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14.6 kBJavaScriptView Raw
1import _mapInstanceProperty from "@babel/runtime-corejs3/core-js/instance/map";
2import _forEachInstanceProperty from "@babel/runtime-corejs3/core-js/instance/for-each";
3import _Object$defineProperty from "@babel/runtime-corejs3/core-js/object/define-property";
4import _indexOfInstanceProperty from "@babel/runtime-corejs3/core-js/instance/index-of";
5import _spliceInstanceProperty from "@babel/runtime-corejs3/core-js/instance/splice";
6import _Symbol$toStringTag from "@babel/runtime-corejs3/core-js/symbol/to-string-tag";
7import _Object$assign from "@babel/runtime-corejs3/core-js/object/assign";
8import _findInstanceProperty from "@babel/runtime-corejs3/core-js/instance/find";
9import toArray from "./toArray.js";
10import toPropertyKey from "./toPropertyKey.js";
11export default function _decorate(decorators, factory, superClass, mixins) {
12 var _context;
13
14 var api = _getDecoratorsApi();
15
16 if (mixins) {
17 for (var i = 0; i < mixins.length; i++) {
18 api = mixins[i](api);
19 }
20 }
21
22 var r = factory(function initialize(O) {
23 api.initializeInstanceElements(O, decorated.elements);
24 }, superClass);
25 var decorated = api.decorateClass(_coalesceClassElements(_mapInstanceProperty(_context = r.d).call(_context, _createElementDescriptor)), decorators);
26 api.initializeClassElements(r.F, decorated.elements);
27 return api.runClassFinishers(r.F, decorated.finishers);
28}
29
30function _getDecoratorsApi() {
31 _getDecoratorsApi = function _getDecoratorsApi() {
32 return api;
33 };
34
35 var api = {
36 elementsDefinitionOrder: [["method"], ["field"]],
37 initializeInstanceElements: function initializeInstanceElements(O, elements) {
38 var _context2;
39
40 _forEachInstanceProperty(_context2 = ["method", "field"]).call(_context2, function (kind) {
41 _forEachInstanceProperty(elements).call(elements, function (element) {
42 if (element.kind === kind && element.placement === "own") {
43 this.defineClassElement(O, element);
44 }
45 }, this);
46 }, this);
47 },
48 initializeClassElements: function initializeClassElements(F, elements) {
49 var _context3;
50
51 var proto = F.prototype;
52
53 _forEachInstanceProperty(_context3 = ["method", "field"]).call(_context3, function (kind) {
54 _forEachInstanceProperty(elements).call(elements, function (element) {
55 var placement = element.placement;
56
57 if (element.kind === kind && (placement === "static" || placement === "prototype")) {
58 var receiver = placement === "static" ? F : proto;
59 this.defineClassElement(receiver, element);
60 }
61 }, this);
62 }, this);
63 },
64 defineClassElement: function defineClassElement(receiver, element) {
65 var descriptor = element.descriptor;
66
67 if (element.kind === "field") {
68 var initializer = element.initializer;
69 descriptor = {
70 enumerable: descriptor.enumerable,
71 writable: descriptor.writable,
72 configurable: descriptor.configurable,
73 value: initializer === void 0 ? void 0 : initializer.call(receiver)
74 };
75 }
76
77 _Object$defineProperty(receiver, element.key, descriptor);
78 },
79 decorateClass: function decorateClass(elements, decorators) {
80 var newElements = [];
81 var finishers = [];
82 var placements = {
83 "static": [],
84 prototype: [],
85 own: []
86 };
87
88 _forEachInstanceProperty(elements).call(elements, function (element) {
89 this.addElementPlacement(element, placements);
90 }, this);
91
92 _forEachInstanceProperty(elements).call(elements, function (element) {
93 if (!_hasDecorators(element)) return newElements.push(element);
94 var elementFinishersExtras = this.decorateElement(element, placements);
95 newElements.push(elementFinishersExtras.element);
96 newElements.push.apply(newElements, elementFinishersExtras.extras);
97 finishers.push.apply(finishers, elementFinishersExtras.finishers);
98 }, this);
99
100 if (!decorators) {
101 return {
102 elements: newElements,
103 finishers: finishers
104 };
105 }
106
107 var result = this.decorateConstructor(newElements, decorators);
108 finishers.push.apply(finishers, result.finishers);
109 result.finishers = finishers;
110 return result;
111 },
112 addElementPlacement: function addElementPlacement(element, placements, silent) {
113 var keys = placements[element.placement];
114
115 if (!silent && _indexOfInstanceProperty(keys).call(keys, element.key) !== -1) {
116 throw new TypeError("Duplicated element (" + element.key + ")");
117 }
118
119 keys.push(element.key);
120 },
121 decorateElement: function decorateElement(element, placements) {
122 var extras = [];
123 var finishers = [];
124
125 for (var decorators = element.decorators, i = decorators.length - 1; i >= 0; i--) {
