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1# rollup changelog
2
3## 2.0.0
4*2020-03-06*
5
6### Breaking Changes
7* Rollup now requires at least Node 10 to run, or a sufficiently modern browser (#3346)
8* The file structure of Rollup's ESM builds has changed:
9 - The main ESM entry point is now at `rollup/dist/es/rollup.js` instead of `rollup/dist/rollup.es.js`
10 - The ESM browser build is at `rollup/dist/es/rollup.browser.js` instead of `rollup/dist/rollup.browser.es.js`
11
12 In general, the ESM builds now follow the same naming scheme as the CJS builds but are located in the `rollup/dist/es` subfolder instead of `rollup/dist` (#3391)
13* The "watch.chokidar" option no longer accepts a `boolean` value but only an object of parameters that is passed to the bundled Chokidar instance. Chokidar installations by the user will be ignored in favour of the bundled instance (#3331)
14* Modules that are completely tree-shaken will no longer be listed as part of any chunks in `generateBundle`
15* The `experimentalOptimizeChunks` and `chunkGroupingSize` options have been removed
16* [acorn](https://github.com/acornjs/acorn) plugins can only be used if they accept a passed-in acorn instance instead of importing it themselves. See https://github.com/acornjs/acorn/pull/870#issuecomment-527339830 for what needs to be done to make plugins compatible that do not support this yet (#3391)
17* Emitted chunks now have the TypeScript type `UInt8Array` instead of `Buffer`. A `Buffer` can still be used, though (#3395)
18* The TypeScript types no longer use ESTree types for AST nodes but a very generic type that does not contain information specific to certain node types (#3395)
19* The signature of the `writeBundle` plugin hook has been changed to match `generateBundle`: The bundle object is now passed as second parameter instead of first and the first parameter is the output options (#3361)
20* The following plugin hooks have been removed:
21 - ongenerate: use `generateBundle` instead
22 - onwrite: use `writeBundle` instead
23 - transformBundle: use `renderChunk` instead
24 - transformChunk: use `renderChunk` instead
25* You can no longer access `this.watcher` on the plugin context.
26* The `transform` hook can no longer return `dependencies`.
27* The `treeshake.pureExternalModules` option will now show a deprecation warning when used: use `treeshake.moduleSideEffects: 'no-external'` instead
28* Using `import.meta.ROLLUP_ASSET_URL_<..>` and `import.meta.ROLLUP_CHUNK_URL_<..>` in code will now show warnings: use `import.meta.ROLLUP_FILE_URL_<..>` instead
29* The `resolveAssetUrl` hook will now show a deprecation warning when used: use `resolveFileUrl` instead
30* The following plugin context functions will show warnings when used:
31 - `this.emitAsset`: use `this.emitFile`
32 - `this.emitChunk`: use `this.emitFile`
33 - `this.getAssetFileName`: use `this.getFileName`
34 - `this.getChunkFileName`: use `this.getFileName`
35 - `this.isExternal`: use `this.resolve`
36 - `this.resolveId`: use `this.resolve`
37* Directly adding properties to the bundle object in the `generateBundle` is deprecated will show a warning (removing properties is allowed, though): Use `this.emitFile`
38* Accessing `chunk.isAsset` on the bundle is deprecated: Use `chunk.type === 'asset'` instead
39* The error code for a missing `name` property when targeting UMD has been changed to `MISSING_NAME_OPTION_FOR_IIFE_EXPORT` to emphasize this is needed for the IIFE part of UMD (#3393)
40
41### Features
42* Rollup now bundles [Chokidar](https://github.com/paulmillr/chokidar) for a better watch experience (#3331)
43* Rollup now bundles [acorn](https://github.com/acornjs/acorn) again, removing its only external dependency (#3391)
44* Do not consider empty imports from side-effect-free modules for chunking and hoist side-effect imports if necessary (#3369)
45* Rollup can now be imported as an ES module in Node via `import {rollup} from 'rollup'`. Note that this relies on Node's experimental [conditional package exports](https://nodejs.org/dist/latest-v13.x/docs/api/esm.html#esm_conditional_exports) feature and is therefore itself experimental (#3391)
46* `systemjs` can be used as format alias for `system` (#3381)
47
48### Bug Fixes
49* Unknown output options now trigger a warning when using the JavaScript API (#3352)
50* Rollup will no longer introduce Node types into TypeScript projects that do not use them (#3395)
51* Generate correct sourcemaps when tree-shaking occurs in a multi-file bundle (#3423)
52
53### Pull Requests
54* [#3331](https://github.com/rollup/rollup/pull/3331): Bundle Chokidar (@lukastaegert)
55* [#3343](https://github.com/rollup/rollup/pull/3343): Remove experimentalOptimizeChunks (@lukastaegert)
56* [#3346](https://github.com/rollup/rollup/pull/3346): Update minimum required Node version to 10 (@lukastaegert)
57* [#3352](https://github.com/rollup/rollup/pull/3352): Remove active deprecations (@lukastaegert)
58* [#3361](https://github.com/rollup/rollup/pull/3361): Change writeBundle signature to match generateBundle (@lukastaegert)
59* [#3369](https://github.com/rollup/rollup/pull/3369): Avoid empty imports from side-effect-free chunks (@lukastaegert)
60* [#3381](https://github.com/rollup/rollup/pull/3381): Rename esm to es everywhere, add systemjs alias (@lukastaegert)
61* [#3391](https://github.com/rollup/rollup/pull/3391): Bundle acorn, allow importing Rollup as Node ES module, update dependencies (@lukastaegert)
62* [#3393](https://github.com/rollup/rollup/pull/3393): Better error code for name-less umd bundle (@rail44)
63* [#3395](https://github.com/rollup/rollup/pull/3395): Remove `@types` dependencies (@lukastaegert)
64* [#3423](https://github.com/rollup/rollup/pull/3423): Update magic-string and fix sourcemaps (@lukastaegert)
65
66## 1.32.1
67*2020-03-06*
68
69### Bug Fixes
70* Handle default export detection for AMD and IIFE externals that do not have a prototype (#3420)
71* Handle missing whitespace when the else branch of an if-statement is simplified (#3421)
72* Mention the importing module when reporting errors for missing named exports (#3401)
73* Add code to warning for missing output.name of IIFE bundles (#3372)
74
75### Pull Requests
76* [#3372](https://github.com/rollup/rollup/pull/3372): Add warning code for missing output.name of IIFE bundle that has export (@rail44)
77* [#3401](https://github.com/rollup/rollup/pull/3401): Missing exports errors now print the importing module (@timiyay)
78* [#3418](https://github.com/rollup/rollup/pull/3418): Structure lifecycle hooks, add links to build time hooks (@lukastaegert)
79* [#3420](https://github.com/rollup/rollup/pull/3420): Update generated code of getInteropBlock() to work with null prototype objects (@jdalton)
80* [#3421](https://github.com/rollup/rollup/pull/3421): Avoid invalid code when "else" branch is simplified (@lukastaegert)
81
82## 1.32.0
83*2020-02-28*
84
85### Features
86* Allow adding plugins on the command line via `--plugin <plugin>` (#3379)
87
88### Pull Requests
89* [#3379](https://github.com/rollup/rollup/pull/3379): introduce CLI --plugin support (@kzc)
90* [#3390](https://github.com/rollup/rollup/pull/3390): fix typo: this.addWatchfile (@mistlog)
91* [#3392](https://github.com/rollup/rollup/pull/3392): Bump codecov from 3.6.1 to 3.6.5
92* [#3404](https://github.com/rollup/rollup/pull/3404): Update resolveFileUrl docs (@jakearchibald)
93
94## 1.31.1
95*2020-02-14*
96
97### Bug Fixes
98* Make sure errored files are always re-evaluated in watch mode to avoid an issue in the typescript plugin (#3388)
99
100### Pull Requests
101* [#3366](https://github.com/rollup/rollup/pull/3366): Correct spelling minifaction to minification (@VictorHom)
102* [#3371](https://github.com/rollup/rollup/pull/3371): Adjust bug template to mention REPL.it (@lukastaegert)
103* [#3388](https://github.com/rollup/rollup/pull/3388): Run transform hooks again in watch mode on files that errored (@lukastaegert)
104
105## 1.31.0
106*2020-01-31*
107
108### Features
109* Always disable tree-shaking for asm.js functions to maintain semantics (#3362)
110
111### Pull Requests
112* [#3362](https://github.com/rollup/rollup/pull/3362): Preserve asm.js code (@lukastaegert)
113
114## 1.30.1
115*2020-01-27*
116
117### Bug Fixes
118* Do not mistreat static entgry points as dynamic ones when chunking (#3357)
119* Resolve a crash when chunking circular dynamic imports (#3357)
120
121### Pull Requests
122* [#3357](https://github.com/rollup/rollup/pull/3357): Resolve issues with circular dynamic entries (@lukastaegert)
123
124## 1.30.0
125*2020-01-27*
126
127### Features
128* Do not split chunks when dynamically imported modules import modules that are already loaded by all dynamic importers (#3354)
129* Add `hoistTransitiveImports` option to disable hoisting imports of static dependencies into entry chunks (#3353)
130
131### Bug Fixes
132* Make sure polyfills are always loaded first when each static entry point contains them as first import (#3354)
133
134### Pull Requests
135* [#3353](https://github.com/rollup/rollup/pull/3353): Add option to avoid hoisting transitive imports (@lukastaegert)
136* [#3354](https://github.com/rollup/rollup/pull/3354): Improve chunking algorithm for dynamic imports (@tjenkinson and @lukastaegert)
137
138## 1.29.1
139*2020-01-21*
140
141### Bug Fixes
142* Avoid crashes for circular reexports when named exports cannot be found (#3350)
143
144### Pull Requests
145* [#3335](https://github.com/rollup/rollup/pull/3335): Fix typo (@robbinworks)
146* [#3342](https://github.com/rollup/rollup/pull/3342): Remove ":" from test file names for Windows and update dependencies (@lukastaegert)
147* [#3350](https://github.com/rollup/rollup/pull/3350): Properly handle circular reexports (@lukastaegert)
148
149## 1.29.0
150*2020-01-08*
151
152### Features
153* Enable top-level await by default (#3089)
154* Add typings for watch events (#3302)
155
156### Bug Fixes
157* Deconflict files that would conflict only on a case-insensitive OS (#3317)
158* Do not fail in certain scenarios where a logical expression inside a sequence expression was being directly included (#3327)
159
160### Pull Requests
161* [#3089](https://github.com/rollup/rollup/pull/3089): Move top-level await out of experimental (@guybedford)
162* [#3302](https://github.com/rollup/rollup/pull/3302): Adds type definitions for RollupWatcher events (@NotWoods)
163* [#3317](https://github.com/rollup/rollup/pull/3317): Fix module id conflict on a case insensitive OS (@yesmeck)
164* [#3327](https://github.com/rollup/rollup/pull/3327): Handle deoptimizations while a node is being included (@lukastaegert)
165
166## 1.28.0
167*2020-01-04*
168
169### Features
170* Allow piping in stdin via the command line interface (#3312, #3290)
171* Allow plugins to mark modules as having syntheticNamedExports for e.g. better CJS interoperability (#3295)
172* Ignore variable reassignments in dead code when tree-shaking to remove more unneeded code (#3212)
173
174### Bug Fixes
175* Properly respect tree-shaken code when generating sourcemaps (#3318)
176
177### Pull Requests
178* [#3212](https://github.com/rollup/rollup/pull/3212): Handle assignments in dead code (@tjenkinson)
179* [#3290](https://github.com/rollup/rollup/pull/3290): Implement stdin input with optional "-" as the file name (@kzc)
180* [#3295](https://github.com/rollup/rollup/pull/3295): Add syntheticNamedExports (@manucorporat)
181* [#3300](https://github.com/rollup/rollup/pull/3300): Add note about setting `types` in tsconfig file (@tjenkinson)
182* [#3303](https://github.com/rollup/rollup/pull/3303): Use ! to assert not-null in TypeScript (@NotWoods)
183* [#3312](https://github.com/rollup/rollup/pull/3312): Implement stdin input (@lukastaegert)
184* [#3318](https://github.com/rollup/rollup/pull/3318): Update magic-string and other dependencies (@lukastaegert)
185
186## 1.27.14
187*2019-12-22*
188
189### Bug Fixes
190* Update references to official rollup plugins in error messages (#3297, #3298)
191
192### Pull Requests
193* [#3286](https://github.com/rollup/rollup/pull/3286): Update link to JavaScript API documentation (@romankaravia)
194* [#3294](https://github.com/rollup/rollup/pull/3294): Update deprecated references to the node-resolve plugin in the documentation (@Vlad-Shcherbina)
195* [#3297](https://github.com/rollup/rollup/pull/3297): Update references to rollup-plugin-json (@cprecioso)
196* [#3298](https://github.com/rollup/rollup/pull/3298): Update references to official rollup plugins (@cprecioso)
197
198## 1.27.13
199*2019-12-14*
200
201### Bug Fixes
202* Do not truncate environment variable values at the first colon when using the `--environment` option (#3283)
203
204### Pull Requests
205* [#3283](https://github.com/rollup/rollup/pull/3283): Allow environment variables to contain colons (@tlaverdure)
206
207## 1.27.12
208*2019-12-13*
209
210### Bug Fixes
211* Prevent invalid AMD or SystemJS code when accessing `import.meta` (#3282)
212
213### Pull Requests
214* [#3282](https://github.com/rollup/rollup/pull/3282): Always make "module" available for SystemJS and AMD formats if `import.meta` is accessed directly (@lukastaegert)
215
216## 1.27.11
217*2019-12-12*
218
219### Bug Fixes
220* Resolve a crash due to an infinite loop (#3280)
221
222### Pull Requests
223* [#3280](https://github.com/rollup/rollup/pull/3280): Prevent infinite deoptimizations (@lukastaegert)
224
225## 1.27.10
226*2019-12-11*
227
228### Bug Fixes
229* Keep track of function return values in more situations (#3278)
230
231### Pull Requests
232* [#3278](https://github.com/rollup/rollup/pull/3278): Avoid some unnecessary value tracking deoptimizations (@lukastaegert)
233
234## 1.27.9
235*2019-12-07*
236
237### Bug Fixes
238* Fix an issue where reexports could be missing when preserving modules (#3273)
239* Allow turning of color output via NO_COLOR or FORCE_COLOR=0 environment variables (#3272)
240
241### Pull Requests
242* [#3272](https://github.com/rollup/rollup/pull/3272): Support either NO_COLOR or FORCE_COLOR=0 to turn off color (@kikonen)
243* [#3273](https://github.com/rollup/rollup/pull/3273): Make sure that indirectly reexported modules also become chunk dependencies when preserving modules(@lukastaegert)
244
245## 1.27.8
246*2019-12-02*
247
248### Bug Fixes
249* Deoptimize objects when a method is called on them to make sure modifications via "this" are observed (#3266)
250
251### Pull Requests
252* [#3266](https://github.com/rollup/rollup/pull/3266): Workaround for various object literal mutation bugs (@kzc)
253
254## 1.27.7
255*2019-12-01*
256
257### Bug Fixes
258* Fix a scenario where a reassignments to computed properties were not tracked (#3267)
259
260### Pull Requests
261* [#3267](https://github.com/rollup/rollup/pull/3267): Fix incomplete computed property deoptimization (@lukastaegert)
262
263## 1.27.6
264*2019-11-30*
265
266### Bug Fixes
267* Use "auto" export mode by default for all modules when preserving modules (#3265)
268* Observe "output.exports" when preserving modules and warn for mixed exports if necessary (#3265)
269
270### Pull Requests
271* [#3265](https://github.com/rollup/rollup/pull/3265): Use export mode "auto" by default when preserving modules (@lukastaegert)
272
273## 1.27.5
274*2019-11-25*
275
276### Bug Fixes
277* Make sure namespaces for inlined dynamic imports are treated as variable accesses when deconflicting (#3256)
278
279### Pull Requests
280* [#3256](https://github.com/rollup/rollup/pull/3256): Avoid name conflicts when inlining dynamic imports nested in functions (@lukastaegert)
281* [#3257](https://github.com/rollup/rollup/pull/3257): Update dependencies (@lukastaegert)
282
283## 1.27.4
284*2019-11-22*
285
286### Bug Fixes
287* Aggregate circular dependency warnings in the CLI (#3249)
288* Do not defer non-aggregated handlers in the CLI (#3249)
289
290### Pull Requests
291* [#3249](https://github.com/rollup/rollup/pull/3249): Fix broken Windows CLI tests (@lukastaegert)
292* [#3251](https://github.com/rollup/rollup/pull/3251): Add installation as a separate header (@ashrith-kulai)
293
294## 1.27.3
295*2019-11-20*
296
297### Bug Fixes
298* Provide better warning when empty chunks are created in a code-splitting scenario (#3244)
299
300### Pull Requests
301* [#3244](https://github.com/rollup/rollup/pull/3244): Clearer empty chunk warning (@tjenkinson)
302
303## 1.27.2
304*2019-11-18*
305
306### Bug Fixes
307* Fix an issue where live bindings were not working correctly when using `+=` in SystemJS (#3242)
308
309### Pull Requests
310* [#3242](https://github.com/rollup/rollup/pull/3242): Export updated assignments when using shorthand update assignment expressions in SystemJS (@lukastaegert)
311
312## 1.27.1
313*2019-11-18*
314
315### Bug Fixes
316* Fix an issue where code after a switch-statement with removed cases was erroneously not included (#3241)
317
318### Pull Requests
319* [#3237](https://github.com/rollup/rollup/pull/3237): make `acornOptions` optional in `parse()` in docs (@tjenkinson)
320* [#3240](https://github.com/rollup/rollup/pull/3240): Update dependencies and fix vulnerability (@lukastaegert)
321* [#3241](https://github.com/rollup/rollup/pull/3241): Do not truncate after switch-statement with removed case (@lukastaegert)
322
323## 1.27.0
324*2019-11-12*
325
326### Features
327* Add support for output-specific plugins (#3218)
328* Reenable parallel output processing when using the CLI (#3218)
329* Warn if files are emitted that would overwrite previously emitted files (#3218)
330
331### Bug Fixes
332* Do not overwrite files emitted in other builds if outputs are generated in parallel (#3218)
333
334### Pull Requests
335* [#3218](https://github.com/rollup/rollup/pull/3218): Per output plugins (@lukastaegert)
336
337## 1.26.5
338*2019-11-11*
339
340### Bug Fixes
341* Fix a regression where it was no longer to pass a certain option format to generate (#3223)
342
343### Pull Requests
344* [#3223](https://github.com/rollup/rollup/pull/3223): Allow passing input options to output (@lukastaegert)
345
346## 1.26.4
347*2019-11-09*
348
349### Bug Fixes
350* Keep watching known files after a plugin error during the initial build (#3219)
351
352### Pull Requests
353* [#3216](https://github.com/rollup/rollup/pull/3216): Fix small typo (@kaisermann)
354* [#3217](https://github.com/rollup/rollup/pull/3217): Update dependencies and fix security vulnerability (@lukastaegert)
355* [#3219](https://github.com/rollup/rollup/pull/3219): Also recover from plugin errors during the initial build (@lukastaegert)
356
357## 1.26.3
358*2019-11-02*
359
360### Bug Fixes
361* Work around an incompatibility with rollup-plugin-dts (#3211)
362
363### Pull Requests
364* [#3211](https://github.com/rollup/rollup/pull/3211): Do no fail if the source attribute is `undefined` in an unused named export (@lukastaegert)
365
366## 1.26.2
367*2019-10-31*
368
369### Bug Fixes
370* Do not create invalid code when using `treeshake: false` and star re-exports (#3209)
371
372### Pull Requests
373* [#3209](https://github.com/rollup/rollup/pull/3209): Also remove export-all declarations when not tree-shaking (@lukastaegert)
374
375## 1.26.1
376*2019-10-31*
377
378### Bug Fixes
379* Prevent an issue where outputs would overwrite files emitted by other outputs (#3201)
380* Do not throw an error if the config file does not have a .js extension (#3204)
381
382### Pull Requests
383* [#3201](https://github.com/rollup/rollup/pull/3201): Make the CLI run generate/output in serial (@marijnh)
384* [#3204](https://github.com/rollup/rollup/pull/3204): support all config file extensions (.js,.mjs,...) (@arlac77)
385
386## 1.26.0
387*2019-10-27*
388
389### Features
390* Only warn when no output is provided for an IIFE bundle but still produce valid code (#3181)
391* Support reexporting namespaces as a binding (#3193)
392* Switch from hash.js to crypto for hashing in the Node build for better performance and support for very large assets (#3194)
393
394### Bug Fixes
395* Correctly handle chunks reexporting the same namespace as two different bindings (#3193)
396
397### Pull Requests
398* [#3181](https://github.com/rollup/rollup/pull/3181): Remove the need to provide an output name for IIFE bundles (@bterrier)
399* [#3193](https://github.com/rollup/rollup/pull/3193): Add support for "export * as name from …" (@lukastaegert)
400* [#3194](https://github.com/rollup/rollup/pull/3194): Add support for large assets (> 100 MB) (@SebastianNiemann)
401
402## 1.25.2
403*2019-10-23*
