| 1 | (function (global, factory) {
|
| 2 | if (typeof define === "function" && define.amd) {
|
| 3 | define("webextension-polyfill", ["module"], factory);
|
| 4 | } else if (typeof exports !== "undefined") {
|
| 5 | factory(module);
|
| 6 | } else {
|
| 7 | var mod = {
|
| 8 | exports: {}
|
| 9 | };
|
| 10 | factory(mod);
|
| 11 | global.browser = mod.exports;
|
| 12 | }
|
| 13 | })(this, function (module) {
|
| 14 | /* webextension-polyfill - v0.2.1 - Thu Oct 12 2017 12:31:04 */
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| 15 | /* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
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| 16 | /* vim: set sts=2 sw=2 et tw=80: */
|
| 17 | /* This Source Code Form is subject to the terms of the Mozilla Public
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| 18 | * License, v. 2.0. If a copy of the MPL was not distributed with this
|
| 19 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
| 20 | ;
|
| 21 |
|
| 22 | if (typeof browser === "undefined") {
|
| 23 | // Wrapping the bulk of this polyfill in a one-time-use function is a minor
|
| 24 | // optimization for Firefox. Since Spidermonkey does not fully parse the
|
| 25 | // contents of a function until the first time it's called, and since it will
|
| 26 | // never actually need to be called, this allows the polyfill to be included
|
| 27 | // in Firefox nearly for free.
|
| 28 | const wrapAPIs = () => {
|
| 29 | // NOTE: apiMetadata is associated to the content of the api-metadata.json file
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| 30 | // at build time by replacing the following "include" with the content of the
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| 31 | // JSON file.
|
| 32 | const apiMetadata = {
|
| 33 | "alarms": {
|
| 34 | "clear": {
|
| 35 | "minArgs": 0,
|
| 36 | "maxArgs": 1
|
| 37 | },
|
| 38 | "clearAll": {
|
| 39 | "minArgs": 0,
|
| 40 | "maxArgs": 0
|
| 41 | },
|
| 42 | "get": {
|
| 43 | "minArgs": 0,
|
| 44 | "maxArgs": 1
|
| 45 | },
|
| 46 | "getAll": {
|
| 47 | "minArgs": 0,
|
| 48 | "maxArgs": 0
|
| 49 | }
|
| 50 | },
|
| 51 | "bookmarks": {
|
| 52 | "create": {
|
| 53 | "minArgs": 1,
|
| 54 | "maxArgs": 1
|
| 55 | },
|
| 56 | "export": {
|
| 57 | "minArgs": 0,
|
| 58 | "maxArgs": 0
|
| 59 | },
|
| 60 | "get": {
|
| 61 | "minArgs": 1,
|
| 62 | "maxArgs": 1
|
| 63 | },
|
| 64 | "getChildren": {
|
| 65 | "minArgs": 1,
|
| 66 | "maxArgs": 1
|
| 67 | },
|
| 68 | "getRecent": {
|
| 69 | "minArgs": 1,
|
| 70 | "maxArgs": 1
|
| 71 | },
|
| 72 | "getTree": {
|
| 73 | "minArgs": 0,
|
| 74 | "maxArgs": 0
|
| 75 | },
|
| 76 | "getSubTree": {
|
| 77 | "minArgs": 1,
|
| 78 | "maxArgs": 1
|
| 79 | },
|
| 80 | "import": {
|
| 81 | "minArgs": 0,
|
| 82 | "maxArgs": 0
|
| 83 | },
|
| 84 | "move": {
|
| 85 | "minArgs": 2,
|
| 86 | "maxArgs": 2
|
| 87 | },
|
| 88 | "remove": {
|
| 89 | "minArgs": 1,
|
| 90 | "maxArgs": 1
|
| 91 | },
|
| 92 | "removeTree": {
|
| 93 | "minArgs": 1,
|
| 94 | "maxArgs": 1
|
| 95 | },
|
| 96 | "search": {
|
| 97 | "minArgs": 1,
|
| 98 | "maxArgs": 1
|
| 99 | },
|
| 100 | "update": {
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| 101 | "minArgs": 2,
|
| 102 | "maxArgs": 2
|
| 103 | }
|
| 104 | },
|
| 105 | "browserAction": {
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| 106 | "getBadgeBackgroundColor": {
|
| 107 | "minArgs": 1,
|
| 108 | "maxArgs": 1
|
| 109 | },
|
| 110 | "getBadgeText": {
|
| 111 | "minArgs": 1,
|
| 112 | "maxArgs": 1
|
| 113 | },
|
| 114 | "getPopup": {
|
| 115 | "minArgs": 1,
|
| 116 | "maxArgs": 1
|
| 117 | },
|
| 118 | "getTitle": {
|
| 119 | "minArgs": 1,