126 var keys = placements[element.placement];
127
128 _spliceInstanceProperty(keys).call(keys, _indexOfInstanceProperty(keys).call(keys, element.key), 1);
129
130 var elementObject = this.fromElementDescriptor(element);
131 var elementFinisherExtras = this.toElementFinisherExtras((0, decorators[i])(elementObject) || elementObject);
132 element = elementFinisherExtras.element;
133 this.addElementPlacement(element, placements);
134
135 if (elementFinisherExtras.finisher) {
136 finishers.push(elementFinisherExtras.finisher);
137 }
138
139 var newExtras = elementFinisherExtras.extras;
140
141 if (newExtras) {
142 for (var j = 0; j < newExtras.length; j++) {
143 this.addElementPlacement(newExtras[j], placements);
144 }
145
146 extras.push.apply(extras, newExtras);
147 }
148 }
149
150 return {
151 element: element,
152 finishers: finishers,
153 extras: extras
154 };
155 },
156 decorateConstructor: function decorateConstructor(elements, decorators) {
157 var finishers = [];
158
159 for (var i = decorators.length - 1; i >= 0; i--) {
160 var obj = this.fromClassDescriptor(elements);
161 var elementsAndFinisher = this.toClassDescriptor((0, decorators[i])(obj) || obj);
162
163 if (elementsAndFinisher.finisher !== undefined) {
164 finishers.push(elementsAndFinisher.finisher);
165 }
166
167 if (elementsAndFinisher.elements !== undefined) {
168 elements = elementsAndFinisher.elements;
169
170 for (var j = 0; j < elements.length - 1; j++) {
171 for (var k = j + 1; k < elements.length; k++) {
172 if (elements[j].key === elements[k].key && elements[j].placement === elements[k].placement) {
173 throw new TypeError("Duplicated element (" + elements[j].key + ")");
174 }
175 }
176 }
177 }
178 }
179
180 return {
181 elements: elements,
182 finishers: finishers
183 };
184 },
185 fromElementDescriptor: function fromElementDescriptor(element) {
186 var obj = {
187 kind: element.kind,
188 key: element.key,
189 placement: element.placement,
190 descriptor: element.descriptor
191 };
192 var desc = {
193 value: "Descriptor",
194 configurable: true
195 };
196
197 _Object$defineProperty(obj, _Symbol$toStringTag, desc);
198
199 if (element.kind === "field") obj.initializer = element.initializer;
200 return obj;
201 },
202 toElementDescriptors: function toElementDescriptors(elementObjects) {
203 var _context4;
204
205 if (elementObjects === undefined) return;
206 return _mapInstanceProperty(_context4 = toArray(elementObjects)).call(_context4, function (elementObject) {
207 var element = this.toElementDescriptor(elementObject);
208 this.disallowProperty(elementObject, "finisher", "An element descriptor");
209 this.disallowProperty(elementObject, "extras", "An element descriptor");
210 return element;
211 }, this);
212 },
213 toElementDescriptor: function toElementDescriptor(elementObject) {
214 var kind = String(elementObject.kind);
215
216 if (kind !== "method" && kind !== "field") {
217 throw new TypeError('An element descriptor\'s .kind property must be either "method" or' + ' "field", but a decorator created an element descriptor with' + ' .kind "' + kind + '"');
218 }
219
220 var key = toPropertyKey(elementObject.key);
221 var placement = String(elementObject.placement);
222
223 if (placement !== "static" && placement !== "prototype" && placement !== "own") {
224 throw new TypeError('An element descriptor\'s .placement property must be one of "static",' + ' "prototype" or "own", but a decorator created an element descriptor' + ' with .placement "' + placement + '"');
225 }
226
227 var descriptor = elementObject.descriptor;
228 this.disallowProperty(elementObject, "elements", "An element descriptor");
229 var element = {
230 kind: kind,
231 key: key,
232 placement: placement,
233 descriptor: _Object$assign({}, descriptor)
234 };
235
236 if (kind !== "field") {
237 this.disallowProperty(elementObject, "initializer", "A method descriptor");
238 } else {
239 this.disallowProperty(descriptor, "get", "The property descriptor of a field descriptor");
240 this.disallowProperty(descriptor, "set", "The property descriptor of a field descriptor");
241 this.disallowProperty(descriptor, "value", "The property descriptor of a field descriptor");
242 element.initializer = elementObject.initializer;
243 }
244
245 return element;
246 },
247 toElementFinisherExtras: function toElementFinisherExtras(elementObject) {
248 var element = this.toElementDescriptor(elementObject);
249
250 var finisher = _optionalCallableProperty(elementObject, "finisher");
251
252 var extras = this.toElementDescriptors(elementObject.extras);
253 return {
254 element: element,
255 finisher: finisher,
256 extras: extras
257 };
258 },
259 fromClassDescriptor: function fromClassDescriptor(elements) {
260 var obj = {
261 kind: "class",