404
405### Bug Fixes
406* Improve performance of bundled UMD code by adding additional parentheses to enforce eager parsing (#3183)
407* Improve types to tolerate passing a Rollup config with multiple outputs to `rollup.rollup` (#3184)
408
409### Pull Requests
410* [#3183](https://github.com/rollup/rollup/pull/3183): Add parentheses to factory function of UMD bundles (@ajihyf)
411* [#3184](https://github.com/rollup/rollup/pull/3184): RollupOptions accept output as array (@imcotton)
412
413## 1.25.1
414*2019-10-20*
415
416### Bug Fixes
417* Handle a situation where code was not included after a switch statement (#3178)
418* Handle a situation where code was not included after a do-while loop (#3180)
419* Do not fail if different outputs emit the same file (#3175)
420* Give access to the original acorn error for parse errors (#3176)
421
422### Pull Requests
423* [#3175](https://github.com/rollup/rollup/pull/3175): Disable errors for duplicate emitted file names (@marijnh)
424* [#3176](https://github.com/rollup/rollup/pull/3176): Add original parser error to rollup error; Update tests (@gribnoysup)
425* [#3178](https://github.com/rollup/rollup/pull/3178): Fix switch case not being included correctly (@lukastaegert)
426* [#3179](https://github.com/rollup/rollup/pull/3179): Update dependencies (@lukastaegert)
427* [#3180](https://github.com/rollup/rollup/pull/3180): Handle conditional breaks in do-while loops with unconditional return (@lukastaegert)
428
429## 1.25.0
430*2019-10-18*
431
432### Features
433* Remove try-catch if there is no side-effect in the try-block (#3166)
434* Omit side-effect-free trailing cases in switch-statements (#3166)
435* Remove unused labels (#3170)
436
437### Bug Fixes
438* Do not remove code after labeled statements that contain a throw or return if the label is used (#3170)
439* Prevent invalid code when expressions are simplified that do not follow a white-space character (#3173)
440* Do not remove continue statements inside switch statements (#3166)
441* Prevent trailing empty lines when tree-shaking inside switch statements (#3166)
442
443### Pull Requests
444* [#3166](https://github.com/rollup/rollup/pull/3166): Better try statement tree shaking (@lukastaegert)
445* [#3170](https://github.com/rollup/rollup/pull/3170): Handle optional control flow in labeled statements, remove unused labels (@lukastaegert)
446* [#3173](https://github.com/rollup/rollup/pull/3173): Add missing spaces in certain statements and expressions to avoid invalid code (@lukastaegert)
447
448## 1.24.0
449*2019-10-15*
450
451### Features
452* Respect `break`, `continue`, `return` and `throw` when tree-shaking to detect dead code (#3153)
453* Do treat treat hoisted function declarations as "unknown" when checking for call side-effects (#3153)
454
455### Bug Fixes
456* Make sure that unknown `import.meta` properties produce valid code in SystemJS (#3152)
457* Make sure `treeshake.annotations: false` is respected for class instantiation (#3153)
458* Check property access side-effects for class instantiation (#3153)
459* Do not suppress break statements inside labeled statements (#3153)
460
461### Pull Requests
462* [#3152](https://github.com/rollup/rollup/pull/3152): Allow import.meta.* for systemjs format (@dmail)
463* [#3153](https://github.com/rollup/rollup/pull/3153): Get rid of immutable.js and implement tree-shaking for broken control flow (@lukastaegert)
464
465## 1.23.1
466*2019-10-05*
467
468### Bug Fixes
469* Fix a regression where the node types had a specific minimal version (#3143)
470
471### Pull Requests
472* [#3143](https://github.com/rollup/rollup/pull/3143): Ensure that types packages have star version ranges (@lukastaegert)
473
474## 1.23.0
475*2019-10-03*
476
477### Features
478* Add placeholders for extensions when preserving modules (#3116)
479
480### Pull Requests
481* [#3116](https://github.com/rollup/rollup/pull/3116): Include extensions in preserveModules output filenames for scriptified assets (@Andarist)
482* [#3142](https://github.com/rollup/rollup/pull/3142): Fix typo (@tu4mo)
483
484## 1.22.0
485*2019-09-29*
486
487### Features
488* Add a new "hidden" sourcemap type that generates the map files but omits the sourcemap comment (#3120)
489* Generate more efficient code when using `namespaceToStringTag: true` (#3135)
490* Make sure namespace objects do not have a prototype (#3136)
491
492### Bug Fixes
493* Do not ignore side-effectful iterators by always preserving for..of loops for now (#3132)
494* Make sure `--context` is observed as a CLI option (#3134)
495* Do not require specific versions for @types dependencies (#3131)
496
497### Pull Requests
498* [#3120](https://github.com/rollup/rollup/pull/3120): Generate sourcemaps but omit the comment (@rohitmohan96)
499* [#3131](https://github.com/rollup/rollup/pull/3131): Use asterisk for @types/* dependencies (@frenzzy)
500* [#3132](https://github.com/rollup/rollup/pull/3132): Preserve empty for...of loops (@imatlopez)
501* [#3133](https://github.com/rollup/rollup/pull/3133): Update dependencies (@lukastaegert)
502* [#3134](https://github.com/rollup/rollup/pull/3134): Wire up --context CLI flag (@tchetwin)
503* [#3135](https://github.com/rollup/rollup/pull/3135): Remove Symbol polyfill in module namespaces (@mkubilayk)
504* [#3136](https://github.com/rollup/rollup/pull/3136): Set null prototype on namespace objects (@rpamely)
505
506## 1.21.4
507*2019-09-16*
508
509### Bug Fixes
510* Recognize common browser globals (#3117)
511* Do not treat "typeof <global>" as a side-effect (#3117)
512
513### Pull Requests
514* [#3117](https://github.com/rollup/rollup/pull/3117): Add browser globals to known globals and prevent "typeof" side-effects (@lukastaegert)
515
516## 1.21.3
517*2019-09-14*
518
519### Bug Fixes
520* Fix a regression where modifying a watched file did not trigger a rebuild (#3112)
521
522### Pull Requests
523* [#3112](https://github.com/rollup/rollup/pull/3112): Fix .addWatchFile() dependencies failing to invalidate in watch mode (@tivac)
524
525## 1.21.2
526*2019-09-09*
527
528### Bug Fixes
529* Fix wrong deprecation message to direct to `this.emitFile` instead of `this.emitAsset`
530
531## 1.21.1
532*2019-09-09*
533
534### Bug Fixes
535* Allow legacy plugins to still add assets directly to the bundle object (#3105)
536
537### Pull Requests
538* [#3105](https://github.com/rollup/rollup/pull/3105): Allow legacy plugins to still add assets directly to the bundle object (@lukastaegert)
539
540## 1.21.0
541*2019-09-08*
542
543### Features
544* Respect `output.entryFileNames` when preserving modules (#3088)
545* Make accessing unknown globals a side-effect unless this is deactivated via `treeshake.unknownGlobalSideEffects` (#3068)
546* Respect global objects when checking for pure global functions (#3068)
547* Introduce a `type` to more easily distinguish chunks and assets in the output bundle (#3080)
548
549### Bug Fixes
550* Recover in watch mode when the initial build fails (#3081)
551* Make sure `output.strict` is respected for SystemJS output (#3101)
552
553### Pull Requests
554* [#3068](https://github.com/rollup/rollup/pull/3068): Make accessing unknown globals a side-effect (@lukastaegert)
555* [#3080](https://github.com/rollup/rollup/pull/3080): OutputBundle Tagged union with 'type = chunk|asset' (@askbeka)
556* [#3081](https://github.com/rollup/rollup/pull/3081): Watch files onbuild, even if build fails (@mhkeller)
557* [#3088](https://github.com/rollup/rollup/pull/3088): Add support for entryFileNames pattern used in combination with preserveModules option (@Andarist)
558* [#3101](https://github.com/rollup/rollup/pull/3101): Remove 'use strict'; from systemjs when strict=false (@askbeka)
559
560## 1.20.3
561*2019-08-28*
562
563### Bug Fixes
564* Make sure file hashes change when a change of the naming pattern leads to a file name change of a dependency (#3083)
565* Fix several issues where reexporting an external "default" export could lead to invalid or incorrect code (#3084)
566
567### Pull Requests
568* [#3078](https://github.com/rollup/rollup/pull/3078): Add github actions workflow config for windows (@shellscape)
569* [#3083](https://github.com/rollup/rollup/pull/3083): Properly reflect dependency file names in hash (@lukastaegert)
570* [#3084](https://github.com/rollup/rollup/pull/3084): Fix "default" reexport issues in non ESM/System formats (@lukastaegert)
571
572## 1.20.2
573*2019-08-25*
574
575### Bug Fixes
576* Avoid an issue where circular namespace reexports would crash Rollup (#3074)
577
578### Pull Requests
579* [#3077](https://github.com/rollup/rollup/pull/3077): Handle namespaces that reexport themselves (@lukastaegert)
580
581## 1.20.1
582*2019-08-22*
583
584### Bug Fixes
585* Fix an issue where variable names inside dynamic import expressions were not rendered correctly (#3073)
586* Fix type definition to allow a single watcher config as well as an array (#3074)
587
588### Pull Requests
589* [#3073](https://github.com/rollup/rollup/pull/3073): Fix wrong variable name in import expression (@lukastaegert)
590* [#3074](https://github.com/rollup/rollup/pull/3074): Fixes type definition on watch and Watcher constructor (@MicahZoltu)
591
592## 1.20.0
593*2019-08-21*
594
595### Features
596* Add augmentChunkHash plugin hook to be able to reflect changes in renderChunk in the chunk hash (#2921)
597
598### Bug Fixes
599* Do not mutate the acorn options object (#3051)
600* Make sure the order of emitted chunks always reflects the order in which they were emitted (#3055)
601* Do not hang when there are strings containing comment-like syntax in some scenarios (#3069)
602
603### Pull Requests
604* [#2921](https://github.com/rollup/rollup/pull/2921): Add augmentChunkHash plugin hook (@isidrok)
605* [#2995](https://github.com/rollup/rollup/pull/2995): Add info on installing locally to docs (@mesqueeb)
606* [#3037](https://github.com/rollup/rollup/pull/3037): Refresh pull request labels (@shellscape)
607* [#3048](https://github.com/rollup/rollup/pull/3048): Document ROLLUP_WATCH environment variable (@shellscape)
608* [#3051](https://github.com/rollup/rollup/pull/3051): Avoid changes to the original options (.acorn) object (@LongTengDao)
609* [#3052](https://github.com/rollup/rollup/pull/3052): Minor refactoring: Remove one try-catch (@KSXGitHub)
610* [#3053](https://github.com/rollup/rollup/pull/3053): Refactor to use async-await in more places (@KSXGitHub)
611* [#3055](https://github.com/rollup/rollup/pull/3055): Provide consistent chunking via a consistent order of entry modules when emitting chunks (@lukastaegert)
612* [#3058](https://github.com/rollup/rollup/pull/3058): Remove acorn-bigint and acorn-dynamic-import from bundle (@LongTengDao)
613* [#3061](https://github.com/rollup/rollup/pull/3061): Update to acorn@7 (@lukastaegert)
614* [#3063](https://github.com/rollup/rollup/pull/3063): Auto-generate license file (@lukastaegert)
615* [#3069](https://github.com/rollup/rollup/pull/3069): Prevent infinite loop when scanning for line-breaks and there are comment-like strings (@lukastaegert)
616
617## 1.19.4
618*2019-08-07*
619
620### Bug Fixes
621* Prevent invalid code when exporting an external namespace (#3034)
622* Prevent invalid or non-equivalent code when simplifying expressions in return and throw statements (#3035)
623
624### Pull Requests
625* [#3034](https://github.com/rollup/rollup/pull/3034): Avoid generating .* as export (@LongTengDao)
626* [#3035](https://github.com/rollup/rollup/pull/3035): Prevent ASI errors for conditional expressions (@lukastaegert)
627* [#3036](https://github.com/rollup/rollup/pull/3036): Fix documents to use https, not http (@giraffate)
628
629## 1.19.3
630*2019-08-06*
631
632### Bug Fixes
633* Fix wrong URLs in error messages (#3033)
634
635### Pull Requests
636* [#3033](https://github.com/rollup/rollup/pull/3033): Fix wrong URLs in error messages (@giraffate)
637
638## 1.19.2
639*2019-08-05*
640
641### Bug Fixes
642* Add bin file to package
643
644## 1.19.1
645*2019-08-05*
646
647### Bug Fixes
648* Remove wrong extension in package.json file (#3031)
649
650### Pull Requests
651* [#3031](https://github.com/rollup/rollup/pull/3031): Fix wrong extension (@lukastaegert)
652
653## 1.19.0
654*2019-08-05*
655
656### Features
657* Implement a new unified file emission API for assets and chunks with support for explicit file names (#2999)
658* Use the id of the last module in a chunk as base for the chunk name if no better name is available (#3025)
659* Use the id of the last module in a chunk as base for the variable name of a chunk in some formats if no better name is available (#2999)
660
661### Bug Fixes
662* Do not produce invalid variable names if an empty name is chosen for a virtual module (#3026)
663* Fix an issue where a module variable name would conflict with a local variable name in some formats (#3020)
664
665### Pull Requests
666* [#2999](https://github.com/rollup/rollup/pull/2999): Unified file emission api (@lukastaegert)
667* [#3020](https://github.com/rollup/rollup/pull/3020): Switch to a code-splitting build and update dependencies (@lukastaegert)
668* [#3025](https://github.com/rollup/rollup/pull/3025): Use id of last module in chunk as name base for auto-generated chunks (@lukastaegert)
669* [#3026](https://github.com/rollup/rollup/pull/3026): Avoid variable from empty module name be empty (@LongTengDao)
670
671## 1.18.0
672*2019-08-01*
673
674### Features
675* Add `externalLiveBindings: false` option to optimize code when live bindings are not needed (#3010)
676
677### Pull Requests
678* [#2997](https://github.com/rollup/rollup/pull/2997): Integrate coverage into CI setup (@lukastaegert)
679* [#2998](https://github.com/rollup/rollup/pull/2998): Update readme badges (@lukastaegert)
680* [#3010](https://github.com/rollup/rollup/pull/3010): Add option to prevent code for external live bindings (@lukastaegert)
681
682## 1.17.0
683*2019-07-15*
684
685### Features
686* Allow plugins to access current combined sourcemap in transform hook for coverage instrumentation (#2993)
687
688### Pull Requests
689* [#2987](https://github.com/rollup/rollup/pull/2987): Fix code fences for link (@johanholmerin)
690* [#2989](https://github.com/rollup/rollup/pull/2989): Bump lodash from 4.17.11 to 4.17.14 (@dependabot)
691* [#2993](https://github.com/rollup/rollup/pull/2993): Add getCombinedSourceMap in transform plugin context (@billowz)
692
693## 1.16.7
694*2019-07-09*
695
696### Bug Fixes
697* Fix an issue where exported import.meta properties would lead to invalid code (#2986)
698
699### Pull Requests
700* [#2985](https://github.com/rollup/rollup/pull/2985): Improve sourcemap types (@jridgewell)
701* [#2986](https://github.com/rollup/rollup/pull/2986): Only overwrite content when resolving import.meta properties (@lukastaegert)
702
703## 1.16.6
704*2019-07-04*
705
706### Bug Fixes
707* Do not pass undefined to resolveDynamicImport for unresolvable template literals (#2984)
708
709### Pull Requests
710* [#2984](https://github.com/rollup/rollup/pull/2984): Always forward AST nodes for unresolvable dynamic imports (@lukastaegert)
711
712## 1.16.5
713*2019-07-04*
714
715### Bug Fixes
716* onwarn should still be called when --silent is used (#2982)
717* Properly clean up watchers for files that are deleted between builds (#2982)
718
719### Pull Requests
720* [#2981](https://github.com/rollup/rollup/pull/2981): Do not skip onwarn handler when --silent is used (@lukastaegert)
721* [#2982](https://github.com/rollup/rollup/pull/2982): Make tests run on Node 12, fix watcher cleanup issue (@lukastaegert)
722
723## 1.16.4
724*2019-07-02*
725
726### Bug Fixes
727* Do not show a TypeScript error when providing a location as number to this.warn and this.error (#2974)
728* Use the correct TypeScript type for Sourcemap.version (#2976)
729
730### Pull Requests
731* [#2965](https://github.com/rollup/rollup/pull/2965): Use async readFile in getRollupDefaultPlugin (@kaksmet)
732* [#2974](https://github.com/rollup/rollup/pull/2974): Align TS types, docs and implementation for this.warn and this.error (@lukastaegert)
733* [#2976](https://github.com/rollup/rollup/pull/2976): Fix sourcemap type and update dependencies (@lukastaegert)
734
735## 1.16.3
736*2019-06-29*
737
738### Bug Fixes
739* Prevent name conflicts with unused function parameters (#2972)
740
741### Pull Requests
742* [#2972](https://github.com/rollup/rollup/pull/2972): Deconflict unused parameters (@lukastaegert)
743
744## 1.16.2
745*2019-06-22*
746
747### Bug Fixes
748* Properly wrap dynamic imports in Promises that can be caught when generating CJS output (#2958)
749
750### Pull Requests
751* [#2958](https://github.com/rollup/rollup/pull/2958): Make sure errors from dynamic imports can be caught (@lukastaegert)
752
753## 1.16.1
754*2019-06-21*
755
756### Pull Requests
757* [#2956](https://github.com/rollup/rollup/pull/2956): Add missing CLI docs for strictDeprecations (@lukastaegert)
758
759## 1.16.0
760*2019-06-21*
761
762### Features
763* Add strictDeprecations option to throw when currently or upcoming deprecated features are used (#2945)
764* Keep annotations and comments when simplifying logical and conditional expressions (#2955)
765
766### Bug Fixes
767* Generate proper namespace objects when dynamically importing external dependencies for AMD or CJS formats (#2954)
768* Fix dynamically imported variables not being resolved correctly when importing from an entry chunk with only a default export (#2954)
769* Do not reexport default when reexporting a namespace (#2954)
770
771### Pull Requests
772* [#2945](https://github.com/rollup/rollup/pull/2945): Add option to handle use of features marked for deprecation as errors (@lukastaegert)
773* [#2954](https://github.com/rollup/rollup/pull/2954): Improve dynamic import interop (@lukastaegert)
774* [#2955](https://github.com/rollup/rollup/pull/2955): Keep annotations and comments when simplifying logical and conditional expressions (@lukastaegert)
775
776## 1.15.6
777*2019-06-16*
778
779### Bug Fixes
780* No longer use an alternate screen in watch mode to allow scrolling (#2942)
781* Prioritize non-external imports over external ones when resolving conflicting namespace re-exports (#2893)
782
783### Pull Requests
784* [#2893](https://github.com/rollup/rollup/pull/2893): Improve handling of conflicting namespace exports (@aleclarson)
785* [#2942](https://github.com/rollup/rollup/pull/2942): Get rid of alternate screen and simplify screen clearing (@lukastaegert)
786
787## 1.15.5
788*2019-06-14*
789
790### Bug Fixes
791* Do not include any comments for completely tree-shaken files so that `renderedLength === 0` is a reliable check (#2940)
792* Do not cause type errors when returning `null` from `resolveId` (#2941)
793
794### Pull Requests
795* [#2940](https://github.com/rollup/rollup/pull/2940): Completely omit files that do not have any included statements (@lukastaegert)
796* [#2941](https://github.com/rollup/rollup/pull/2941): Explicitly allow null as return value for various hooks (@lukastaegert)
797
798## 1.15.4
799*2019-06-14*
800
801### Bug Fixes
802* Improve how asset and chunk URLs are resolved for UMD, IIFE and CJS output (#2937)
803
804### Pull Requests
805* [#2937](https://github.com/rollup/rollup/pull/2937): Fix URL resolution to work when the current script contains query parameters (@lukastaegert)
806
807## 1.15.3
808*2019-06-13*
809
810### Bug Fixes
811* Always reemit assets and chunks from cached transform hooks (#2936)
812
813### Pull Requests
814* [#2936](https://github.com/rollup/rollup/pull/2936): Fix repeated re-emission of files emitted from a transform hook (@lukastaegert)
815
816## 1.15.2
817*2019-06-13*
818
819### Bug Fixes
820* Make sure chunks emitted from transform hooks are also emitted for incremental builds in watch mode (#2933)
821
822### Pull Requests
823* [#2933](https://github.com/rollup/rollup/pull/2933): Reemit chunks emitted from transform hooks (@lukastaegert)
824
825## 1.15.1
826*2019-06-11*
827
828### Bug Fixes
829* Do not fail when reexporting variables in dynamic entry points from other chunks (#2928)
830
831### Pull Requests
832* [#2928](https://github.com/rollup/rollup/pull/2928): Handle reexports from dynamic entries across chunk (@lukastaegert)
833
834## 1.15.0
835*2019-06-11*
836
837### Features
838* Tone down try-catch deoptimization while maintaining polyfill support (#2918)
839
840### Bug Fixes
841* Handle feature detection with "typeof" for regular expressios (#2916)
842* Deoptimize `'' + variable'` type coercion as expression statement for feature detection (#2917)
843* Always observe argument side-effects when tree-shaking (#2924)
844
845### Pull Requests
846* [#2916](https://github.com/rollup/rollup/pull/2916): Deoptimize typeof for regular expression literals to better support es6-shim (@lukastaegert)
847* [#2917](https://github.com/rollup/rollup/pull/2917): Support implicit type coercion errors in es5-shim (@lukastaegert)
848* [#2918](https://github.com/rollup/rollup/pull/2918): Deoptimize try-catch less radically (@lukastaegert)
849* [#2924](https://github.com/rollup/rollup/pull/2924): Do not tree-shake arguments with side-effects (@lukastaegert)
850
851## 1.14.6
852*2019-06-10*
853
854### Bug Fixes
855* Fix an issue where call arguments were not included in try statements (#2914)
856
857### Pull Requests
858* [#2914](https://github.com/rollup/rollup/pull/2914): Properly include try statements for each pass when deoptimization is deactivated (@lukastaegert)
859
860## 1.14.5
861*2019-06-09*
862
863### Bug Fixes
864* Keep external ids unmodified when using the object form of resolveId (#2907)
865* Cache dynamic import resolutions when using Rollup cache (#2908)
866* Keep all necessary parentheses when tree-shaking call arguments (#2911)
867
868### Pull Requests
869* [#2906](https://github.com/rollup/rollup/pull/2906): Update dependencies (@lukastaegert)
870* [#2907](https://github.com/rollup/rollup/pull/2907): Do not renormalize external ids when using the object form (@lukastaegert)
871* [#2908](https://github.com/rollup/rollup/pull/2908): Cache dynamic ids if possible (@lukastaegert)
872* [#2911](https://github.com/rollup/rollup/pull/2911): Fix treeshaken parameters around parentheses (@manucorporat)
873
874## 1.14.4
875*2019-06-07*
876
877### Bug Fixes
878* Do not omit external re-exports for `moduleSideEffects: false` (#2905)
879
880### Pull Requests
881* [#2905](https://github.com/rollup/rollup/pull/2905): Make sure external re-exports are included for moduleSideEffects: false (@lukastaegert)
882
883## 1.14.3
884*2019-06-06*
885
886### Bug Fixes
887* Generate correct external imports when importing from a directory that would be above the root of the current working directory (#2902)
888
889### Pull Requests
890* [#2902](https://github.com/rollup/rollup/pull/2902): Use browser relative path algorithm for chunks (@lukastaegert)
891
892## 1.14.2
893*2019-06-05*
894
895### Bug Fixes
896* Prevent unnecessary inclusion of external namespace import in certain situations (#2900)
897
898### Pull Requests
899* [#2900](https://github.com/rollup/rollup/pull/2900): Handle early bind for member expressions (@lukastaegert)
900
901## 1.14.1
902*2019-06-05*
903
904### Bug Fixes
905* Fix an issue where try-statements were not included properly when a variable declared inside the statement was accessed outside it (#2898)
906* Fix an issue where `await` expressions were not included properly (#2899)
907
908### Pull Requests
909* [#2898](https://github.com/rollup/rollup/pull/2898): Properly include try-catch-statements even if they have already been included in some way (@lukastaegert)
910* [#2899](https://github.com/rollup/rollup/pull/2899): Fix unintended early return in await inclusion handling (@lukastaegert)
911
912## 1.14.0
913*2019-06-05*
914
915### Features
916* Deoptimize code inside and called from try-statements for feature detection (#2892)
917* Tree-shake unused call arguments (#2892)
918
919### Pull Requests
920* [#2892](https://github.com/rollup/rollup/pull/2892): Implement try-statement-deoptimization for feature detection, tree-shake unused arguments (@lukastaegert)
921
922
923## 1.13.1
924*2019-06-01*
925
926### Bug Fixes
927* Avoid conflicts between top-level module, require etc. and CommonJS runtimes (#2889)
928
929### Pull Requests
930* [#2888](https://github.com/rollup/rollup/pull/2888): Enable full TypeScript strict mode (@lukastaegert)
931* [#2889](https://github.com/rollup/rollup/pull/2889): Protect all module globals for CJS output from being redefined (@lukastaegert)
932
933## 1.13.0
934*2019-05-31*
935
936### Features
937* Omit `exports` and `module` from SystemJS wrapper if possible (#2880)
938* Try to use the first letters of names when mangling exports (#2885)
939
940### Bug Fixes
941* Avoid conflicts with local variables when using format specific globals to render dynamic imports and file URLs (#2880)
942* Do not produce undefined reexports when reexporting from entry points (#2885)
943
944### Pull Requests
945* [#2880](https://github.com/rollup/rollup/pull/2880): Deconflict global variables used inside format-specific code (@lukastaegert)
946* [#2885](https://github.com/rollup/rollup/pull/2885): Do not produce undefined reexports when reexporting from entry points and refactor chunk linking (@lukastaegert)
947
948## 1.12.5
949*2019-05-30*
950
951### Pull Requests
952* [#2884](https://github.com/rollup/rollup/pull/2884): Update pluginutils for new micormatch and reduced bundle size (@lukastaegert)
953
954## 1.12.4
955*2019-05-27*
956
957### Bug Fixes
958* Show correct error stack trace for errors throw in "load" hooks (#2871)
959
960### Pull Requests
961* [#2875](https://github.com/rollup/rollup/pull/2875): Mention subfolders in docs (@lukastaegert)
962* [#2871](https://github.com/rollup/rollup/pull/2871): Reserve error stack information (@LongTengDao)
963
964## 1.12.3
965*2019-05-19*
966
967### Bug Fixes
968* Prevent duplicate imports when exports are reexported as default exports (#2866)
969
970### Pull Requests
971* [#2755](https://github.com/rollup/rollup/pull/2755): Enable TypeScript strictNullChecks (@edsrzf)
972* [#2866](https://github.com/rollup/rollup/pull/2866): Properly deduplicate reexported default exports (@lukastaegert)
973
974## 1.12.2
975*2019-05-17*
976
977### Bug Fixes
978* Do not fail when using clearScreen:false in watchMode (#2858)
979* Properly resolve star reexports when preserving modules (#2860)
980
981### Pull Requests
982* [#2858](https://github.com/rollup/rollup/pull/2858): Declare processConfigsErr before use (@humphd)
983* [#2860](https://github.com/rollup/rollup/pull/2860): Keep nested exports with preserveModules (@TomCaserta)
984* [#2864](https://github.com/rollup/rollup/pull/2864): Cache transitive reexport detection (@lukastaegert)
985
986## 1.12.1
987*2019-05-16*
988
989### Bug Fixes
990* Extend file name sanitation to also replace "?" and "*" e.g. when preserving modules with the updated commonjs plugin (#2860)
991* Do not ignore module transformer that return an empty string (#2861)
992
993### Pull Requests
994* [#2860](https://github.com/rollup/rollup/pull/2860): Update to latest plugins and extend file name sanitation (@lukastaegert)
995* [#2861](https://github.com/rollup/rollup/pull/2861): Allow transformers to return an empty string (@lukastaegert)
996
997## 1.12.0
998*2019-05-15*
999
1000### Features
1001* Add `treeshake.moduleSideEffects` option to allow removing empty imports without a side-effect check (#2844)
1002* Extend plugin API to allow marking modules as side-effect-free (#2844)
1003* Extend `this.resolve` plugin context function with an option to skip the `resolveId` hook of the calling plugin (#2844)
1004* Add `isEntry` flag to `this.getModuleInfo` plugin context function (#2844)
1005* Distribute Rollup as optimized ES2015 code (#2851)
1006
1007### Pull Requests
1008* [#2844](https://github.com/rollup/rollup/pull/2844): Add options and hooks to control module side effects (@lukastaegert)
1009* [#2851](https://github.com/rollup/rollup/pull/2851): Switch to ES2015 output (@lukastaegert)
1010
1011## 1.11.3
1012*2019-05-05*
1013
1014### Bug Fixes
1015* Quote es3 keywords in namespace objects (#2825)
1016
1017### Pull Requests
1018* [#2825](https://github.com/rollup/rollup/pull/2825): Add es3 support for namespace object import (@sormy)
1019
1020## 1.11.2
1021*2019-05-04*
1022
1023### Bug Fixes
1024* Prevent a crash when handling circular namespace exports (#2836)
1025
1026### Pull Requests
1027* [#2836](https://github.com/rollup/rollup/pull/2836): Make sure circular `export * from X` does not stack overflow (@Swatinem)
1028
1029## 1.11.1
1030*2019-05-04*
1031
1032### Bug Fixes
1033* Fix an issue where rendered exports were reported as "removed" in the bundle information (#2835)
1034
1035### Pull Requests
1036* [#2835](https://github.com/rollup/rollup/pull/2835): Fix `removedExports` to correctly track the exported item (@Swatinem)
1037
1038## 1.11.0
1039*2019-05-03*
1040
1041### Features
1042* Add `emitChunk` plugin context function to emit additional entry chunks that can be referenced from the code (#2809)
1043* Allow `manualChunks` to be a function (#2831)
1044* Omit `.js` extensions in AMD imports to make sure an AMD `baseUrl` would work (#2809)
1045* Automatically use the name of the imported module as a base for dynamically imported chunks (#2809)
1046* Add `resolveFileUrl` plugin hook to replace `resolveAssetUrl` and handle emitted chunks as well (#2809)
1047* Add `resolve` plugin hook to replace `resolveId` and `isExternal` that returns an object (#2829)
1048* Allow `resolveDynamicImport` to return an `{id, external}` object to also resolve unresolvable dynamic imports to a module (#2829)
1049
1050### Bug Fixes
1051* Do not create invalid code if a dynamic import contains nothing but reexports (#2809)
1052* Do not fail if modules that define a manual chunk depend on each other (#2809)
1053* Do not fail if a module that defines a manual chunk is the dependency of a module defining a different manual chunk (#2809)
1054* No longer fail for unnamed duplicate entry points but combine them (#2809)
1055* Always return `string | null` from `this.resolveId` even if some `resolveId` hooks return objects (#2829)
1056* Show proper warnings when `resolveDynamicImport` resolves to a non-external module that does not exist (#2829)
1057
1058### Pull Requests
1059* [#2809](https://github.com/rollup/rollup/pull/2809): Add hook for dynamic entry chunk emission (@lukastaegert)
1060* [#2821](https://github.com/rollup/rollup/pull/2821): Fix syntax error in documentation (@FFxSquall)
1061* [#2829](https://github.com/rollup/rollup/pull/2829): Improve id resolution (@lukastaegert)
1062* [#2831](https://github.com/rollup/rollup/pull/2831): Allow manualChunks to be a function (@lukastaegert)
1063* [#2832](https://github.com/rollup/rollup/pull/2832): Improve `generateBundle` documentation (@lukastaegert)
1064* [#2833](https://github.com/rollup/rollup/pull/2833): Update dependencies (@lukastaegert)
1065
1066## 1.10.1
1067*2019-04-19*
1068
1069### Bug Fixes
1070* Invalid options.format values will now trigger a helpful error (#2813)
1071
1072### Pull Requests
1073* [#2812](https://github.com/rollup/rollup/pull/2812): Minor documentation update (@dnalborczyk)
1074* [#2813](https://github.com/rollup/rollup/pull/2813): Catch invalid options.format values (@marijnh)
1075* [#2816](https://github.com/rollup/rollup/pull/2816): Update all dependencies to fix security issues (@lukastaegert)
1076
1077## 1.10.0
1078*2019-04-11*
1079
1080### Features
1081* Improve generated code to polyfill `import.meta.url` (#2785)
1082* Add plugin hook to configure handling of `import.meta` (#2785)
1083* Improve generated code when accessing URLs of emitted assets (#2796)
1084* Add plugin hook to configure the generated code when accessing URLs of emitted assets (#2796)
1085
1086### Bug Fixes
1087* No longer resolve assets to their parent URL in some cases (#2796)
1088
1089### Pull Requests
1090* [#2785](https://github.com/rollup/rollup/pull/2785): Refactor handling of import.meta.url and add option to configure behaviour (@lukastaegert)
1091* [#2796](https://github.com/rollup/rollup/pull/2796): Improve and fix asset emission (@lukastaegert)
1092
1093## 1.9.3
1094*2019-04-10*
1095
1096### Bug Fixes
1097* Simplify return expressions that are evaluated before the surrounding function is bound (#2803)
1098
1099### Pull Requests
1100* [#2803](https://github.com/rollup/rollup/pull/2803): Handle out-of-order binding of identifiers to improve tree-shaking (@lukastaegert)
1101
1102## 1.9.2
1103*2019-04-10*
1104
1105### Bug Fixes
1106* Allowing replacing `output.file` with `output.dir` in the `outputOptions` hook (#2802)
1107
1108### Pull Requests
1109* [#2802](https://github.com/rollup/rollup/pull/2802): Observe modified output options in bundle.write (@lukastaegert)
1110
1111## 1.9.1
1112*2019-04-10*
1113
1114### Bug Fixes
1115* Make sure inline comments in dynamic imports are preserved (#2797)
1116
1117### Pull Requests
1118* [#2797](https://github.com/rollup/rollup/pull/2797): Emit inline comments inside dynamic import (@manucorporat)
1119
1120## 1.9.0
1121*2019-04-05*
1122
1123### Features
1124* Add built-in support for bigint (#2789)
1125
1126### Pull Requests
1127* [#2789](https://github.com/rollup/rollup/pull/2789): Ship with bigint support built-in (@danielgindi)
1128* [#2791](https://github.com/rollup/rollup/pull/2791): Use shared extractAssignedNames from rollup-pluginutils (@lukastaegert)
1129* [#2792](https://github.com/rollup/rollup/pull/2792): Test that rollup-plugin-commonjs works with preserveModules (@lukastaegert)
1130
1131## 1.8.0
1132*2019-04-02*
1133
1134### Features
1135* Support `module` as alias for `esm` and `commonjs` for `cjs` to match Node (#2783)
1136
1137### Pull Requests
1138* [#2782](https://github.com/rollup/rollup/pull/2782): Inline interopDefault in config loading (@guybedford)
1139* [#2783](https://github.com/rollup/rollup/pull/2783): Support Node-style format aliases (@guybedford)
1140
1141## 1.7.4
1142*2019-03-28*
1143
1144### Bug Fixes
1145* Improve TypeScript type of the treeshaking options (#2779)
1146
1147### Pull Requests
1148* [#2779](https://github.com/rollup/rollup/pull/2779): Make all properties in TreeshakingOptions optional (@ndelangen)
1149
1150## 1.7.3
1151*2019-03-24*
1152
1153### Bug Fixes
1154* Use getters when re-exporting live-bindings (#2765)
1155
1156### Pull Requests
1157* [#2765](https://github.com/rollup/rollup/pull/2765): Support exporting live-bindings from other chunks or external dependencies (@lukastaegert)
1158
1159## 1.7.2
1160*2019-03-24*
1161
1162### Bug Fixes
1163* Make sure relative external ids are resolved correctly (#2774)
1164
1165### Pull Requests
1166* [#2774](https://github.com/rollup/rollup/pull/2774): Resolve relative external ids (@lukastaegert)
1167
1168## 1.7.1
1169*2019-03-24*
1170
1171### Bug Fixes
1172* Prevent invalid code when exporting several hundred identifiers from a chunk (#2768)
1173* Do not wrongly deconflict labels (#2776)
1174
1175### Pull Requests
1176* [#2768](https://github.com/rollup/rollup/pull/2768): Sanitize shortened internal export names (@lukastaegert)
1177* [#2769](https://github.com/rollup/rollup/pull/2769): Update dependencies and fix security issue (@lukastaegert)
1178* [#2776](https://github.com/rollup/rollup/pull/2776): Do not treat break labels as identifiers (@lukastaegert)
1179
1180## 1.7.0
1181*2019-03-20*
1182
1183### Features
1184* Sort chunk exports by name for greater consistency (#2757)
1185
1186### Bug Fixes
1187* Fix a situation where tree-shakeable code would not be removed in an indeterminate manner (#2757)
1188
1189### Pull Requests
1190* [#2757](https://github.com/rollup/rollup/pull/2757): Sort modules before binding, sort exports (@lukastaegert)
1191
1192## 1.6.1
1193*2019-03-20*
1194
1195### Bug Fixes
1196* Avoid name clashes of unused default exports when tree-shaking is false (#2758)
1197* Do not crash when generating SystemJS bundles containing array patterns with member expressions (#2760)
1198
1199### Pull Requests
1200* [#2758](https://github.com/rollup/rollup/pull/2758): Make sure unused default exports are deconflicted when tree-shaking is false (@lukastaegert)
1201* [#2760](https://github.com/rollup/rollup/pull/2760): Handle member expressions in array patterns (@lukastaegert)
1202
1203## 1.6.0
1204*2019-03-08*
1205
1206### Features
1207* Add plugin hook to modify output options (#2736)
1208
1209### Pull Requests
1210* [#2736](https://github.com/rollup/rollup/pull/2736): Add hook for modifying OutputOptions (@Comandeer)
1211
1212## 1.5.0
1213*2019-03-07*
1214
1215### Features
1216* Allow resolving to a different id while marking it as external at the same time (#2734)
1217
1218### Pull Requests
1219* [#2734](https://github.com/rollup/rollup/pull/2734): Allow resolveId to return an object (@lukastaegert)
1220
1221## 1.4.2
1222*2019-03-07*
1223
1224### Bug Fixes
1225* Respect variable identity of exports when hashing (#2741)
1226* Resolve a situations where a variable was imported twice with the same name (#2737)
1227
1228### Pull Requests
1229* [#2741](https://github.com/rollup/rollup/pull/2741): Fix hashing when different variable are exported using the same name (@lukastaegert)
1230* [#2737](https://github.com/rollup/rollup/pull/2737): Fix duplicate imports with conflicting names (@lukastaegert)
1231
1232## 1.4.1
1233*2019-03-04*
1234
1235### Bug Fixes
1236* Do not treat the import target "" as external by default (#2733)
1237
1238### Pull Requests
1239* [#2733](https://github.com/rollup/rollup/pull/2733): Do not treat the import target "" as external by default (@LongTengDao)
1240
1241## 1.4.0
1242*2019-03-01*
1243
1244### Features
1245* Add option to change the name of the dynamic import function to allow polyfilling it (#2723)
1246
1247### Pull Requests
1248* [#2723](https://github.com/rollup/rollup/pull/2723): Add dynamicImportFunction option (@keithamus)
1249
1250## 1.3.3
1251*2019-03-01*
1252
1253### Bug Fixes
1254* Fix performance regression when handling long chains of calls to property methods (#2732)
1255
1256### Pull Requests
1257* [#2730](https://github.com/rollup/rollup/pull/2730): Order types, interfaces, classes, and object members (@lukastaegert)
1258* [#2732](https://github.com/rollup/rollup/pull/2732): Take chunk export mode into account when reexporting default (@lukastaegert)
1259
1260## 1.3.2
1261*2019-02-27*
1262
1263### Bug Fixes
1264* Allow ids of default exported classes to be exported separately (#2728)
1265
1266### Pull Requests
1267* [#2728](https://github.com/rollup/rollup/pull/2728): Update dependencies (@lukastaegert)
1268
1269## 1.3.1
1270*2019-02-27*
1271
1272### Bug Fixes
1273* Correctly reexport the default export from entry chunks (#2727)
1274
1275### Pull Requests
1276* [#2727](https://github.com/rollup/rollup/pull/2727): Take chunk export mode into account when reexporting default (@lukastaegert)
1277
1278## 1.3.0
1279*2019-02-26*
1280
1281### Features
1282* Treeshake call expressions prefixed with UglifyJS style `@__PURE__` annotations (#2429)
1283
1284### Pull Requests
1285* [#2429](https://github.com/rollup/rollup/pull/2429): Add support for /*#__PURE__*/ comments (@conartist6 and @lukastaegert)
1286
1287## 1.2.5
1288*2019-02-26*
1289
1290### Bug Fixes
1291* Store external ids reported by plugins in watch mode (#2718)
1292
1293### Pull Requests
1294* [#2718](https://github.com/rollup/rollup/pull/2718): Incremental external (@andreas-karlsson)
1295
1296## 1.2.4
1297*2019-02-26*
1298
1299### Bug Fixes
1300* Fix an issue where a variable was imported twice under the same name (#2715)
1301
1302### Pull Requests
1303* [#2715](https://github.com/rollup/rollup/pull/2715): Deduplicate imports referencing default exports and their original variables (@lukastaegert)
1304
1305## 1.2.3
1306*2019-02-23*
1307
1308### Bug Fixes
1309* Use correct path when rendering dynamic imports where the entry module is empty (#2714)
1310
1311### Pull Requests
1312* [#2714](https://github.com/rollup/rollup/pull/2714): Properly render dynamic imports when imported module is empty (@lukastaegert)
1313
1314## 1.2.2
1315*2019-02-19*
1316
1317### Bug Fixes
1318* Fix wrong external imports when using the `paths` options only for some outputs (#2706)
1319
1320### Pull Requests
1321* [#2706](https://github.com/rollup/rollup/pull/2706): Always recreate paths for external modules (@lukastaegert)
1322
1323## 1.2.1
1324*2019-02-17*
1325
1326### Bug Fixes
1327* Fix ESM version of Rollup (#2705)
1328
1329### Pull Requests
1330* [#2705](https://github.com/rollup/rollup/pull/2705): Fix ESM version of Rollup (@lukastaegert)
1331
1332## 1.2.0
1333*2019-02-17*
1334
1335### Features
1336* Fewer renamed variables due to a completely reimplemented deconflicting logic (#2689)
1337
1338### Bug Fixes
1339* Respect rendered and tree-shaken exports when determining chunk hashes (#2695)