262 elements: _mapInstanceProperty(elements).call(elements, this.fromElementDescriptor, this)
263 };
264 var desc = {
265 value: "Descriptor",
266 configurable: true
267 };
268
269 _Object$defineProperty(obj, _Symbol$toStringTag, desc);
270
271 return obj;
272 },
273 toClassDescriptor: function toClassDescriptor(obj) {
274 var kind = String(obj.kind);
275
276 if (kind !== "class") {
277 throw new TypeError('A class descriptor\'s .kind property must be "class", but a decorator' + ' created a class descriptor with .kind "' + kind + '"');
278 }
279
280 this.disallowProperty(obj, "key", "A class descriptor");
281 this.disallowProperty(obj, "placement", "A class descriptor");
282 this.disallowProperty(obj, "descriptor", "A class descriptor");
283 this.disallowProperty(obj, "initializer", "A class descriptor");
284 this.disallowProperty(obj, "extras", "A class descriptor");
285
286 var finisher = _optionalCallableProperty(obj, "finisher");
287
288 var elements = this.toElementDescriptors(obj.elements);
289 return {
290 elements: elements,
291 finisher: finisher
292 };
293 },
294 runClassFinishers: function runClassFinishers(constructor, finishers) {
295 for (var i = 0; i < finishers.length; i++) {
296 var newConstructor = (0, finishers[i])(constructor);
297
298 if (newConstructor !== undefined) {
299 if (typeof newConstructor !== "function") {
300 throw new TypeError("Finishers must return a constructor.");
301 }
302
303 constructor = newConstructor;
304 }
305 }
306
307 return constructor;
308 },
309 disallowProperty: function disallowProperty(obj, name, objectType) {
310 if (obj[name] !== undefined) {
311 throw new TypeError(objectType + " can't have a ." + name + " property.");
312 }
313 }
314 };
315 return api;
316}
317
318function _createElementDescriptor(def) {
319 var key = toPropertyKey(def.key);
320 var descriptor;
321
322 if (def.kind === "method") {
323 descriptor = {
324 value: def.value,
325 writable: true,
326 configurable: true,
327 enumerable: false
328 };
329 } else if (def.kind === "get") {
330 descriptor = {
331 get: def.value,
332 configurable: true,
333 enumerable: false
334 };
335 } else if (def.kind === "set") {
336 descriptor = {
337 set: def.value,
338 configurable: true,
339 enumerable: false
340 };
341 } else if (def.kind === "field") {
342 descriptor = {
343 configurable: true,
344 writable: true,
345 enumerable: true
346 };
347 }
348
349 var element = {
350 kind: def.kind === "field" ? "field" : "method",
351 key: key,
352 placement: def["static"] ? "static" : def.kind === "field" ? "own" : "prototype",
353 descriptor: descriptor
354 };
355 if (def.decorators) element.decorators = def.decorators;
356 if (def.kind === "field") element.initializer = def.value;
357 return element;
358}
359
360function _coalesceGetterSetter(element, other) {
361 if (element.descriptor.get !== undefined) {
362 other.descriptor.get = element.descriptor.get;
363 } else {
364 other.descriptor.set = element.descriptor.set;
365 }
366}
367
368function _coalesceClassElements(elements) {
369 var newElements = [];
370
371 var isSameElement = function isSameElement(other) {
372 return other.kind === "method" && other.key === element.key && other.placement === element.placement;
373 };
374
375 for (var i = 0; i < elements.length; i++) {
376 var element = elements[i];
377 var other;
378
379 if (element.kind === "method" && (other = _findInstanceProperty(newElements).call(newElements, isSameElement))) {
380 if (_isDataDescriptor(element.descriptor) || _isDataDescriptor(other.descriptor)) {
381 if (_hasDecorators(element) || _hasDecorators(other)) {
382 throw new ReferenceError("Duplicated methods (" + element.key + ") can't be decorated.");
383 }
384
385 other.descriptor = element.descriptor;
386 } else {
387 if (_hasDecorators(element)) {
388 if (_hasDecorators(other)) {
389 throw new ReferenceError("Decorators can't be placed on different accessors with for " + "the same property (" + element.key + ").");
390 }
391
392 other.decorators = element.decorators;
393 }
394
395 _coalesceGetterSetter(element, other);
396 }
397 } else {
398 newElements.push(element);
399 }
400 }
401
402 return newElements;
403}
404
405function _hasDecorators(element) {
406 return element.decorators && element.decorators.length;
407}
408
409function _isDataDescriptor(desc) {
410 return desc !== undefined && !(desc.value === undefined && desc.writable === undefined);
411}
412
413function _optionalCallableProperty(obj, name) {
414 var value = obj[name];
415
416 if (value !== undefined && typeof value !== "function") {
417 throw new TypeError("Expected '" + name + "' to be a function");
418 }
419
420 return value;
421}
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