1340* Fix an error when dynamic imports end up in the same chunk as one of their importees (#2677)
1341* Do not generate invalid code when expressions containing IIFEs are simplified (#2696)
1342* Do not throw an error when more than ten bundles are watched (#2700)
1343* Treat re-exported globals in a spec-compliant way (#2691)
1344* Fix issues related to wrongly renamed variables (#2689)
1345* Do not throw an error if config files contain non-default exports (#2673)
1346* Improve type of `RollupOutput.output` to guarantee at least one chunk (#2679)
1347
1348### Pull Requests
1349* [#2673](https://github.com/rollup/rollup/pull/2673): Allow config files to have non-default exports (@swansontec)
1350* [#2677](https://github.com/rollup/rollup/pull/2677): Prevent final resolution and facade creation for inlined dynamic imports (@Rich-Harris and @lukastaegert)
1351* [#2679](https://github.com/rollup/rollup/pull/2679): Improve type of `RollupOutput.output` (@MattiasBuelens)
1352* [#2689](https://github.com/rollup/rollup/pull/2689): Reimplement variable deconflicting logic (@lukastaegert)
1353* [#2691](https://github.com/rollup/rollup/pull/2691): Fix CI issues and update acorn dependency (@lukastaegert)
1354* [#2693](https://github.com/rollup/rollup/pull/2693): Fix typo in export-globals test (@MattiasBuelens)
1355* [#2695](https://github.com/rollup/rollup/pull/2695): Respect rendered exports when generating chunk hashes (@lukastaegert)
1356* [#2696](https://github.com/rollup/rollup/pull/2696): Correctly render function expression inside simplified expression statements (@lukastaegert)
1357* [#2700](https://github.com/rollup/rollup/pull/2700): Add a fix for MaxListenersExceededWarning (@luwes)
1358* [#2703](https://github.com/rollup/rollup/pull/2703): Update rollup-pluginutils (@lukastaegert)
1359
1360## 1.1.2
1361*2019-01-21*
1362
1363### Bug Fixes
1364* Tree-shaken dynamic imports no longer leave behind `undefined` entries in the bundle information (#2663)
1365* Dynamic imports in dynamically imported files could lead to crashes and would not always create new chunks (#2664)
1366
1367### Pull Requests
1368* [#2663](https://github.com/rollup/rollup/pull/2663): Do not include tree-shaken dynamic imports in bundle information (@lukastaegert)
1369* [#2664](https://github.com/rollup/rollup/pull/2664): Properly handle dynamic imports declared in dynamically imported files (@everdimension)
1370
1371## 1.1.1
1372*2019-01-19*
1373
1374### Bug Fixes
1375* Make sure object prototype methods are not considered to be falsy when tree-shaking (#2652)
1376
1377### Pull Requests
1378* [#2652](https://github.com/rollup/rollup/pull/2652): Make sure object prototype methods are not considered to be falsy (@lukastaegert)
1379* [#2654](https://github.com/rollup/rollup/pull/2654): Use correct signature for `this.setAssetSource` in docs (@everdimension)
1380* [#2656](https://github.com/rollup/rollup/pull/2656): Swap descriptions for `[extname]` and `[ext]` in docs (@tivac)
1381
1382## 1.1.0
1383*2019-01-09*
1384
1385### Features
1386* Make `this.meta` available from the `options` plugin hook (#2642)
1387* Add a new `writeBundle` plugin hook that is called *after* all files have been written (#2643)
1388
1389### Bug Fixes
1390* Make sure the `acorn` import of the bundled non-ESM acorn plugins is correctly translated to ESM (#2636)
1391* Make sure input options are actually passed to the `buildStart` hook (#2642)
1392
1393### Pull Requests
1394* [#2636](https://github.com/rollup/rollup/pull/2636): Improve how acorn is imported, update dependencies (@lukastaegert)
1395* [#2642](https://github.com/rollup/rollup/pull/2642): Make this.meta available in options hook, pass input options to buildStart (@lukastaegert)
1396* [#2643](https://github.com/rollup/rollup/pull/2643): Implement writeBundle hook (@lukastaegert)
1397
1398## 1.0.2
1399*2019-01-05*
1400
1401### Bug Fixes
1402* Make sure the transform hook is always reevaluated when a file watched by the hook changes (#2633)
1403* Fix a crash when generating hashes for tree-shaken dynamic imports (#2638)
1404* Fix a crash and some inconsistencies when using the acorn-bigint plugin (#2640)
1405
1406### Pull Requests
1407* [#2633](https://github.com/rollup/rollup/pull/2633): Document `this.addWatchFile` and make sure it also declares transform dependencies (@lukastaegert)
1408* [#2635](https://github.com/rollup/rollup/pull/2635): Make sure `code` is optional in warning type (@lukastaegert)
1409* [#2638](https://github.com/rollup/rollup/pull/2638): Do not fail when generating hashes for tree-shaken dynamic imports (@lukastaegert)
1410* [#2640](https://github.com/rollup/rollup/pull/2640): Always treat bigints as unknown (@lukastaegert)
1411* [#2641](https://github.com/rollup/rollup/pull/2641): Make sure all CLI options are listed in the summary (@lukastaegert)
1412
1413## 1.0.1
1414*2019-01-03*
1415
1416### Bug Fixes
1417* Properly handle reexporting an external default export for non-ESM targets when using named exports mode (#2620)
1418* Do not (wrongly) re-declare input options in the merged `RollupOptions` type (#2622)
1419
1420### Pull Requests
1421* [#2620](https://github.com/rollup/rollup/pull/2620): Fixed issue with reexporting default as default with `{exports: named, interop: true}` options (@Andarist)
1422* [#2622](https://github.com/rollup/rollup/pull/2622): Simplify RollupOptions (@Kinrany)
1423* [#2627](https://github.com/rollup/rollup/pull/2627): Show how to skip imports for optional plugins (@chris-morgan)
1424
1425## 1.0.0
1426*2018-12-28*
1427
1428### Breaking Changes
1429* Several (mostly deprecated) options have been removed or renamed (#2293, #2409):
1430 - banner -> output.banner
1431 - dest -> output.file
1432 - entry -> input
1433 - experimentalCodeSplitting -> now always active
1434 - experimentalDynamicImport -> now always active
1435 - experimentalPreserveModules -> preserveModules
1436 - exports -> output.exports
1437 - extend -> output.extend
1438 - footer -> output.footer
1439 - format -> output.format
1440 - freeze -> output.freeze
1441 - globals -> output.globals
1442 - indent -> output.indent
1443 - interop -> output.interop
1444 - intro -> output.intro
1445 - load -> use plugin API
1446 - moduleName -> output.name
1447 - name -> output.name
1448 - noConflict -> output.noConflict
1449 - output.moduleId -> output.amd.id
1450 - outro -> output.outro
1451 - paths -> output.paths
1452 - preferConst -> output.preferConst
1453 - pureExternalModules -> treeshake.pureExternalModules
1454 - resolveExternal -> use plugin API
1455 - resolveId -> use plugin API
1456 - sourcemap -> output.sourcemap
1457 - sourceMap -> output.sourcemap
1458 - sourceMapFile -> output.sourcemapFile
1459 - strict -> output.strict
1460 - targets -> use output as an array
1461 - transform -> use plugin API
1462 - useStrict -> output.strict
1463* In general, output options can no longer be used as input options (#2409)
1464* `bundle.generate` and `bundle.write` now return a new format (#2293)
1465* Several plugin hooks have become deprecated and will display warnings when used (#2409):
1466 - transformBundle
1467 - transformChunk
1468 - ongenerate
1469 - onwrite
1470* Plugin transform dependencies are deprecated in favour of using the `this.addWatchFile` plugin context function (#2409)
1471* Accessing `this.watcher` in plugin hooks is deprecated in favour of the `watchChange` plugin hook and the `this.addWatchFile` plugin context function (#2409)
1472* Using dynamic import statements will by default create a new chunk unless `inlineDynamicImports` is used (#2293)
1473* Rollup now uses acorn@6 which means that acorn plugins must be compatible with this version; acorn is now external for non-browser builds to make plugins work (#2293)
1474
1475### Features
1476* The `--dir` ClI option can now be aliased as `-d` (#2293)
1477* The `--input` option now supports named entry points via `=` (#2293)
1478
1479### Bug Fixes
1480* Both the `--input` option as well as the default CLI option now support named inputs (#2293)
1481
1482### Pull Requests
1483* [#2293](https://github.com/rollup/rollup/pull/2293): Unify code paths for 1.0 relase and update documentation (@guybedford and @lukastaegert)
1484* [#2409](https://github.com/rollup/rollup/pull/2409): Remove old deprecated features and add new deprecation warnings (@guybedford)
1485* [#2486](https://github.com/rollup/rollup/pull/2486): Upgrade to acorn 6 (@marijnh)
1486* [#2611](https://github.com/rollup/rollup/pull/2611): Fix hook's name in test description (@Andarist)
1487* [#2612](https://github.com/rollup/rollup/pull/2612): Fix a self-contradicting comment in the docs (@LongTengDao)
1488
1489## 0.68.2
1490*2018-12-23*
1491
1492### Bug Fixes
1493* Do not assume hoisted variables to have been initialized (#2607)
1494
1495### Pull Requests
1496* [#2607](https://github.com/rollup/rollup/pull/2607): Fix an issues where hoisted variables were assumed to have been initialized (@lye)
1497
1498## 0.68.1
1499*2018-12-19*
1500
1501### Bug Fixes
1502* Fix an issue with UMD wrappers where a variable is used without being defined (#2600)
1503
1504### Pull Requests
1505* [#2600](https://github.com/rollup/rollup/pull/2600): Fix UMD and IIFE wrapper issues and add comprehensive functional wrapper tests (@lukastaegert)
1506
1507## 0.68.0
1508*2018-12-16*
1509
1510### Breaking Changes
1511* `optimizeChunks` is renamed to `experimentalOptimizeChunks` to reflect this feature is not production-ready yet (#2575)
1512
1513### Features
1514* Plugins can iterate all module ids via `this.moduleIds` (#2565)
1515* Plugins can get graph information about a module via `this.getModuleInfo(id)` (#2565)
1516* Plugins and JS API users get more information about the generated chunks: `dynamicImports`, `facadeModuleId`, `isDynamicEntry`, `name` (#2575)
1517* Tree-shaken dynamic imports will no longer create chunks or influence chunking in any way (#2575)
1518* Dynamic imports will no longer follow the `entryFileNames` but the `chunkFileNames` property reflecting those are solely internally used (#2575)
1519* If there are chunk naming conflicts, entry chunks will always take precedence (#2575)
1520* If an entry facade is created, only the facade chunk is marked as `isEntry` (#2575)
1521* Dynamic chunks will only be marked as `isEntry` if they are actually entry chunks as well; thus there is now a 1-to-1 correspondence between modules listed in `input` and chunks marked as `isEntry` (#2575)
1522* Chunks no longer contain imports for variables that are tree-shaken in the chunk but used in other chunks (#2584)
1523* Chunks will always import re-exported variables directly from the chunk where they are originally exported from (#2584)
1524* Null characters will be pruned from chunk ids to allow for virtually created chunks and make `rollup-plugin-multi-entry` compatible with code-splitting and thus the upcoming 1.0 version (#2590)
1525* Simplify the UMD wrapper code as much as possible, especially if there are no exports (#2594)
1526* The UMD wrapper will now work in strict mode by checking for `self` before `this` when determining the global variable (#2594)
1527
1528### Bug Fixes
1529* If a facade is created for a dynamic entry point, this facade will be imported instead of the facaded chunk (#2575)
1530* Manual chunks that include multiple entry points will have proper facades created for all entry points if necessary (#2575)
1531* If missing exports are shimmed, the shim variable will not be global but created on a per-module basis and is deconflicted with variables having the same name (#2584)
1532* Missing export shims work properly in SystemJS (#2584)
1533* `preserveModules` now handles dynamic namespace imports (#2584)
1534* Fix chunk execution order in certain scenarios (#2584)
1535* Exports and assignments using destructuring syntax will properly update the exported variables when generating SystemJS output (#2587)
1536* Hashes in chunk names will now also take dynamic imports into account (#2596)
1537
1538### Pull Requests
1539* [#2565](https://github.com/rollup/rollup/pull/2565): Provide module graph information on the plugin context (@samccone)
1540* [#2575](https://github.com/rollup/rollup/pull/2575): Extend bundle information, tree-shake dynamic imports, fix dynamic import facade creation, support manual chunks with multiple entry points, make `optimizeChunks` experimental (@lukastaegert)
1541* [#2577](https://github.com/rollup/rollup/pull/2577): Update dependencies (@lukastaegert)
1542* [#2584](https://github.com/rollup/rollup/pull/2584): Prune tree-shaken chunk imports, fix missing export shimming, support dynamic namespaces when preserving modules, improve chunk execution order (@lukastaegert)
1543* [#2587](https://github.com/rollup/rollup/pull/2587): Support exports using destructuring declarations and assignments in SystemJS (@lukastaegert)
1544* [#2590](https://github.com/rollup/rollup/pull/2590): Make sure chunk ids do not contain invalid characters to allow for chunks to correspond to virtual modules (@lukastaegert)
1545* [#2594](https://github.com/rollup/rollup/pull/2594): Simplify UMD wrapper code and make sure it works in strict mode (@lukastaegert)
1546* [#2596](https://github.com/rollup/rollup/pull/2596): Take both static and dynamic dependencies into account when calculating hashes (@lukastaegert)
1547
1548## 0.67.4
1549*2018-12-03*
1550
1551### Bug Fixes
1552* Prevent corrupt source maps for files with very long lines (#2571)
1553
1554### Pull Requests
1555* [#2571](https://github.com/rollup/rollup/pull/2571): Fix an issue with long lines in sourcemaps (@mislav)
1556
1557## 0.67.3
1558*2018-11-17*
1559
1560### Bug Fixes
1561* Make sure the ESM browser build is actually published to npm (#2560)
1562* Throw proper error when using `inlineDynamicImports` with `experimentalPreserveModules` (#2560)
1563
1564### Pull Requests
1565* [#2552](https://github.com/rollup/rollup/pull/2552): Properly include ESM browser build in package (@lukastaegert)
1566* [#2560](https://github.com/rollup/rollup/pull/2560): Show proper error when using `inlineDynamicImports` with `experimentalPreserveModules` (@clarkdo)
1567
1568## 0.67.2
1569*2018-11-17*
1570
1571### Bug Fixes
1572* Prevent crash when not returning sourcemaps from `renderChunk` plugin hook (#2558)
1573
1574### Pull Requests
1575* [#2558](https://github.com/rollup/rollup/pull/2558): Prevent crash when not returning sourcemaps from `renderChunk` (@kyle1320)
1576
1577## 0.67.1
1578*2018-11-11*
1579
1580### Bug Fixes
1581* Deconflict CLI entry points with same name but on different paths if no explicit naming is used (#2548)
1582
1583### Pull Requests
1584* [#2548](https://github.com/rollup/rollup/pull/2548): Deconflict CLI entry points with same name but on different paths if no explicit naming is used (@lukastaegert)
1585
1586## 0.67.0
1587*2018-11-04*
1588
1589### Breaking Changes
1590none
1591
1592### Features
1593* Do not resolve external dynamic imports via plugins to match the logic for static external imports again (#2505)
1594* Support virtual modules created by plugins when preserving modules (#2511)
1595* Add new `output.sourcemapExcludeSources` option to exclude the actual sources from sourcemaps (#2531)
1596
1597### Bug Fixes
1598* Fix TypeScript type for sourcemaps (#2507)
1599* Fix order of external and inter-chunk imports to match the proper execution order (#2508)
1600* Do not tree-shake children of unknown nodes to e.g. properly handle do-expressions via acorn plugin (#2510)
1601* Prevent memory leak when using the bundle as cache (#2522)
1602* Fix mis-placed semicolons for certain SystemJS exports (#2529)
1603
1604### Pull Requests
1605* [#2505](https://github.com/rollup/rollup/pull/2505): Do not resolve external dynamic imports via plugins (@lukastaegert)
1606* [#2507](https://github.com/rollup/rollup/pull/2507): Fix public sourcemap type (@aMarCruz)
1607* [#2508](https://github.com/rollup/rollup/pull/2508): Improve execution order of chunks and externals (@lukastaegert)
1608* [#2510](https://github.com/rollup/rollup/pull/2510): Do not tree-shake children of unknown nodes to e.g. properly handle do-expressions via acorn plugin (@devsnek)
1609* [#2511](https://github.com/rollup/rollup/pull/2511): Create chunks for virtual modules when preserving modules (@lukastaegert)
1610* [#2522](https://github.com/rollup/rollup/pull/2522): Prevent memory leak when using the bundle as cache (@kyle1320)
1611* [#2529](https://github.com/rollup/rollup/pull/2529): Fix mis-placed semicolons for certain SystemJS exports (@kyle1320)
1612* [#2531](https://github.com/rollup/rollup/pull/2531): add `sourcemapExcludeSources` option to exclude the source content from sourcemaps (@kitsonk)
1613
1614## 0.66.6
1615*2018-10-10*
1616* Properly deconflict function and class declaration ids of reassigned default exports ([#2502](https://github.com/rollup/rollup/pull/2502))
1617
1618## 0.66.5
1619*2018-10-09*
1620* Remove cache from memory once no longer needed ([#2496](https://github.com/rollup/rollup/pull/2496))
1621* Provide better error message when reexporting external namespace reexports ([#2499](https://github.com/rollup/rollup/pull/2499))
1622
1623## 0.66.4
1624*2018-10-04*
1625* Fix links in warnings and errors ([#2471](https://github.com/rollup/rollup/pull/2471))
1626
1627## 0.66.3
1628*2018-10-03*
1629* Detect side-effects in string.replace function arguments ([#2476](https://github.com/rollup/rollup/pull/2476))
1630* Make sure chunk ids are assigned before creating output bundle ([#2483](https://github.com/rollup/rollup/pull/2483))
1631* Use proper plugin name in error ([#2470](https://github.com/rollup/rollup/pull/2470))
1632* Update TypeScript version and fix type errors ([#2488](https://github.com/rollup/rollup/pull/2488))
1633
1634## 0.66.2
1635*2018-09-21*
1636* Add additional information to parse errors messages in JSON and other non-JS files ([#2466](https://github.com/rollup/rollup/pull/2466))
1637
1638## 0.66.1
1639*2018-09-19*
1640* Ignore falsy plugins ([#2464](https://github.com/rollup/rollup/pull/2464))
1641* Switch back to official TypeScript plugin ([#2465](https://github.com/rollup/rollup/pull/2465))
1642
1643## 0.66.0
1644*2018-09-16*
1645* Support ES2019 optional catch bindings ([#2455](https://github.com/rollup/rollup/pull/2455))
1646* Add option to transform paths within sourcemaps ([#2430](https://github.com/rollup/rollup/pull/2430))
1647* Add renderStart and renderEnd plugin hooks ([#2438](https://github.com/rollup/rollup/pull/2438))
1648* Expose ESM browser build and minify browser builds ([#2437](https://github.com/rollup/rollup/pull/2437)
1649* Associate hoisted variables in function bodys with function parameters ([#2456](https://github.com/rollup/rollup/pull/2456))
1650* Fix issue when deconflicting variables used as pattern defaults ([#2446](https://github.com/rollup/rollup/pull/2446))
1651* Properly deconflict default exported class and function expressions with ids ([#2458](https://github.com/rollup/rollup/pull/2458))
1652* Faster internal test builds ([#2457](https://github.com/rollup/rollup/pull/2457))
1653* Switch to rollup-plugin-typescript2 ([#2460](https://github.com/rollup/rollup/pull/2460))
1654* Fix internal "perf" script ([#2433](https://github.com/rollup/rollup/pull/2433))
1655* Test that errors are passed to the buildEnd hook ([#2450](https://github.com/rollup/rollup/pull/2450))
1656
1657## 0.65.2
1658*2018-09-05*
1659* Prevent watch mode memory leak ([#2441](https://github.com/rollup/rollup/pull/2441))
1660
1661## 0.65.1
1662*2018-09-05*
1663* Prevent globbing when using chokidar ([#2432](https://github.com/rollup/rollup/pull/2432))
1664
1665## 0.65.0
1666*2018-08-25*
1667* Refactor and unify plugin system ([#2382](https://github.com/rollup/rollup/pull/2382))
1668* Implement plugin cache API ([#2389](https://github.com/rollup/rollup/pull/2389))
1669* Add watchChange plugin hook to watch changed files, deprecate asset dependencies ([#2405](https://github.com/rollup/rollup/pull/2405))
1670* Refine asset handling ([#2369](https://github.com/rollup/rollup/pull/2369))
1671* Implement `renderChunk` hook to replace `transformChunk` and `transformBundle` hooks ([#2406](https://github.com/rollup/rollup/pull/2406))
1672* Add rollup version to plugin context ([#2394](https://github.com/rollup/rollup/pull/2394))
1673* Do not resume stdin in watch mode to fix it for Lerna users ([#2410](https://github.com/rollup/rollup/pull/2410))
1674* Allow `[format]` placeholder for id generation ([#2387](https://github.com/rollup/rollup/pull/2387))
1675* Always log error stacks even when a code frame is given ([#2417](https://github.com/rollup/rollup/pull/2417))
1676* Do not test module ids starting with `\0` as external ([#2400](https://github.com/rollup/rollup/pull/2400))
1677* Fix tracing of namespace variables ([#2408](https://github.com/rollup/rollup/pull/2408))
1678* Fix re-tracing of namespace variables ([#2420](https://github.com/rollup/rollup/pull/2420))
1679* Properly wrap comment annotations in SystemJS exports ([#2408](https://github.com/rollup/rollup/pull/2408))
1680* Fix renaming of destructured parameters ([#2419](https://github.com/rollup/rollup/pull/2419))
1681* Do not display version in watch mode when using `--silent` ([#2392](https://github.com/rollup/rollup/pull/2392))
1682* Make `cacheExpiry` an experimental option for now ([#2401](https://github.com/rollup/rollup/pull/2401))
1683* Lint test configs on commit ([#2402](https://github.com/rollup/rollup/pull/2402))
1684* Add code of conduct ([#2388](https://github.com/rollup/rollup/pull/2388))
1685* Move to CircleCI ([#2390](https://github.com/rollup/rollup/pull/2390))
1686* Update pull request template ([#2404](https://github.com/rollup/rollup/pull/2404))
1687
1688## 0.64.1
1689*2018-08-07*
1690* Do not render initializers of hoisted variables in dead branches ([#2384](https://github.com/rollup/rollup/pull/2384))
1691
1692## 0.64.0
1693*2018-08-07*
1694* Print memory consumption together with performance timings ([#2370](https://github.com/rollup/rollup/pull/2370))
1695* Enable plugins to mark imports as external by returning false for resolveId ([#2351](https://github.com/rollup/rollup/pull/2351))
1696* Always retain empty manual chunks ([#2362](https://github.com/rollup/rollup/pull/2362))
1697* Ensure CLI warnings are shown on errors and add error for external id collisions ([#2334](https://github.com/rollup/rollup/pull/2334))
1698* Remove unnecessary dependency, update dependencies, fix linting of test config ([#2376](https://github.com/rollup/rollup/pull/2376))
1699* Add targeted Github issue templates ([#2356](https://github.com/rollup/rollup/pull/2356))
1700
1701## 0.63.5
1702*2018-08-01*
1703* Ensure onwrite plugin hooks execute in sequence ([#2364](https://github.com/rollup/rollup/pull/2364))
1704* Always warn when no name is provided for a global module ([#2359](https://github.com/rollup/rollup/pull/2359))
1705* Add utility type for user created plugins ([#2355](https://github.com/rollup/rollup/pull/2355))
1706* Remove deprecated es6 format from types ([#2349](https://github.com/rollup/rollup/pull/2349))
1707* Mark inlineDynamicImports as optional in types ([#2348](https://github.com/rollup/rollup/pull/2348))
1708
1709## 0.63.4
1710*2018-07-20*
1711* Use turbocolor instead of chalk ([#2339](https://github.com/rollup/rollup/pull/2339))
1712
1713## 0.63.3
1714*2018-07-20*
1715* Handle expressions where "in" and "instanceof" are applied to primitive values ([#2344](https://github.com/rollup/rollup/pull/2344))
1716
1717## 0.63.2
1718*2018-07-18*
1719* Fix bind order in for-of loops ([#2338](https://github.com/rollup/rollup/pull/2338))
1720
1721## 0.63.1
1722*2018-07-18*
1723
1724## 0.63.0
1725*2018-07-17*
1726* Fix many tree-shaking related issues ([#2315](https://github.com/rollup/rollup/pull/2315))
1727* Add experimental support for top-level await ([#2235](https://github.com/rollup/rollup/pull/2235))
1728* Prevent duplicate version printout in watch mode ([#2325](https://github.com/rollup/rollup/pull/2325))
1729* Respect error frames provided by plugins ([#2309](https://github.com/rollup/rollup/pull/2309))
1730* Add `esm` format alias to types ([#2327](https://github.com/rollup/rollup/pull/2327))
1731* Further unify internal test setup ([#2329](https://github.com/rollup/rollup/pull/2329))
1732
1733## 0.62.0
1734*2018-06-27*
1735* Add option to automatically shim missing exports ([#2118](https://github.com/rollup/rollup/pull/2118))
1736* Inline dynamic imports that are also imported statically and only used in a single chunk ([#2295](https://github.com/rollup/rollup/pull/2295))
1737* Handle caching and invalidation of assets ([#2267](https://github.com/rollup/rollup/pull/2267))
1738* Fix plugin related types ([#2299](https://github.com/rollup/rollup/pull/2299))
1739
1740## 0.61.2
1741*2018-06-23*
1742* Improve watcher error handling, only rebuild invalidated outputs ([#2296](https://github.com/rollup/rollup/pull/2296))
1743* Update dependencies, make watcher more stable ([#2297](https://github.com/rollup/rollup/pull/2297))
1744
1745## 0.61.1
1746*2018-06-21*
1747* Do not try to deconflict "undefined" ([#2291](https://github.com/rollup/rollup/pull/2291))
1748* Properly track values for loop interator declarations and reassigned namespaces, add smoke test ([#2292](https://github.com/rollup/rollup/pull/2292))
1749
1750## 0.61.0
1751*2018-06-20*
1752* Declare file dependencies via transform plugin hooks ([#2259](https://github.com/rollup/rollup/pull/2259))
1753* Handle undefined values when evaluating conditionals ([#2264](https://github.com/rollup/rollup/pull/2264))
1754* Handle known undefined properties when evaluating conditionals ([#2265](https://github.com/rollup/rollup/pull/2265))
1755* Access watch events via the plugin context ([#2261](https://github.com/rollup/rollup/pull/2261))
1756* Add option to suppress `__esModule` flag in output ([#2287](https://github.com/rollup/rollup/pull/2287))
1757* Fix issue when re-declaring variables, track reassignments in more cases ([#2279](https://github.com/rollup/rollup/pull/2279))
1758* Add VSCode debug settings ([#2276](https://github.com/rollup/rollup/pull/2276))
1759
1760## 0.60.7
1761*2018-06-14*
1762* Fix typing issue ([#2269](https://github.com/rollup/rollup/pull/2269))
1763
1764## 0.60.6
1765*2018-06-14*
1766* Track mutations of included virtual arrays ([#2263](https://github.com/rollup/rollup/pull/2263))
1767* Update readme ([#2266](https://github.com/rollup/rollup/pull/2266))
1768
1769## 0.60.5
1770*2018-06-14*
1771* Track deep reassignments of global and exported variables and improve performance ([#2254](https://github.com/rollup/rollup/pull/2254))
1772
1773## 0.60.4
1774*2018-06-13*
1775* Properly handle initially uninitialized exports and exports of globals in SystemJS output ([#2258](https://github.com/rollup/rollup/pull/2258))
1776
1777## 0.60.3
1778*2018-06-13*
1779* Fix types to allow watching an array of outputs ([#2262](https://github.com/rollup/rollup/pull/2262))
1780
1781## 0.60.2
1782*2018-06-11*
1783* Permit setting an asset's source in `generateBundle` ([#2256](https://github.com/rollup/rollup/pull/2256))
1784* Add automatic linting ([#2242](https://github.com/rollup/rollup/pull/2242))
1785
1786## 0.60.1
1787*2018-06-07*
1788* Fix plugin regressions ([#2246](https://github.com/rollup/rollup/pull/2246))
1789* Avoid conflicts for large numbers of variables ([#2244](https://github.com/rollup/rollup/pull/2244))
1790
1791## 0.60.0
1792*2018-06-06*
1793* New plugin hooks: transformChunk, buildStart, buildEnd; extended plugin context with warn, error, resolveId, isExternal, emitAsset, setAssetSource and getAssetFileName available to any hook ([#2208](https://github.com/rollup/rollup/pull/2208))
1794* [BREAKING] Deprecate the `legacy` option and thus IE8 support ([#2141](https://github.com/rollup/rollup/pull/2141))
1795* Detect more known extensions and load .mjs without extension ([#2211](https://github.com/rollup/rollup/pull/2211))
1796* Add compact output mode ([#2151](https://github.com/rollup/rollup/pull/2151))
1797* Significantly improve sourcemap generation performance ([#2228](https://github.com/rollup/rollup/pull/2228))
1798* Enable naming SystemJS modules ([#2028](https://github.com/rollup/rollup/pull/2028))
1799* Do not use alternate screen if clearScreen is set in watch mode ([#2125](https://github.com/rollup/rollup/pull/2125))
1800* Allow object input form for code-splitting in watch mode ([#2217](https://github.com/rollup/rollup/pull/2217))
1801* Track reassignments of methods of exports from outside ([#2240](https://github.com/rollup/rollup/pull/2240))
1802* Preserve id of default exported functions and classes ([#2234](https://github.com/rollup/rollup/pull/2234))
1803* Add semicolons after default exports ([#2209](https://github.com/rollup/rollup/pull/2209))
1804* Fix build problems on Windows ([#2232](https://github.com/rollup/rollup/pull/2232))
1805* Display install size in readme ([#2196](https://github.com/rollup/rollup/pull/2196))
1806* Improve preserve modules test ([#2236](https://github.com/rollup/rollup/pull/2236))
1807
1808## 0.59.4
1809*2018-05-28*
1810* Fix performance regression when many return statements are used ([#2218](https://github.com/rollup/rollup/pull/2218))
1811
1812## 0.59.3
1813*2018-05-24*
1814* Fix reassignment tracking for constructor parameters ([#2214](https://github.com/rollup/rollup/pull/2214))
1815
1816## 0.59.2
1817*2018-05-21*
1818* Fix reassignment tracking in for-in loops ([#2205](https://github.com/rollup/rollup/pull/2205))
1819
1820## 0.59.1
1821*2018-05-16*
1822* Fix infinite recursion when determining literal values of circular structures ([#2193](https://github.com/rollup/rollup/pull/2193))
1823* Fix invalid code when simplifying expressions without spaces ([#2194](https://github.com/rollup/rollup/pull/2194))
1824
1825## 0.59.0
1826*2018-05-15*
1827* Tree-shake statically analysable dynamic conditionals ([#2167](https://github.com/rollup/rollup/pull/2167))
1828* Do not emit empty chunks when code-splitting or empty files when preserving modules ([#2128](https://github.com/rollup/rollup/pull/2128))
1829* Support `import.meta.url` ([#2164](https://github.com/rollup/rollup/pull/2164))
1830* Add `esm` format alias ([#2102](https://github.com/rollup/rollup/pull/2102))
1831* Use alphanumeric base64 characters when deconflicting variables ([#2188](https://github.com/rollup/rollup/pull/2188))
1832* Improve handling of external modules imported as both default and named imports ([#2136](https://github.com/rollup/rollup/pull/2136))
1833* Properly deconflict named imports from other chunks ([#2177](https://github.com/rollup/rollup/pull/2177))
1834* Fix an issue with namespaces containing reexports ([#2157](https://github.com/rollup/rollup/pull/2157))
1835* Fix an issue with with incorrectly mapped default exports when code-splitting CJS or AMD modules ([#2178](https://github.com/rollup/rollup/pull/2178))
1836* Fix an issue with wrong paths of relative external imports ([#2160](https://github.com/rollup/rollup/pull/2160))
1837* Fix an issue when using default exports and `interop: false` ([#2149](https://github.com/rollup/rollup/pull/2149))
1838* Fix in issue with invalid syntax in SystemJS output ([#2187](https://github.com/rollup/rollup/pull/2187))
1839* Fix an issue when tree-shaking call expressions and reassigned variables ([#2186](https://github.com/rollup/rollup/pull/2186))
1840* Fix file paths in source maps ([#2161](https://github.com/rollup/rollup/pull/2161))
1841* Fix wrong file name in error message ([#2137](https://github.com/rollup/rollup/pull/2137))
1842* Always use npm 5 on CI ([#2185](https://github.com/rollup/rollup/pull/2185))
1843
1844## 0.58.2
1845*2018-04-23*
1846* Fix rendering of certain statically resolvable if statements ([#2146](https://github.com/rollup/rollup/pull/2146))
1847
1848## 0.58.1
1849*2018-04-18*
1850* Fix comment detection ([#2129](https://github.com/rollup/rollup/pull/2129))
1851
1852## 0.58.0
1853*2018-04-16*
1854* Support individual chunk names with optional content hashes ([#2068](https://github.com/rollup/rollup/pull/2068))
1855* Support manually created chunks ([#2084](https://github.com/rollup/rollup/pull/2084))
1856* Automatically import deep dependencies when code splitting for better performance ([#2073](https://github.com/rollup/rollup/pull/2073))
1857* Automatically minify internal export/import names for esm and system output ([#2087](https://github.com/rollup/rollup/pull/2087))
1858* Add option to automatically merge small chunks ([#2090](https://github.com/rollup/rollup/pull/2090))
1859* Significantly improve tree-shaking performance ([#2119](https://github.com/rollup/rollup/pull/2119))
1860* Enable tree-shaking for logical expressions ([#2098](https://github.com/rollup/rollup/pull/2098))
1861* Rework external types and reduce type related dependencies ([#2108](https://github.com/rollup/rollup/pull/2108))
1862* Support parallel dependency resolution ([#2116](https://github.com/rollup/rollup/pull/2116))
1863* Improve deprecation handling ([#2076](https://github.com/rollup/rollup/pull/2076))
1864* Enable `--perf` timings in watch mode ([#2065](https://github.com/rollup/rollup/pull/2065))
1865* Improve performance timers ([#2111](https://github.com/rollup/rollup/pull/2111))
1866* Improve error handling for plugins ([#2100](https://github.com/rollup/rollup/pull/2100))
1867* Improve error when using `--dir` in a single file build ([#2123](https://github.com/rollup/rollup/pull/2123))
1868* Do not warn for external imports that are unused due to tree-shaking ([#2124](https://github.com/rollup/rollup/pull/2124))
1869* Update mixed export warning message ([#2107](https://github.com/rollup/rollup/pull/2107))
1870* Remove duplicate badges from readme ([#2083](https://github.com/rollup/rollup/pull/2083))
1871* Update readme examples ([#2086](https://github.com/rollup/rollup/pull/2086))
1872
1873## 0.57.1
1874*2018-03-17*
1875* Improve sourcemap generation performance ([#2062](https://github.com/rollup/rollup/pull/2062))
1876* Add reserved config option namespace and improve CLI interface ([#2063](https://github.com/rollup/rollup/pull/2063))
1877* Fix issue with default exported function and class expressions ([#2059](https://github.com/rollup/rollup/pull/2059))
1878* Replace `forEach` with faster `for` loops in some places ([#2064](https://github.com/rollup/rollup/pull/2064))
1879
1880## 0.57.0
1881*2018-03-15*
1882* Add option to preserve the module structure instead of bundling ([#1922](https://github.com/rollup/rollup/pull/1922))
1883* Enable watch mode when code-splitting ([#2035](https://github.com/rollup/rollup/pull/2035))
1884* Optionally pass CLI commands to config file ([#1926](https://github.com/rollup/rollup/pull/1926))
1885* Option to add correct `.toString` tags to namespaces ([#2041](https://github.com/rollup/rollup/pull/2041))
1886* Option and scripts to display performance timings ([#2045](https://github.com/rollup/rollup/pull/2045))
1887* Fixes for exported or early accessed namespaces + improved namespace indentation ([#2041](https://github.com/rollup/rollup/pull/2041))
1888* Include missing TypeScript dependencies ([#1965](https://github.com/rollup/rollup/pull/1965))
1889* Add #_PURE annotation to frozen namespaces ([#2044](https://github.com/rollup/rollup/pull/2044))
1890* Improve sourcemap and tree-shaking performance ([#2052](https://github.com/rollup/rollup/pull/2052))
1891* Inline sourcemap lookups and make rollup smaller ([#2055](https://github.com/rollup/rollup/pull/2055))
1892* Use updated magic-string types ([#2057](https://github.com/rollup/rollup/pull/2057))
1893* [BREAKING] Revert class id preservation from #2025 ([#2048](https://github.com/rollup/rollup/pull/2048))
1894* [BREAKING] Refactor missing export plugin hook ([#1987](https://github.com/rollup/rollup/pull/1987))
1895
1896## 0.56.5
1897*2018-03-07*
1898* Preserve ids when deconflicting classes ([#2025](https://github.com/rollup/rollup/pull/2025))
1899* Fix an issue with re-exported namespace imports ([#2034](https://github.com/rollup/rollup/pull/2034))
1900* Prevent an infinite loop when binding member expressions ([#1963](https://github.com/rollup/rollup/pull/1963))
1901* Convert code style via prettier ([#2031](https://github.com/rollup/rollup/pull/2031))
1902* Fix links in documentation ([#2026](https://github.com/rollup/rollup/pull/2026))
1903
1904## 0.56.4
1905*2018-03-05*
1906* Make rollup builds reproducible ([#2024](https://github.com/rollup/rollup/pull/2024))
1907* Improve error handling for source maps ([#2012](https://github.com/rollup/rollup/pull/2012))
1908* Properly handle SystemJS default exports without semicolons ([#2019](https://github.com/rollup/rollup/pull/2019))
1909* Properly handle importing the same variable several times when code-splitting ([#2020](https://github.com/rollup/rollup/pull/2020))
1910* Improve re-export tracing ([#2021](https://github.com/rollup/rollup/pull/2021))
1911* Apply "prettier" on commit ([#2017](https://github.com/rollup/rollup/pull/2017))
1912* Automatically clean up outdated tests ([#2009](https://github.com/rollup/rollup/pull/2009))
1913* Add SystemJS output to form tests ([#2022](https://github.com/rollup/rollup/pull/2022))
1914* Improve internal build configuration ([#2016](https://github.com/rollup/rollup/pull/2016))
1915
1916## 0.56.3
1917*2018-02-25*
1918* Fix issues around default exports and module facades ([#2001](https://github.com/rollup/rollup/pull/2001))
1919* Improve and fix internal chunk interface ([#1994](https://github.com/rollup/rollup/pull/1994))
1920* Fix superfluous semicolons added after declarations ([#1999](https://github.com/rollup/rollup/pull/1999))
1921* Improve code-splitting tests ([#1990](https://github.com/rollup/rollup/pull/1990))
1922
1923## 0.56.2
1924*2018-02-19*
1925* Fix handling of reassigned default exports ([#1975](https://github.com/rollup/rollup/pull/1975))
1926* Fix handling of renamed exports in entry points ([#1977](https://github.com/rollup/rollup/pull/1977))
1927* Update internal TypeScript version ([#1980](https://github.com/rollup/rollup/pull/1980))
1928* Omit compiled source files from published types ([#1981](https://github.com/rollup/rollup/pull/1981))
1929* Fix example in readme file ([#1984](https://github.com/rollup/rollup/pull/1984))
1930* Fix non-replaced dynamic imports in non-ESM output ([#1985](https://github.com/rollup/rollup/pull/1985))
1931
1932## 0.56.1
1933*2018-02-16*
1934* Fix regression when rendering switch statements ([#1971](https://github.com/rollup/rollup/pull/1971))
1935
1936## 0.56.0
1937*2018-02-15*
1938* Update to ECMAScript 2018 ([#1953](https://github.com/rollup/rollup/pull/1953))
1939* Rework tree-shaking rendering algorithm ([#1949](https://github.com/rollup/rollup/pull/1949))
1940* Tree-shake pure prototype calls on literals ([#1916](https://github.com/rollup/rollup/pull/1916))
1941* Expose AST parser to plugins ([#1945](https://github.com/rollup/rollup/pull/1945))
1942* Fix namespace re-export deconflicting ([#1960](https://github.com/rollup/rollup/pull/1960))
1943* Allow globals to be re-exported ([#1959](https://github.com/rollup/rollup/pull/1959))
1944* Fix internal performance timers ([#1966](https://github.com/rollup/rollup/pull/1966))
1945
1946## 0.55.5
1947*2018-02-10*
1948* Remove OpenCollective dependency ([#1915](https://github.com/rollup/rollup/pull/1915))
1949
1950## 0.55.4
1951*2018-02-09*
1952* Improve name deconflicting of external variables ([#1930](https://github.com/rollup/rollup/pull/1930))
1953* Improve re-export handling ([#1947](https://github.com/rollup/rollup/pull/1947))
1954* Mark preserveSymlinks option as optional ([#1939](https://github.com/rollup/rollup/pull/1939))
1955* Enable code-splitting tests to check directory structures ([#1924](https://github.com/rollup/rollup/pull/1924))
1956* Improve TypeScript definition test ([#1954](https://github.com/rollup/rollup/pull/1954))
1957
1958## 0.55.3
1959*2018-02-01*
1960* Remove OpenCollective dependency ([#1915](https://github.com/rollup/rollup/pull/1915))
1961
1962## 0.55.2
1963*2018-02-01*
1964* Add option to not follow symlinks ([#1819](https://github.com/rollup/rollup/pull/1819))
1965* Fix crash in windows shell ([#1928](https://github.com/rollup/rollup/pull/1928))
1966* Fix and test for external TypeScript errors ([#1903](https://github.com/rollup/rollup/pull/1903))
1967* Activate OpenCollective ([#1915](https://github.com/rollup/rollup/pull/1915))
1968* Optimize CI scripts ([#1921](https://github.com/rollup/rollup/pull/1921))
1969
1970## 0.55.1
1971*2018-01-26*
1972* Improve dynamic import workflow ([#1907](https://github.com/rollup/rollup/pull/1907))
1973* Properly handle multiple dynamic imports of the same module ([#1911](https://github.com/rollup/rollup/pull/1911))
1974* Fix import specifier deshadowing ([#1912](https://github.com/rollup/rollup/pull/1912))
1975* Allow plugin load hook to return an empty string ([#1908](https://github.com/rollup/rollup/pull/1908))
1976* Let onwarn handler accept strings ([#1905](https://github.com/rollup/rollup/pull/1905))
1977
1978## 0.55.0
1979*2018-01-23*
1980* Support code splitting ([#1841](https://github.com/rollup/rollup/pull/1841))
1981* Support SystemJS as output format ([#1897](https://github.com/rollup/rollup/pull/1897))
1982* Allow injecting acorn plugins ([#1857](https://github.com/rollup/rollup/pull/1857))
1983* Add `missingExport` plugin hook ([#1845](https://github.com/rollup/rollup/pull/1845))
1984* No longer parse config files via bublé ([#1899](https://github.com/rollup/rollup/pull/1899))
1985* Use externally maintained dynamic import acorn plugin ([#1891](https://github.com/rollup/rollup/pull/1891))
1986* Fix an error message ([#1886](https://github.com/rollup/rollup/pull/1886))
1987* Refactor internal rendering options ([#1900](https://github.com/rollup/rollup/pull/1900))
1988* Extract internal path resolution ([#1879](https://github.com/rollup/rollup/pull/1879))
1989* Extract internal bundle option handling ([#1880](https://github.com/rollup/rollup/pull/1880))
1990* Add import description type ([#1884](https://github.com/rollup/rollup/pull/1884))
1991* Clean up watch options types ([#1860](https://github.com/rollup/rollup/pull/1860))
1992* Clean up some tests ([#1888](https://github.com/rollup/rollup/pull/1888))
1993
1994## 0.54.1
1995*2018-01-17*
1996* Fix TypeScript errors in emitted type definitions ([#1871](https://github.com/rollup/rollup/pull/1871))
1997
1998## 0.54.0
1999*2018-01-12*
2000* Automatically inline locally resolvable dynamic imports ([#1816](https://github.com/rollup/rollup/pull/1816))
2001* Preserve directives in function bodies ([#1856](https://github.com/rollup/rollup/pull/1856))
2002* Refactor an error notification ([#1846](https://github.com/rollup/rollup/pull/1846))
2003* Refactor a wrong import ([#1863](https://github.com/rollup/rollup/pull/1863))
2004* Improve emitted TypeScript definitions ([#1864](https://github.com/rollup/rollup/pull/1864))
2005* Refactor unused import ([#1866](https://github.com/rollup/rollup/pull/1866))
2006
2007## 0.53.4
2008*2018-01-10*
2009* More type cleanup ([#1858](https://github.com/rollup/rollup/pull/1858))
2010* Use chalks internal helper to detect if colors should be used ([#1853](https://github.com/rollup/rollup/pull/1853))
2011* Refactor entity handling to use interfaces ([#1840](https://github.com/rollup/rollup/pull/1840))
2012* Use immutable.js internal types ([#1844](https://github.com/rollup/rollup/pull/1844))
2013* Ship `TypeScript` declaration files ([#1837](https://github.com/rollup/rollup/pull/1837))
2014
2015## 0.53.3
2016*2018-01-02*
2017* Use correct name when re-exporting from external modules ([#1794](https://github.com/rollup/rollup/pull/1794))
2018* Disable warnings when `resolveId` returns false ([#1825](https://github.com/rollup/rollup/pull/1825))
2019
2020## 0.53.2
2021*2017-12-30*
2022* Properly handle output arrays in the JavaScript API ([#1827](https://github.com/rollup/rollup/pull/1827))
2023
2024## 0.53.1
2025*2017-12-28*
2026* Properly deprecate more config options ([#1812](https://github.com/rollup/rollup/pull/1812))
2027* Pass output options to `transformBundle` plugin hook ([#1813](https://github.com/rollup/rollup/pull/1813))
2028
2029## 0.53.0
2030*2017-12-22*
2031* Experimental dynamic import support ([#1790](https://github.com/rollup/rollup/pull/1790))
2032* Unify config validation ([#1805](https://github.com/rollup/rollup/pull/1805))
2033
2034## 0.52.3
2035*2017-12-19*
2036* Properly hoist default exported functions in more situations ([#1799](https://github.com/rollup/rollup/pull/1799))
2037* Allow plugin transformations to not overwrite source maps by returning null ([#1797](https://github.com/rollup/rollup/pull/1797))
2038* Provide more parameters to "external" handler ([#1792](https://github.com/rollup/rollup/pull/1792))
2039
2040## 0.52.2
2041*2017-12-15*
2042* No longer ignore side-effects in JSON.parse and JSON.stringify ([#1785](https://github.com/rollup/rollup/pull/1785))
2043* Updated links in warnings ([#1776](https://github.com/rollup/rollup/pull/1776))
2044* No longer prevent self-imports ([#1777](https://github.com/rollup/rollup/pull/1777))
2045* Properly hoist default exported functions ([#1787](https://github.com/rollup/rollup/pull/1787))
2046* Prevent corruption when re-exporting default exports ([#1765](https://github.com/rollup/rollup/pull/1765))
2047
2048## 0.52.1
2049*2017-12-05*
2050* Improve deprecation warnings ([#1765](https://github.com/rollup/rollup/pull/1765))
2051* Properly use stdin ([#1774](https://github.com/rollup/rollup/pull/1774))
2052* Let --environment be used multiple times ([#1768](https://github.com/rollup/rollup/pull/1768))
2053* Always transpile config files ([#1759](https://github.com/rollup/rollup/pull/1759))
2054* Respect globals option in headers of UMD and IIFE files ([#1747](https://github.com/rollup/rollup/pull/1747))
2055
2056## 0.52.0
2057*2017-11-25*
2058* Accept config as promise ([#1731](https://github.com/rollup/rollup/pull/1731))
2059* Accept promises for intro/outro/banner/footer ([#1253](https://github.com/rollup/rollup/pull/1253))
2060* Option to prevent freezing of namespace imports ([#1696](https://github.com/rollup/rollup/pull/1696))
2061* Option to retain all output in watch mode ([#1688](https://github.com/rollup/rollup/pull/1688))
2062* Options to fine-tune treeshaking ([#1760](https://github.com/rollup/rollup/pull/1760))
2063
2064## 0.51.8
2065*2017-11-19*
2066* Fix speed problems by simplifying treeshaking reassignment handling ([#1740](https://github.com/rollup/rollup/pull/1740))
2067* Update dependencies ([#1742](https://github.com/rollup/rollup/pull/1742))
2068
2069## 0.51.7
2070*2017-11-17*
2071* Keep "this"-context when calling sequence expressions ([#1724](https://github.com/rollup/rollup/pull/1724))
2072
2073## 0.51.6
2074*2017-11-16*
2075* Use sourcemaps to determine error locations ([#1728](https://github.com/rollup/rollup/pull/1728))
2076
2077## 0.51.5
2078*2017-11-11*
2079* Fix regressions with uninitialised conditional expressions ([#1720](https://github.com/rollup/rollup/pull/1720))
2080
2081## 0.51.4
2082*2017-11-11*
2083* Fix regressions preventing builds ([#1725](https://github.com/rollup/rollup/pull/1725))
2084
2085## 0.51.3
2086*2017-11-10*
2087* Fix regression when treeshaking sequence expressions ([#1717](https://github.com/rollup/rollup/pull/1717))
2088
2089## 0.51.2
2090*2017-11-09*
2091* Fix treeshaking regression when labels are used inside functions ([#1712](https://github.com/rollup/rollup/pull/1712))
2092
2093## 0.51.1
2094*2017-11-08*
2095* Fix an issue with empty return statements ([#1704](https://github.com/rollup/rollup/pull/1704))
2096
2097## 0.51.0
2098*2017-11-08*
2099* Massive improvements to the treeshaking algorithm ([#1667](https://github.com/rollup/rollup/pull/1667))
2100
2101## 0.50.1
2102*2017-11-08*
2103* Fix treeshaking regression ([#1695](https://github.com/rollup/rollup/pull/1695))
2104* Treeshaking improvements ([#1650](https://github.com/rollup/rollup/pull/1650))
2105* Enable installation from Github ([#1670](https://github.com/rollup/rollup/pull/1670))
2106* Update documentation ([#1660](https://github.com/rollup/rollup/pull/1660))
2107
2108## 0.50.0
2109*2017-09-16*
2110* Many treeshaking improvements ([#1624](https://github.com/rollup/rollup/pull/1624))
2111* Show finish time in watch mode ([#1620](https://github.com/rollup/rollup/pull/1620))
2112
2113## 0.49.3
2114*2017-09-08*
2115* Respect `watch` options ([#1596](https://github.com/rollup/rollup/issues/1596))
2116* Fix treeshaking regressions ([#1604](https://github.com/rollup/rollup/pull/1604))
2117* Allow `-o` to work with `output.format` ([#1606](https://github.com/rollup/rollup/pull/1606))
2118
2119## 0.49.2
2120*2017-08-29*
2121* Fix treeshaking regressions ([#1591](https://github.com/rollup/rollup/pull/1591))
2122
2123## 0.49.1
2124*2017-08-28*
2125* Fix treeshaking regressions ([#1586](https://github.com/rollup/rollup/pull/1586))
2126
2127## 0.49.0
2128*2017-08-27*
2129* Completely update the treeshaking algorithm ([#1582](https://github.com/rollup/rollup/pull/1582))
2130* Only flip screen buffer if appropriate ([#1574](https://github.com/rollup/rollup/pull/1574))
2131* Guard against two instances creating the same dir ([#1576](https://github.com/rollup/rollup/pull/1576))
2132
2133## 0.48.2
2134
2135* Paths is an output option ([#1569](https://github.com/rollup/rollup/pull/1569))
2136
2137## 0.48.1
2138
2139* Print deprecation warnings in watch mode, and fix options when watcher restarts ([#1568](https://github.com/rollup/rollup/pull/1568))
2140
2141## 0.48.0
2142
2143* Numerous changes to the `options` object and CLI arguments ([#1479](https://github.com/rollup/rollup/issues/1479)). See [this gist](https://gist.github.com/Rich-Harris/d472c50732dab03efeb37472b08a3f32) for a rundown.
2144
2145## 0.47.6
2146
2147* Set `process.env.ROLLUP_WATCH` *before* loading config file
2148
2149## 0.47.5
2150
2151* Fix broken multi-bundle configs with `rollup.watch` ([#1532](https://github.com/rollup/rollup/issues/1532))
2152
2153## 0.47.4
2154
2155* Delete cached config file before reloading in watch mode
2156
2157## 0.47.3
2158
2159* Deshadow aliased imports ([#1550](https://github.com/rollup/rollup/issues/1550))
2160
2161## 0.47.2
2162
2163* Rebuild with dependency that npm randomly deleted
2164
2165## 0.47.1
2166
2167* Ignore external namespace imports when deshadowing ([#1547](https://github.com/rollup/rollup/issues/1547))
2168
2169## 0.47.0
2170
2171* Watch config file, restart `rollup.watch` on change ([#1535](https://github.com/rollup/rollup/issues/1535))
2172* Correctly render `export { foo } from` declarations in `es` output ([#1543](https://github.com/rollup/rollup/pull/1543))
2173* Reinstate missing `rollup.VERSION`
2174
2175## 0.46.3
2176
2177* init for/for-of loop section head with correct scopes ([#1538](https://github.com/rollup/rollup/issues/1538), [#1539](https://github.com/rollup/rollup/issues/1539))
2178* Fix namespace imports and re-exports in `es` output ([#1511](https://github.com/rollup/rollup/issues/1511))
2179* Deshadow indirectly imported namespaces ([#1488](https://github.com/rollup/rollup/issues/1488), [#1505](https://github.com/rollup/rollup/issues/1505))
2180
2181## 0.46.2
2182
2183* Pass options to `bundle.write` correctly in `rollup.watch` ([#1533](https://github.com/rollup/rollup/issues/1533))
2184* init for-in loop section head with correct scopes ([#1480](https://github.com/rollup/rollup/issues/1480))
2185* support `--no-interop` flag ([#1524](https://github.com/rollup/rollup/issues/1524))
2186
2187## 0.46.1
2188
2189* Remove `rollup.watch` from browser build ([#1530](https://github.com/rollup/rollup/issues/1530))
2190* Remove `source-map-support` dependency ([#1528](https://github.com/rollup/rollup/issues/1528))
2191
2192## 0.46.0
2193
2194* `options.format` is now required ([#1491](https://github.com/rollup/rollup/pull/1491))
2195* if `options.format` is `es6`, it will now throw an error (should be `es`) ([#1491](https://github.com/rollup/rollup/pull/1491))
2196* Add experimental `rollup.watch` method, replacing [rollup-watch](https://github.com/rollup/rollup-watch) ([#1491](https://github.com/rollup/rollup/pull/1491))
2197* Batch warnings together in CLI output ([#1491](https://github.com/rollup/rollup/pull/1491))
2198* Clear screen between rebuilds in `--watch` mode ([#1491](https://github.com/rollup/rollup/pull/1491))
2199* `onwarn` function's second argument is the default handler, allowing easier filtering without reimplementing any logic ([#1491](https://github.com/rollup/rollup/pull/1491))
2200* Prevent semi-colon removal after variable declaration that is for loop body ([#1275](https://github.com/rollup/rollup/issues/1275))
2201* Return `exports` for namespaced but non-extended IIFE bundles ([#1492](https://github.com/rollup/rollup/issues/1492))
2202* Fix scoping in switch statements ([#1498](https://github.com/rollup/rollup/pull/1498))
2203* Handle side-effects in tagged template expressions ([#1508](https://github.com/rollup/rollup/pull/1508))
2204* More descriptive error for missing options.format ([#1510](https://github.com/rollup/rollup/pull/1510))
2205* Refactor scope handling ([#1517](https://github.com/rollup/rollup/pull/1517))
2206* Handle failure of a config in multi-config build ([#1513](https://github.com/rollup/rollup/issues/1513))
2207
2208
2209## 0.45.2
2210
2211* Fix interop when import is a string ([#1486](https://github.com/rollup/rollup/issues/1486))
2212* Separate `resolvedIds` from `resolvedExternalIds` ([#1490](https://github.com/rollup/rollup/pull/1490))
2213* Add `--extend` flag to CLI ([#1482](https://github.com/rollup/rollup/pull/1482))
2214
2215## 0.45.1
2216
2217* Remove `weak` from `optionalDependencies` ([#1483](https://github.com/rollup/rollup/issues/1483))
2218
2219## 0.45.0
2220
2221* [BREAKING] `bundle.generate(...)` returns a Promise, so that `transformBundle` plugin hooks can be asynchronous ([#1474](https://github.com/rollup/rollup/issues/1474))
2222
2223## 0.44.0
2224
2225* [BREAKING] Don't extend existing globals, unless `options.extend` is true ([#827](https://github.com/rollup/rollup/issues/827))
2226* Fix handling of catch clause parameters ([#1462](https://github.com/rollup/rollup/issues/1462))
2227
2228## 0.43.1
2229
2230* Fix memory leak on incremental rebuilds ([#883](https://github.com/rollup/rollup/issues/883))
2231* Allow `this.warn` and `this.error` to accept a `{line, column}` object as an alternative to a character index ([#1265](https://github.com/rollup/rollup/issues/1265))
2232* Print more useful error if entry module is 'external' ([#1264](https://github.com/rollup/rollup/issues/1264))
2233* Catch errors in `bundle.generate` options ([#1463](https://github.com/rollup/rollup/pull/1463))
2234* Fix magic-string deprecation warning ([#1445](https://github.com/rollup/rollup/pull/1445))
2235
2236## 0.43.0
2237
2238* Allow config files to import JSON ([#1426](https://github.com/rollup/rollup/issues/1426))
2239* Allow undefined imports in interop block ([#1341](https://github.com/rollup/rollup/issues/1341))
2240* Add `process.env.ROLLUP_WATCH = 'true'` in watch mode ([#1429](https://github.com/rollup/rollup/issues/1429))
2241* Add `pureExternalModules` option ([#1352](https://github.com/rollup/rollup/issues/1352))
2242* Allow plugins to specify `options.entry` ([#1270](https://github.com/rollup/rollup/issues/1270))
2243* Update dependencies
2244
2245## 0.42.0
2246
2247* Deprecate `options.moduleId` in favour of `options.amd.id` ([#1365](https://github.com/rollup/rollup/pull/1365))
2248* Add `options.amd.define` option to specify name of AMD `define` function ([#1365](https://github.com/rollup/rollup/pull/1365))
2249* Fix incorrect class removal with `treeshake: false` ([#1375](https://github.com/rollup/rollup/pull/1375))
2250* Deconflict module exports imported as namespaces ([#1384](https://github.com/rollup/rollup/issues/1384))
2251* Handle bare self-imports ([#1274](https://github.com/rollup/rollup/issues/1274))
2252* Allow config file to export an array of multiple configs ([#1389](https://github.com/rollup/rollup/pull/1389))
2253* Handle exponentiation operator, and fail gracefully on unknown operators ([#1416](https://github.com/rollup/rollup/issues/1416))
2254* Add `watch` option ([#1424](https://github.com/rollup/rollup/pull/1424))
2255
2256## 0.41.6
2257
2258* Preserve `originalSourceMap` on incremental rebuilds for loaders with sourcemaps ([#1336](https://github.com/rollup/rollup/issues/1336))
2259
2260## 0.41.5
2261
2262* Wrap ternary consequent/alternate sequences in parens ([#1273](https://github.com/rollup/rollup/issues/1273))
2263* Fix erroneous warning on multiple `export * from` declarations with defaults ([#1278](https://github.com/rollup/rollup/issues/1278))
2264* Prevent variable conflicts with `treeshake: false` ([#1268](https://github.com/rollup/rollup/issues/1268))
2265* Allow missing `source` when collapsing sourcemaps ([#1254](https://github.com/rollup/rollup/issues/1254))
2266* Allow plugins to log with strings ([#1316](https://github.com/rollup/rollup/pull/1316))
2267
2268## 0.41.4
2269
2270* Fix cases of multiple `export * from 'external'` declarations ([#1252](https://github.com/rollup/rollup/issues/1252))
2271* Fix 'TODO' error message ([#1257](https://github.com/rollup/rollup/issues/1257))
2272
2273## 0.41.3
2274
2275* Don't treat `this.foo` as possible namespace ([#1258](https://github.com/rollup/rollup/issues/1258))
2276
2277## 0.41.2
2278
2279* Optimize `namespace['foo']` references ([#1240](https://github.com/rollup/rollup/pull/1240))
2280
2281## 0.41.1
2282
2283* Include `new` expressions where callee is a class with side-effects ([#980](https://github.com/rollup/rollup/issues/980) [#1233](https://github.com/rollup/rollup/issues/1233))
2284
2285## 0.41.0
2286
2287* Add `this.warn(...)` and `this.error(...)` methods to plugin `transform` hook contexts ([#1140](https://github.com/rollup/rollup/issues/1140))
2288* `throw` always considered to be a side effect ([#1227](https://github.com/rollup/rollup/pull/1227))
2289
2290## 0.40.2
2291
2292* Add `file` property to sourcemaps for bundles with plugins ([#986](https://github.com/rollup/rollup/issues/986))
2293* Don't require globals for empty imports ([#1217](https://github.com/rollup/rollup/issues/1217))
2294
2295## 0.40.1
2296
2297* Allow missing space between `export default` and declaration ([#1218](https://github.com/rollup/rollup/pull/1218))
2298
2299## 0.40.0
2300
2301* [BREAKING] Better, more consistent error logging ([#1212](https://github.com/rollup/rollup/pull/1212))
2302* Don't use colours and emojis for non-TTY stderr ([#1201](https://github.com/rollup/rollup/issues/1201))
2303
2304## 0.39.2
2305
2306* Prevent mutation of cached ASTs (fixes stack overflow with rollup-watch) ([#1205](https://github.com/rollup/rollup/pull/1205))
2307
2308## 0.39.1
2309
2310* Ignore `var` initialisers in dead branches ([#1198](https://github.com/rollup/rollup/issues/1198))
2311
2312## 0.39.0
2313
2314* [BREAKING] Warnings are objects, rather than strings ([#1194](https://github.com/rollup/rollup/issues/1194))
2315
2316## 0.38.3
2317
2318* More informative warning for implicit external dependencies ([#1051](https://github.com/rollup/rollup/issues/1051))
2319* Warn when creating browser bundle with external dependencies on Node built-ins ([#1051](https://github.com/rollup/rollup/issues/1051))
2320* Statically analyse LogicalExpression nodes, for better dead code removal ([#1061](https://github.com/rollup/rollup/issues/1061))
2321
2322## 0.38.2
2323
2324* Preserve `var` declarations in dead branches ([#997](https://github.com/rollup/rollup/issues/997))
2325* Warn if exporting a call expression that looks like a function declaration ([#1011](https://github.com/rollup/rollup/issues/1011))
2326* Wrap function expressions in parentheses if necessary ([#1011](https://github.com/rollup/rollup/issues/1011))
2327
2328## 0.38.1
2329
2330* Fix sourcemap comment removal ([#1104](https://github.com/rollup/rollup/issues/1104))
2331* Warn if empty bundle is generated ([#444](https://github.com/rollup/rollup/issues/444))
2332* Support ES2017 syntax ([#492](https://github.com/rollup/rollup/issues/492))
2333* Remove unused imports from external modules ([#595](https://github.com/rollup/rollup/issues/595))
2334* Remove unused function and class declarations inside function bodies ([#1108](https://github.com/rollup/rollup/issues/1108), [#1178](https://github.com/rollup/rollup/issues/1178))
2335* Deconflict function expression IDs ([#1176](https://github.com/rollup/rollup/issues/1176))
2336
2337## 0.38.0
2338
2339* [BREAKING] `export { foo as default }` creates live binding ([#1078](https://github.com/rollup/rollup/issues/1078))
2340* Prevent sourceMappingURL removal edge case ([#988](https://github.com/rollup/rollup/issues/988))
2341* Bind function expression IDs to the correct scope ([#1083](https://github.com/rollup/rollup/issues/1083))
2342* Correctly deshadow destructured parameters with assignments ([#1008](https://github.com/rollup/rollup/issues/1008))
2343
2344## 0.37.2
2345
2346* Remove unused `new` expressions without side-effects ([#179](https://github.com/rollup/rollup/issues/179))
2347* Only remove valid sourceMappingURL comments ([#1132](https://github.com/rollup/rollup/issues/1132))
2348* Ensure blocks containing activated `var` declarations are included in output ([#1113](https://github.com/rollup/rollup/issues/1113))
2349* Support plugin outros ([#1116](https://github.com/rollup/rollup/issues/1116))
2350
2351## 0.37.1
2352
2353* Follow symlinks ([#447](https://github.com/rollup/rollup/issues/447))
2354* Fix tree-shaking of recursive functions and other cases ([#1120](https://github.com/rollup/rollup/issues/1120), [#1142](https://github.com/rollup/rollup/issues/1142))
2355* Support module names that require quotes ([#582](https://github.com/rollup/rollup/issues/582), [#584](https://github.com/rollup/rollup/issues/584))
2356* Fix [#957](https://github.com/rollup/rollup/issues/957)
2357
2358## 0.37.0
2359
2360* [BREAKING] Default exports are not included in reified namespaces ([#1028](https://github.com/rollup/rollup/issues/1028))
2361* Parentheses do not defeat tree-shaking ([#1101](https://github.com/rollup/rollup/issues/1101), [#1128](https://github.com/rollup/rollup/issues/1128))
2362* More `legacy` fixes: do not create getters ([#1069](https://github.com/rollup/rollup/pull/1069)), do not include `__esModule` ([#1068](https://github.com/rollup/rollup/pull/1068)), quote reserved property names ([#1057](https://github.com/rollup/rollup/pull/1057))
2363* Fix missing namespace member warnings ([#1045](https://github.com/rollup/rollup/issues/1045))
2364* Fix TypeError in arrow function without braces returning a function ([#1062](https://github.com/rollup/rollup/pull/1062))
2365
2366## 0.36.4
2367
2368* Only depend on program-level call expressions ([#977](https://github.com/rollup/rollup/issues/977))
2369
2370## 0.36.3
2371
2372* Add `legacy` option for IE8 support ([#989](https://github.com/rollup/rollup/pull/989))
2373
2374## 0.36.2
2375
2376* Insert semicolons where necessary to fix broken code ([#1004](https://github.com/rollup/rollup/issues/1004))
2377* Include module ID and location when warning about top-level `this` ([#1012](https://github.com/rollup/rollup/pull/1012))
2378* More informative error for missing exports ([#1033](https://github.com/rollup/rollup/issues/1033))
2379* `options.moduleContext` for per-module context overrides ([#1023](https://github.com/rollup/rollup/pull/1023))
2380
2381## 0.36.1
2382
2383* Include naked block statements ([#981](https://github.com/rollup/rollup/issues/981))
2384* Correctly include falsy alternate statements in optimised if blocks ([#973](https://github.com/rollup/rollup/issues/973))
2385* Prevent omission of default exports that are only used by the exporting module ([#967](https://github.com/rollup/rollup/pull/967))
2386* Prevent warning on `auto` exports with ES output ([#966](https://github.com/rollup/rollup/pull/966))
2387
2388## 0.36.0
2389
2390* `export { foo as default }` no longer creates a live binding ([#860](https://github.com/rollup/rollup/issues/860))
2391
2392## 0.35.15
2393
2394* Warn on missing unused imports in deshadowing phase ([#928](https://github.com/rollup/rollup/issues/928))
2395* Always add a newline to the end of bundles ([#958](https://github.com/rollup/rollup/issues/958))
2396
2397## 0.35.14
2398
2399* Include all parent statements of expression with effects, up to function boundary ([#930](https://github.com/rollup/rollup/issues/930))
2400
2401## 0.35.13
2402
2403* Include superclasses when including their subclasses ([#932](https://github.com/rollup/rollup/issues/932))
2404
2405## 0.35.12
2406
2407* Add `interop: false` option to disable unwrapping of external imports ([#939](https://github.com/rollup/rollup/issues/939))
2408
2409## 0.35.11
2410
2411* Deconflict reified namespaces with other declarations ([#910](https://github.com/rollup/rollup/issues/910))
2412
2413## 0.35.10
2414
2415* Only remove EmptyStatement nodes directly inside blocks ([#913](https://github.com/rollup/rollup/issues/931))
2416
2417## 0.35.9
2418
2419* Support Node 0.12 ([#909](https://github.com/rollup/rollup/issues/909))
2420
2421## 0.35.8
2422
2423* Correctly deshadow re-assigned module functions ([#910](https://github.com/rollup/rollup/issues/910))
2424
2425## 0.35.7
2426
2427* Refactor `flushTime.js` ([#922](https://github.com/rollup/rollup/pull/922))
2428
2429## 0.35.6
2430
2431* Fix browser build
2432
2433## 0.35.5
2434
2435* Allow empty for loop heads ([#919](https://github.com/rollup/rollup/issues/919))
2436
2437## 0.35.4
2438
2439* Preserve effects in for-of and for-in loops ([#870](https://github.com/rollup/rollup/issues/870))
2440* Remove empty statements ([#918](https://github.com/rollup/rollup/pull/918))
2441
2442## 0.35.3
2443
2444* Render identifiers inside template literals
2445
2446## 0.35.2
2447
2448* Fix broken build caused by out of date locally installed dependencies
2449
2450## 0.35.1
2451
2452* Rewrite deconflicted class identifiers ([#915](https://github.com/rollup/rollup/pull/915))
2453* Include `dependencies` in `bundle.modules` objects ([#903](https://github.com/rollup/rollup/issues/903))
2454* Update to Acorn 4 ([#914](https://github.com/rollup/rollup/pull/914))
2455
2456## 0.35.0
2457
2458* Rewrite analysis/tree-shaking code ([#902](https://github.com/rollup/rollup/pull/902))
2459* Include conditional mutations of global objects ([#901](https://github.com/rollup/rollup/issues/901))
2460* Only reify namespaces if necessary ([#898](https://github.com/rollup/rollup/issues/898))
2461* Track mutations of aliased globals ([#893](https://github.com/rollup/rollup/issues/893))
2462* Include duplicated var declarations ([#716](https://github.com/rollup/rollup/issues/716))
2463
2464## 0.34.13
2465
2466* Pass `{ format }` through to `transformBundle` ([#867](https://github.com/rollup/rollup/issues/867))
2467
2468## 0.34.12
2469
2470* Fix `rollup --watch` ([#887](https://github.com/rollup/rollup/issues/887))
2471* Case-sensitive paths ([#862](https://github.com/rollup/rollup/issues/862))
2472
2473## 0.34.11
2474
2475* Prevent leaky state when `bundle` is reused ([#875](https://github.com/rollup/rollup/issues/875))
2476* Ensure `intro` appears before interop block ([#880](https://github.com/rollup/rollup/issues/880))
2477
2478## 0.34.10
2479
2480* Allow custom `options.context` to replace top-level `this` ([#851](https://github.com/rollup/rollup/issues/851))
2481* Fix `noConflict` when used via `rollup --config` ([#846](https://github.com/rollup/rollup/issues/846))
2482* Place `outro` block *after* export block ([#852](https://github.com/rollup/rollup/issues/852))
2483
2484## 0.34.9
2485
2486* Disable indentation by default, for faster bundle generation ([#812](https://github.com/rollup/rollup/pull/812))
2487* More helpful error on missing entry file ([#802](https://github.com/rollup/rollup/issues/802))
2488* Preserve comments before import declarations ([#815](https://github.com/rollup/rollup/pull/815))
2489
2490## 0.34.8
2491
2492* Wrap UMD factory function in parens to avoid lazy parsing ([#774](https://github.com/rollup/rollup/pull/774))
2493
2494## 0.34.7
2495
2496* Leave it up to resolveId to normalize the entry path ([#835](https://github.com/rollup/rollup/pull/835))
2497* Cache decoded mappings ([#834](https://github.com/rollup/rollup/pull/834))
2498
2499## 0.34.5
2500
2501* Fix circular export ([#813](https://github.com/rollup/rollup/issues/813))
2502
2503## 0.34.4
2504
2505* Module render performance tweak ([#823](https://github.com/rollup/rollup/pull/823))
2506
2507## 0.34.3
2508
2509* Avoid infinite recursion in `Bundle.sort()` ([#800](https://github.com/rollup/rollup/pull/800))
2510
2511## 0.34.2
2512
2513* resolveId calls are cached now to improve incremental build
2514* Fixed error message recursion in plugins
2515
2516## 0.34.1
2517
2518* Support `paths` config ([#754](https://github.com/rollup/rollup/issues/754))
2519* Allow `export *` from external module, internally
2520
2521## 0.34.0
2522
2523* Use resolved IDs for relative imports that are also external modules, to allow `options.globals` to work with them ([#763](https://github.com/rollup/rollup/issues/763))
2524* Ensure reassigned exports are declared in an ES bundle, and remove empty `exports.foo;` statements ([#755](https://github.com/rollup/rollup/issues/755))
2525* Add newline after sourcemap comment ([#756](https://github.com/rollup/rollup/issues/756))
2526
2527## 0.33.2
2528
2529* Add `bundle` as second argument to `ongenerate` and `onwrite` hooks ([#773](https://github.com/rollup/rollup/pull/773))
2530* Warn on top-level `this` ([#770](https://github.com/rollup/rollup/issues/770))
2531
2532## 0.33.1
2533
2534* Fix `--no-strict` option ([#751](https://github.com/rollup/rollup/pull/751))
2535* Fix Windows edge case with case-sensitive paths ([#760](https://github.com/rollup/rollup/pull/760))
2536
2537## 0.33.0
2538
2539* Downgrade missing transformer sourcemap to a warning, not an error, and print the name of the offending plugin if possible ([#746](https://github.com/rollup/rollup/issues/746))
2540* Warn if same name is re-exported from two modules ([#722](https://github.com/rollup/rollup/issues/722))
2541
2542## 0.32.4
2543
2544* Add `ongenerate` and `onwrite` plugin hooks ([#742](https://github.com/rollup/rollup/pull/742))
2545
2546## 0.32.3
2547
2548* Generated correct sourcemaps with reified namespaces ([#668](https://github.com/rollup/rollup/issues/668))
2549* Exclude plugin helper modules from sourcemaps ([#747](https://github.com/rollup/rollup/pull/747))
2550
2551## 0.32.2
2552
2553* Allow `--globals` to work with `--external` or `options.external` in whatever configuration ([#743](https://github.com/rollup/rollup/issues/743))
2554
2555## 0.32.1
2556
2557* Preserve side-effects to default exports that coincide with used named exports ([#733](https://github.com/rollup/rollup/issues/733))
2558* Support `rollup -c node:pkgname` ([#736](https://github.com/rollup/rollup/issues/736))
2559
2560## 0.32.0
2561
2562* Deprecate `es6` format in favour of `es` ([#468](https://github.com/rollup/rollup/issues/468))
2563* Add correct `jsnext:main` build ([#726](https://github.com/rollup/rollup/pull/726))
2564
2565## 0.31.2
2566
2567* Allow `load` plugins to provide sourcemap ([#715](https://github.com/rollup/rollup/pull/715))
2568* Allow `sourceMapFile` in config options ([#717](https://github.com/rollup/rollup/issues/717))
2569
2570## 0.31.1
2571
2572* Logging for errors emitted by `rollup-watch` ([#712](https://github.com/rollup/rollup/issues/712))
2573
2574## 0.31.0
2575
2576* Rewrite top-level `this` as `undefined` ([#707](https://github.com/rollup/rollup/pull/707))
2577* Pass `options.acorn` to Acorn ([#564](https://github.com/rollup/rollup/issues/564))
2578
2579## 0.30.0
2580
2581* Bundle CLI ([#700](https://github.com/rollup/rollup/issues/700))
2582* Ensure absolute paths are normalised ([#704](https://github.com/rollup/rollup/issues/704))
2583* Allow `rollup --watch` to work with targets
2584
2585## 0.29.1
2586
2587* Merge `target` options with main options ([#701](https://github.com/rollup/rollup/issues/701))
2588* Update magic-string ([#690](https://github.com/rollup/rollup/issues/690))
2589
2590## 0.29.0
2591
2592* `rollup --watch` ([#284](https://github.com/rollup/rollup/issues/284))
2593
2594## 0.28.0
2595
2596* Experimental support for incremental rebuilds ([#658](https://github.com/rollup/rollup/pull/658))
2597
2598## 0.27.1
2599
2600* Ensure names exported from a module are not replaced with reserved words ([#696](https://github.com/rollup/rollup/pull/696))
2601* Revert ([#692](https://github.com/rollup/rollup/pull/692)) – resolved IDs must be strings
2602
2603## 0.27.0
2604
2605* Use native promises instead of `es6-promise` ([#689](https://github.com/rollup/rollup/issues/689))
2606* Support multiple targets in config files ([#655](https://github.com/rollup/rollup/issues/655))
2607* Allow `resolveId` plugin functions to return non-strings ([#692](https://github.com/rollup/rollup/pull/692))
2608
2609## 0.26.7
2610
2611* Distinguish between default and namespace imports of external module ([#637](https://github.com/rollup/rollup/issues/637))
2612* Add `__esModule` property to named exports in AMD, CJS and UMD modes ([#650](https://github.com/rollup/rollup/issues/650))
2613
2614## 0.26.6
2615
2616* Deconflict named imports from external modules in ES bundles ([#659](https://github.com/rollup/rollup/issues/659))
2617* Support `options.preferConst` to generate `const` declarations for exports rather than `var` declarations ([#653](https://github.com/rollup/rollup/issues/653))
2618
2619## 0.26.5
2620
2621* Preserve `debugger` statements ([#664](https://github.com/rollup/rollup/issues/664))
2622* Allow `options.external` to be a function ([#522](https://github.com/rollup/rollup/issues/522))
2623
2624## 0.26.4
2625
2626* Prevent plugin-provided external IDs being normalised ([#630](https://github.com/rollup/rollup/issues/630), [#633](https://github.com/rollup/rollup/issues/633))
2627* Throw if module exports/re-exports the same name twice, or has multiple default exports ([#679](https://github.com/rollup/rollup/issues/679))
2628* Warn about `eval` security issue ([#675]((https://github.com/rollup/rollup/issues/675)))
2629
2630
2631## 0.26.3
2632
2633* Ensure reference is not incorrectly marked as a reassignment ([#648](https://github.com/rollup/rollup/issues/648))
2634
2635## 0.26.2
2636
2637* Sanity check output of `load` hook ([#607](https://github.com/rollup/rollup/issues/607))
2638* Correct scoping for ID class expressions ([#626](https://github.com/rollup/rollup/issues/626))
2639* Warn if named and default exports are used together in auto mode ([#587](https://github.com/rollup/rollup/issues/587))
2640* Allow variable initialisers to be rewritten if necessary ([#632](https://github.com/rollup/rollup/issues/632))
2641* Prevent double `var` with no-treeshake option ([#639](https://github.com/rollup/rollup/pull/639))
2642
2643## 0.26.1
2644
2645* Add `treeshake: false`/`--no-treeshake` option for debugging ([#505](https://github.com/rollup/rollup/issues/505))
2646* Update build process to use Bublé ([#620](https://github.com/rollup/rollup/pull/620))
2647
2648## 0.26.0
2649
2650* Add `noConflict`/`--no-conflict` option for UMD builds ([#580](https://github.com/rollup/rollup/pull/580))
2651* Normalise relative external paths ([#591](https://github.com/rollup/rollup/pull/591))
2652* Report files causing transform errors ([#609](https://github.com/rollup/rollup/pull/609))
2653* Handle sourcemap segments with a single member ([#619](https://github.com/rollup/rollup/pull/619))
2654* Update dependencies
2655
2656## 0.25.8
2657
2658* Unixize entry path ([#586](https://github.com/rollup/rollup/pull/586))
2659
2660## 0.25.7
2661
2662* Expand deshadowed shorthand properties ([#575](https://github.com/rollup/rollup/issues/575))
2663* Allow external files to be non-existent ([#532](https://github.com/rollup/rollup/issues/532))
2664
2665## 0.25.6
2666
2667* Fix a regression introduced by #566 ([#569](https://github.com/rollup/rollup/issues/569))
2668* Prune dead conditional expressions more carefully ([#567](https://github.com/rollup/rollup/issues/567))
2669
2670## 0.25.5
2671
2672* Make sure shorthand destructuring assignments don't break ([#528](https://github.com/rollup/rollup/issues/528))
2673* Allow 'exports' key ([#542](https://github.com/rollup/rollup/issues/542))
2674* Ensure `foo. bar` where `foo` is a namespace import is rewritten correctly ([#566](https://github.com/rollup/rollup/issues/566))
2675* Fix an edge case for exported globals (e.g. `export { document }`) ([#562](https://github.com/rollup/rollup/issues/562))
2676
2677## 0.25.4
2678
2679* Fix misnamed exports of default imports in ES bundles ([#513](https://github.com/rollup/rollup/issues/513))
2680* CLI: warn on missing config ([#515](https://github.com/rollup/rollup/pull/515))
2681* Detect side-effects in non-top-level member expression assignment ([#476](https://github.com/rollup/rollup/issues/476))
2682* Don't remove computed property class keys ([#504](https://github.com/rollup/rollup/issues/504))
2683* Augment existing global object rather than replacing ([#493](https://github.com/rollup/rollup/issues/493))
2684* Don't fail on `export {}`, warn instead ([#486](https://github.com/rollup/rollup/issues/486))
2685
2686## 0.25.3
2687
2688* Handle non-objects and `null` in `_interopDefault` ([#474](https://github.com/rollup/rollup/issues/474))
2689
2690## 0.25.2
2691
2692* Skip dead branches of a conditional expression (#[465](https://github.com/rollup/rollup/pull/465))
2693* Allow globals to be exported ([#472](https://github.com/rollup/rollup/pull/472))
2694* Ensure reassigned exports are exported ([#484](https://github.com/rollup/rollup/issues/484))
2695
2696## 0.25.1
2697
2698* Throw error if namespace is called ([#446](https://github.com/rollup/rollup/issues/446))
2699* Prevent shadowing bug in ES6 output ([#441](https://github.com/rollup/rollup/pull/441))
2700* Prevent `var exports.foo` ([#426](https://github.com/rollup/rollup/issues/426))
2701* Prevent double export of aliased symbols ([#438](https://github.com/rollup/rollup/issues/438))
2702* Provide more informative error if Rollup is used in-browser without appropriate `resolveId`/`load` hooks ([#275](https://github.com/rollup/rollup/issues/275))
2703* Use `_interopDefault` function to DRY out code with many external dependencies, in CommonJS output ([#458](https://github.com/rollup/rollup/pull/458))
2704
2705## 0.25.0
2706
2707* **breaking** Module order is determined according to spec, rather than in a way designed to prevent runtime errors. Rollup will warn if it detects runtime errors are likely ([#435](https://github.com/rollup/rollup/issues/435))
2708* Prevent overly aggressive tree-shaking with complex call expressions ([#440](https://github.com/rollup/rollup/issues/440))
2709
2710## 0.24.1
2711
2712* Handle calls to default exports other that are not function expressions or references to function declarations ([#421](https://github.com/rollup/rollup/issues/421))
2713* Ensure namespace blocks are created for chained imports ([#430](https://github.com/rollup/rollup/issues/430))
2714* Include references in computed property keys ([#434](https://github.com/rollup/rollup/issues/434))
2715* Use CLI `--external` option correctly ([#417](https://github.com/rollup/rollup/pull/417))
2716* Allow relative imports to be treated as external, if absolute paths are provided in `options.external` ([#410](https://github.com/rollup/rollup/issues/410))
2717* Make IIFE output adhere to Crockford style ([#415](https://github.com/rollup/rollup/pull/415))
2718
2719## 0.24.0
2720
2721* No longer attempts to resolve IDs in `options.external` ([#407](https://github.com/rollup/rollup/issues/407))
2722* Fix broken sourcemap resolution in cases where some modules are transformed and others aren't ([#404](https://github.com/rollup/rollup/issues/404))
2723
2724## 0.23.2
2725
2726* Ensure `dest` or `sourceMapFile` is resolved against CWD for purposes of sourcemap generation ([#344](https://github.com/rollup/rollup/issues/344))
2727* Support `banner`, `footer`, `intro` and `outro` options via CLI ([#330](https://github.com/rollup/rollup/issues/330))
2728* Allow `options.global` to be a function rather than an object, and warn on missing names ([#293](https://github.com/rollup/rollup/issues/293))
2729* Ensure side-effects are captured in cyclical call expressions ([#397](https://github.com/rollup/rollup/issues/397))
2730* Fix parse error with body-less arrow function expressions ([#403](https://github.com/rollup/rollup/issues/403))
2731
2732## 0.23.1
2733
2734* Reinstate missing fix from ([#392](https://github.com/rollup/rollup/pull/392))
2735
2736## 0.23.0
2737
2738* Add `bundleTransform` plugin hook and option ([#387](https://github.com/rollup/rollup/pull/387))
2739* Correctly store names in sourcemaps, regardless of transformers
2740* Add `--environment` option to CLI ([#388](https://github.com/rollup/rollup/pull/388))
2741* Handle destructuring in exports ([#374](https://github.com/rollup/rollup/issues/374))
2742* Fix UMD global exports bug introduced in 0.22.1 ([#392](https://github.com/rollup/rollup/pull/392))
2743
2744## 0.22.2
2745
2746* Prevent lost `var` keywords ([#390](https://github.com/rollup/rollup/issues/390))
2747
2748## 0.22.1
2749
2750* Update expected option keys ([#379](https://github.com/rollup/rollup/issues/379))
2751* Handle transformers that return stringified sourcemaps ([#377](https://github.com/rollup/rollup/issues/377))
2752* Automatically create missing namespaces if `moduleName` contains dots ([#378](https://github.com/rollup/rollup/issues/378))
2753* Ignore external dependency warnings coming from config file ([#333](https://github.com/rollup/rollup/issues/333))
2754* Update to latest magic-string for performance boost
2755
2756## 0.22.0
2757
2758* Duplicate warnings are squelched ([#362](https://github.com/rollup/rollup/issues/362))
2759* Plugins can manipulate or override the `options` object ([#371](https://github.com/rollup/rollup/pull/371))
2760
2761## 0.21.3
2762
2763* Validate option keys ([#348](https://github.com/rollup/rollup/pull/348))
2764* Allow namespaces imports to sit alongside named imports ([#355](https://github.com/rollup/rollup/issues/355))
2765* Count references inside destructured objects ([#364](https://github.com/rollup/rollup/issues/364))
2766* Preserve top-level `delete` statements ([#352](https://github.com/rollup/rollup/issues/352))
2767
2768## 0.21.2
2769
2770* Missing relative imports are an error, not a warning ([#321](https://github.com/rollup/rollup/issues/321))
2771* Fixed incorrectly renamed default exports in ES6 bundles ([#339](https://github.com/rollup/rollup/issues/339))
2772* Fixed infinite recursion bug ([#341](https://github.com/rollup/rollup/issues/341))
2773
2774## 0.21.1
2775
2776* Remove `aggressive: true` (was too aggressive) ([#309](https://github.com/rollup/rollup/pull/309))
2777* Handle top-level block statements ([#326](https://github.com/rollup/rollup/issues/326))
2778* Optimise namespaces with default exports ([#314](https://github.com/rollup/rollup/issues/314))
2779
2780## 0.21.0
2781
2782* Only include statements whose side-effects are relevant (i.e. contribute to exports or affect global state) ([#253](https://github.com/rollup/rollup/pull/253)) ([#253](https://github.com/rollup/rollup/pull/253))
2783* Exclude dead branches from analysis and inclusion ([#249](https://github.com/rollup/rollup/pull/249))
2784* Add `aggressive: true` option to eliminate all side-effects outside entry module
2785* More informative error when re-exporting non-existent binding ([#274](https://github.com/rollup/rollup/issues/274))
2786* Fix infinite recursion bug ([#291](https://github.com/rollup/rollup/issues/291))
2787* Log errors when using `rollup --config` ([#288](https://github.com/rollup/rollup/pull/288))
2788* Return rejected promises on startup instead of throwing error, if options are invalid ([#303](https://github.com/rollup/rollup/pull/303))
2789
2790## 0.20.5
2791
2792* Ensure re-exports don't create a local binding ([#270](https://github.com/rollup/rollup/pull/270))
2793
2794## 0.20.4
2795
2796* Check file exists at resolve time, to allow filenames with non-extension dots in them ([#250](https://github.com/rollup/rollup/pull/250))
2797* Import `Promise` where used, for Node 0.10 support ([#254](https://github.com/rollup/rollup/issues/254))
2798* Allow asynchronous transformer plugins ([#260](https://github.com/rollup/rollup/issues/260))
2799* Don't assume re-exported bindings are globals when deconflicting ([#267](https://github.com/rollup/rollup/issues/267))
2800
2801
2802## 0.20.3
2803
2804* Fix bug where multiple `export *` declarations caused error ([#244](https://github.com/rollup/rollup/pulls/244))
2805* Missing namespace exports are a warning, not an error ([#244](https://github.com/rollup/rollup/pulls/244))
2806* Plugins can provide `banner` and `footer` options (string, or function that returns a string) ([#235](https://github.com/rollup/rollup/issues/235))
2807* Warn on encountering `eval` ([#186](https://github.com/rollup/rollup/issues/186))
2808
2809## 0.20.2
2810
2811* Handle errors in build config file
2812* More robust deconflicting, in cases where e.g. `foo$1` already exists
2813* Use Rollup CLI for own build process
2814
2815## 0.20.1
2816
2817* Support `--config` file to enable plugins with CLI ([#226](https://github.com/rollup/rollup/pulls/226))
2818* Prevent `default` being used as variable name ([#215](https://github.com/rollup/rollup/issues/215))
2819* Update deps
2820
2821## 0.20.0
2822
2823* Support for [plugins](https://github.com/rollup/rollup/wiki/Plugins) ([#207](https://github.com/rollup/rollup/pulls/207))
2824* BREAKING – `options.transform`, `options.load`, `options.resolveId`, `options.resolveExternal` and `options.external` are no longer supported, and should be handled by plugins. [More info](https://github.com/rollup/rollup/wiki/Plugins)
2825* BREAKING – the .js extension is only added if it looks like there's no extension, allowing e.g. `import data from 'data.json'` (with the appropriate transformer). For safety, always include the file extension – import `./foo.js`, not `./foo`
2826
2827## 0.19.2
2828
2829* Fix exporting namespaces to include all of their exports ([#204](https://github.com/rollup/rollup/issues/204))
2830* Namespace exotic objects are frozen to ensure that its properties cannot be modified, reconfigured, redefined or deleted ([#203](https://github.com/rollup/rollup/pulls/203))
2831* Fix `ReferenceError: Promise is not defined` in node v0.10 ([#189](https://github.com/rollup/rollup/issues/189))
2832
2833## 0.19.1
2834
2835* Fix `module.basename()` when used with custom `resolveId` function
2836* Use [rollup-babel](https://github.com/rollup/rollup-babel) to build self
2837* Exposed the version string through the API: `require( 'rollup' ).VERSION`
2838
2839## 0.19.0
2840
2841* **breaking** The `transform` option is no longer passed through to custom loaders. Loaders should only concern themselves with providing source code; transformation will *always* take place
2842* `options.transform` functions can return a string, or a `{code, map, ast}` object. Where possible, sourcemap chains will be flattened ([#175](https://github.com/rollup/rollup/pull/175))
2843* `options.resolveId`, `options.resolveExternal` and `options.load` can each be a function or an array of functions. If an array, the first non-null/undefined return value is used. In both cases, failed resolution/loading will fall back to the defaults, unless an error is thrown. ([#174](https://github.com/rollup/rollup/pull/174))
2844* New `intro` and `outro` options – similar to `banner` and `footer` except inserted *inside* any format-specific wrapper
2845* Multiple var declarations in an export block (e.g. `export let a = 1, b = 2`) are split up to facilitate tree-shaking ([#171](https://github.com/rollup/rollup/issues/171))
2846* More informative error when using a missing namespace property ([#169](https://github.com/rollup/rollup/pull/169))
2847* Update various dependencies
2848
2849## 0.18.5
2850
2851* Allow namespaces to be assigned to variables ([#168](https://github.com/rollup/rollup/issues/168))
2852* Promote `chalk` and `source-map-support` to `dependencies`, as they're used by the CLI ([#167](https://github.com/rollup/rollup/pull/167))
2853
2854## 0.18.4
2855
2856* Make external modules configurable (i.e. `external.config.foo = 'bar'`) without erroring
2857
2858## 0.18.3
2859
2860* Crop indent exclusion ranges to exclude enclosing quotes ([#166](https://github.com/rollup/rollup/issues/166))
2861
2862## 0.18.2
2863
2864* Include definitions of namespace members that are exported as defaults
2865
2866## 0.18.1
2867
2868* Include `acorn.parse` in bundle, remove `sander` from dependencies, simplify build
2869
2870## 0.18.0
2871
2872* Internal rewrite
2873* Reinstate statically-analysable namespace imports
2874* Avoid using getters in namespace blocks where possible ([#144](https://github.com/rollup/rollup/issues/144))
2875* Track variable aliases ([#96](https://github.com/rollup/rollup/issues/96))
2876* Prevent multiline strings being indented ([#164](https://github.com/rollup/rollup/issues/164))
2877
2878## 0.17.4
2879
2880* Allow imports from hidden directories (replay of [#133](https://github.com/rollup/rollup/issues/133))
2881
2882## 0.17.3
2883
2884* Handle parenthesised default exports ([#136](https://github.com/rollup/rollup/issues/136))
2885
2886## 0.17.2
2887
2888* Allow use of scoped npm packages ([#131](https://github.com/rollup/rollup/issues/131))
2889
2890## 0.17.1
2891
2892* Allow namespaces to be passed to a function ([#149](https://github.com/rollup/rollup/issues/149))
2893
2894## 0.17.0
2895
2896* Roll back to 0.15.0 and reapply subsequent fixes pending resolution of ([#132](https://github.com/rollup/rollup/issues/132)) and related issues
2897
2898## 0.16.4
2899
2900* Fix import paths with `.` ([#133](https://github.com/rollup/rollup/issues/133))
2901* Prevent sourceMappingURL confusion leading to broken sourcemap
2902* Add code coverage reporting [#130](https://github.com/rollup/rollup/pull/130))
2903* Add `modules` property to user-facing `bundle` – an array with `{id}` objects ([#128](https://github.com/rollup/rollup/issues/128))
2904
2905## 0.16.3
2906
2907* Prevent adjacent blocks of multiple var declarations causing magic-string failure ([#105](https://github.com/rollup/rollup/issues/105))
2908
2909## 0.16.2
2910
2911* Top-level function calls and assignments to globals are treated as side-effects, and always included
2912* Import files from subdirectories of external packages, e.g. `import mod from 'foo/sub/mod'` ([#126](https://github.com/rollup/rollup/issues/126))
2913
2914## 0.16.1
2915
2916* Handle assignment patterns, and destructured/rest parameters, when analysing scopes
2917* Fix bug preventing project from self-building (make base `Identifier` class markable)
2918
2919## 0.16.0
2920
2921* Internal refactoring ([#99](https://github.com/rollup/rollup/pull/99))
2922* Optimisation for statically-analysable namespace imports ([#99](https://github.com/rollup/rollup/pull/99))
2923* Windows support (theoretically!) ([#117](https://github.com/rollup/rollup/pull/117) / [#119](https://github.com/rollup/rollup/pull/119))
2924
2925## 0.15.0
2926
2927* Load all modules specified by `import` statements, and do tree-shaking synchronously once loading is complete. This results in simpler and faster code, and enables future improvements ([#97](https://github.com/rollup/rollup/pull/97))
2928* Only rewrite `foo` as `exports.foo` when it makes sense to ([#92](https://github.com/rollup/rollup/issues/92))
2929* Fix bug with shadowed variables that are eventually exported ([#91](https://github.com/rollup/rollup/issues/91))
2930* Exclude unused function declarations that happen to modify a used name ([#90](https://github.com/rollup/rollup/pull/90))
2931* Simplify internal `Scope` model – scopes always attach to blocks, never function expressions/declarations
2932
2933## 0.14.1
2934
2935* `export { name } from './other'` does not create a local binding ([#16](https://github.com/rollup/rollup/issues/16))
2936* A single binding can be exported under multiple names ([#18](https://github.com/rollup/rollup/issues/18))
2937* `useStrict` option exposed to CLI as `--strict`/`--no-strict` ([#81](https://github.com/rollup/rollup/issues/81))
2938* Neater exports from ES6 bundles
2939
2940## 0.14.0
2941
2942* Internal refactoring
2943* Correctly deconflict generated default export names ([#72](https://github.com/rollup/rollup/issues/72))
2944* Handle `export { x } from 'y'` declarations ([#74](https://github.com/rollup/rollup/issues/74))
2945* Dedupe named imports from external modules in ES6 bundles ([#77](https://github.com/rollup/rollup/issues/77))
2946
2947## 0.13.0
2948
2949* Support `banner` and `footer` options ([#66](https://github.com/rollup/rollup/pull/66))
2950* Remove pre-existing sourcemap comments ([#66](https://github.com/rollup/rollup/pull/66))
2951* Deconflict external imports ([#66](https://github.com/rollup/rollup/pull/66))
2952* Use existing AST, if provided ([#66](https://github.com/rollup/rollup/pull/66))
2953* Rename internal namespace exports as appropriate ([#66](https://github.com/rollup/rollup/pull/66))
2954* Remove uninitialised var declarations that get exported ([#66](https://github.com/rollup/rollup/pull/66))
2955* Rename variables named `exports` to avoid conflicts ([#66](https://github.com/rollup/rollup/pull/66))
2956
2957## 0.12.1
2958
2959* Don't attempt to mark statements belonging to external modules ([#68](https://github.com/rollup/rollup/issues/68))
2960* Correctly deshadow variables that conflict with imports ([#68](https://github.com/rollup/rollup/issues/68))
2961
2962## 0.12.0
2963
2964* Internal re-architecting, resulting in more efficient bundling with reduced memory usage
2965* Shorthand properties are expanded if necessary ([#61](https://github.com/rollup/rollup/issues/61))
2966* Fixed various bugs with bundle external dependencies, particularly when generating ES6 bundles ([#59](https://github.com/rollup/rollup/issues/59))
2967* Add `--globals` option to CLI ([#60](https://github.com/rollup/rollup/pull/60))
2968* Allow imports of external modules for side-effects ([#55](https://github.com/rollup/rollup/pull/55))
2969* Prevent Rollup hanging on non-existent external module ([#54](https://github.com/rollup/rollup/pull/54))
2970
2971## 0.11.4
2972
2973* Side-effect preservation applies to internal default exports ([#43](https://github.com/rollup/rollup/issues/43))
2974
2975## 0.11.3
2976
2977* Class methods are not incorrectly renamed ([#42](https://github.com/rollup/rollup/issues/42))
2978* External modules are assigned names before canonical names are determined ([#42](https://github.com/rollup/rollup/issues/42))
2979
2980## 0.11.2
2981
2982* Correctly handle computed properties (e.g. `foo[bar]`) when discovering dependencies ([#47](https://github.com/rollup/rollup/pull/47))
2983
2984## 0.11.1
2985
2986* Support for `export * from '..'` ([#46](https://github.com/rollup/rollup/pull/46))
2987
2988## 0.11.0
2989
2990* Experimental browser-friendly build (`dist/rollup.browser.js`) ([#25](https://github.com/rollup/rollup/issues/25))
2991* Internal re-architecting to make discovery process simpler and more performant
2992* Preservation of side-effects that happen in a separate module to the affected definition ([#39](https://github.com/rollup/rollup/issues/39))
2993
2994## 0.10.0
2995
2996* Better sorting algorithm – sorting happens at the module level, rather than the statement level. This avoids certain edge cases
2997* IIFEs are ignored for the purposes of distinguishing between 'strong' and 'weak' dependencies
2998* Empty `var` declarations for exported bindings are omitted
2999
3000## 0.9.1
3001
3002* Much faster statement insertion (fixes major 0.9.0 performance regression)
3003
3004## 0.9.0
3005
3006* BREAKING - `resolvePath` is now `resolveId`. The returned `id` (which by default is a filepath) is passed to the `load` function, which can optionally be overridden, and which is applied to all modules including the entry module. This allows custom resolver and loading logic for integration with third party systems (e.g. JSPM) or, eventually, in-browser usage ([#30](https://github.com/rollup/rollup/issues/30))
3007* A statement cannot appear after later statements from the same bundle ([#34](https://github.com/rollup/rollup/issues/34))
3008* Tricky cyclical dependencies are handled ([#36](https://github.com/rollup/rollup/issues/36))
3009* `sourcemap` option is used by CLI (was omitted previously)
3010
3011## 0.8.3
3012
3013* Correctly rename functions that have arguments with the same name ([#32](https://github.com/rollup/rollup/issues/32))
3014* Ensure unused default exports are given a legal name ([#33](https://github.com/rollup/rollup/issues/33))
3015
3016## 0.8.2
3017
3018* Support `moduleId` and `moduleName` via CLI ([#24](https://github.com/rollup/rollup/issues/24))
3019
3020## 0.8.1
3021
3022* Anonymous functions that are exported as default are converted to named function declarations for correct hoisting, rather than being bound to functions ([#29](https://github.com/rollup/rollup/issues/29))
3023* Automatically-generated default export names are deconflicted with local definitions ([#29](https://github.com/rollup/rollup/issues/29))
3024
3025## 0.8.0
3026
3027* Top-level variable declarations with multiple declarators are split up, to avoid unnecessary code importing and incorrectly-ordered statements ([#26](https://github.com/rollup/rollup/issues/26))
3028* `this` at the top level is `undefined` ([#28](https://github.com/rollup/rollup/issues/28))
3029
3030## 0.7.8
3031
3032* Avoid using `path.parse` - unsupported in node 0.10
3033
3034## 0.7.7
3035
3036* Promise `source-map-support` from `devDependencies` to `dependencies` ([#23](https://github.com/rollup/rollup/issues/23))
3037
3038## 0.7.6
3039
3040* Better placement of `export default` statements ([#21](https://github.com/rollup/rollup/issues/21))
3041* Prevent function calls and property assignments from being treated as rebinding for sake of unbound default exports
3042* Add `--external foo,bar,baz` option to CLI (equivalent to `external: ['foo', 'bar', 'baz']`)
3043* Add CLI tests
3044
3045## 0.7.5
3046
3047* Prevent accidental conflicts with the global namespace ([#20](https://github.com/rollup/rollup/issues/20))
3048
3049## 0.7.4
3050
3051* More precise statement re-ordering to satisfy `export default` constraint (fixes bug introduced in 0.7.3)
3052
3053## 0.7.3
3054
3055* Default exports are not bound. To enable this, statements within a module are sorted to retain their original order ([#15](https://github.com/rollup/rollup/issues/15))
3056* Better positioning of comments ([#14](https://github.com/rollup/rollup/issues/14))
3057* Various fixes to get Travis-CI rigged up
3058
3059## 0.7.2
3060
3061* Fix sourcemap paths on Windows ([#6](https://github.com/rollup/rollup/pull/6))
3062
3063## 0.7.1
3064
3065* Named functions can be used as default exports from a bundle
3066* Method calls are assumed to mutate the owner (i.e. `foo.bar()` mutates `foo`) ([#13](https://github.com/rollup/rollup/issues/13))
3067* `options.indent` can be used to control indentation of resulting bundle. `options.true` (default) means 'auto', `options.false` means empty string. Alternatively specify whitespace e.g. `' '` or `'\t'` ([#5](https://github.com/rollup/rollup/issues/5))
3068
3069## 0.7.0
3070
3071* Ensure statements are always separated by a newline ([#9](https://github.com/rollup/rollup/pull/9))
3072* Use CommonJS `exports` correctly (UMD exports)
3073* Throw error if `moduleName` is required but missing (UMD exports)
3074* Attach IIFE global to `this` rather than `window`
3075* Allow names inside bundle to the the names of `Object.prototype` properties ([#12](https://github.com/rollup/rollup/pull/12))
3076* Keep exports live ([#11](https://github.com/rollup/rollup/pull/11))
3077
3078## 0.6.5
3079
3080* Add sourceMappingURL comment to code, as appropriate
3081* Higher resolution sourcemaps
3082
3083## 0.6.4
3084
3085* Fix CJS bundling with default export
3086
3087## 0.6.3
3088
3089* Fix exports and external module imports with some output formats
3090* Fix endless cycle bug on Windows ([#3](https://github.com/rollup/rollup/pull/3)) - thanks @Bobris
3091
3092## 0.6.2
3093
3094* Permit assignments to properties of imported bindings
3095
3096## 0.6.1
3097
3098* Support for basic transformers
3099
3100## 0.6.0
3101
3102* BREAKING - `rollup.rollup` and `bundle.write` both take a single options argument
3103* BREAKING - external modules must be declared upfront with `options.external: [...]`
3104* Non-relative module paths will be resolved by looking for `jsnext:main` fields in the appropriate `package.json` files. This behaviour can be overridden by passing an alternative `resolveExternal` function
3105* Fix sourcemap options
3106* Include CLI files in npm package (duh)
3107
3108## 0.5.0
3109
3110* Command line interface
3111* Sourcemap generation
3112* Correct behaviour with `export { x as y } from 'z'`
3113
3114## 0.4.1
3115
3116* More import name deconflicting
3117
3118## 0.4.0
3119
3120* Self-hosting! `rollup.rollup` now rolls up rollup
3121* Fix bug with comments inside a statement later being appended to it
3122* Prevent shadowing of external modules
3123* Rewrite computed property identifiers where necessary
3124* Preserve original statement order where possible
3125* Internal refactoring
3126
3127## 0.3.1
3128
3129* Saner deconflicting
3130* Rename namespace imports from external modules correctly
3131
3132## 0.3.0
3133
3134* Basic functionality present, mostly spec-compliant
3135
3136## 0.2.1
3137
3138* Include dist files in npm package (duh)
3139
3140## 0.2.0
3141
3142* First release capable of doing anything useful
3143* Still lots of basic functionality missing
3144
3145## 0.1.0
3146
3147* Initial experiment