|
| 120 | "maxArgs": 1
|
| 121 | },
|
| 122 | "setIcon": {
|
| 123 | "minArgs": 1,
|
| 124 | "maxArgs": 1
|
| 125 | }
|
| 126 | },
|
| 127 | "commands": {
|
| 128 | "getAll": {
|
| 129 | "minArgs": 0,
|
| 130 | "maxArgs": 0
|
| 131 | }
|
| 132 | },
|
| 133 | "contextMenus": {
|
| 134 | "update": {
|
| 135 | "minArgs": 2,
|
| 136 | "maxArgs": 2
|
| 137 | },
|
| 138 | "remove": {
|
| 139 | "minArgs": 1,
|
| 140 | "maxArgs": 1
|
| 141 | },
|
| 142 | "removeAll": {
|
| 143 | "minArgs": 0,
|
| 144 | "maxArgs": 0
|
| 145 | }
|
| 146 | },
|
| 147 | "cookies": {
|
| 148 | "get": {
|
| 149 | "minArgs": 1,
|
| 150 | "maxArgs": 1
|
| 151 | },
|
| 152 | "getAll": {
|
| 153 | "minArgs": 1,
|
| 154 | "maxArgs": 1
|
| 155 | },
|
| 156 | "getAllCookieStores": {
|
| 157 | "minArgs": 0,
|
| 158 | "maxArgs": 0
|
| 159 | },
|
| 160 | "remove": {
|
| 161 | "minArgs": 1,
|
| 162 | "maxArgs": 1
|
| 163 | },
|
| 164 | "set": {
|
| 165 | "minArgs": 1,
|
| 166 | "maxArgs": 1
|
| 167 | }
|
| 168 | },
|
| 169 | "devtools": {
|
| 170 | "inspectedWindow": {
|
| 171 | "eval": {
|
| 172 | "minArgs": 1,
|
| 173 | "maxArgs": 2
|
| 174 | }
|
| 175 | },
|
| 176 | "panels": {
|
| 177 | "create": {
|
| 178 | "minArgs": 3,
|
| 179 | "maxArgs": 3,
|
| 180 | "singleCallbackArg": true
|
| 181 | }
|
| 182 | }
|
| 183 | },
|
| 184 | "downloads": {
|
| 185 | "download": {
|
| 186 | "minArgs": 1,
|
| 187 | "maxArgs": 1
|
| 188 | },
|
| 189 | "cancel": {
|
| 190 | "minArgs": 1,
|
| 191 | "maxArgs": 1
|
| 192 | },
|
| 193 | "erase": {
|
| 194 | "minArgs": 1,
|
| 195 | "maxArgs": 1
|
| 196 | },
|
| 197 | "getFileIcon": {
|
| 198 | "minArgs": 1,
|
| 199 | "maxArgs": 2
|
| 200 | },
|
| 201 | "open": {
|
| 202 | "minArgs": 1,
|
| 203 | "maxArgs": 1
|
| 204 | },
|
| 205 | "pause": {
|
| 206 | "minArgs": 1,
|
| 207 | "maxArgs": 1
|
| 208 | },
|
| 209 | "removeFile": {
|
| 210 | "minArgs": 1,
|
| 211 | "maxArgs": 1
|
| 212 | },
|
| 213 | "resume": {
|
| 214 | "minArgs": 1,
|
| 215 | "maxArgs": 1
|
| 216 | },
|
| 217 | "search": {
|
| 218 | "minArgs": 1,
|
| 219 | "maxArgs": 1
|
| 220 | },
|
| 221 | "show": {
|
| 222 | "minArgs": 1,
|
| 223 | "maxArgs": 1
|
| 224 | }
|
| 225 | },
|
| 226 | "extension": {
|
| 227 | "isAllowedFileSchemeAccess": {
|
| 228 | "minArgs": 0,
|
| 229 | "maxArgs": 0
|
| 230 | },
|
| 231 | "isAllowedIncognitoAccess": {
|
| 232 | "minArgs": 0,
|
| 233 | "maxArgs": 0
|
| 234 | }
|
| 235 | },
|
| 236 | "history": {
|
| 237 | "addUrl": {
|
| 238 | "minArgs": 1,
|
| 239 | "maxArgs": 1
|
| 240 | },
|
| 241 | "getVisits": {
|
| 242 | "minArgs": 1,
|
| 243 | "maxArgs": 1
|
| 244 | },
|
| 245 | "deleteAll": {
|
| 246 | "minArgs": 0,
|
| 247 | "maxArgs": 0
|
| 248 | },
|
| 249 | "deleteRange": {
|
| 250 | "minArgs": 1,
|
| 251 | "maxArgs": 1
|
| 252 | },
|
| 253 | "deleteUrl": {
|
| 254 | "minArgs": 1,
|
| 255 | "maxArgs": 1
|
| 256 | },
|
| 257 | "search": {
|
| 258 | "minArgs": 1,
|
| 259 | "maxArgs": 1
|
| 260 | }
|
| 261 | },
|
| 262 | "i18n": {
|
| 263 | "detectLanguage": {
|
| 264 | "minArgs": 1,
|
| 265 | "maxArgs": 1
|
| 266 | },
|
| 267 | "getAcceptLanguages": {
|
| 268 | "minArgs": 0,
|
| 269 | "maxArgs": 0
|
| 270 | }
|
| 271 | },
|
| 272 | "idle": {
|
| 273 | "queryState": {
|
| 274 | "minArgs": 1,
|
| 275 | "maxArgs": 1
|
| 276 | }
|
| 277 | },
|
| 278 | "management": {
|
| 279 | "get": {
|
| 280 | "minArgs": 1,
|
| 281 | "maxArgs": 1
|
| 282 | },
|
| 283 | "getAll": {
|
| 284 | "minArgs": 0,
|
| 285 | "maxArgs": 0
|
| 286 | },
|
| 287 | "getSelf": {
|
| 288 | "minArgs": 0,
|
| 289 | "maxArgs": 0
|
| 290 | },
|
| 291 | "uninstallSelf": {
|
| 292 | "minArgs": 0,
|
| 293 | "maxArgs": 1
|
| 294 | }
|
| 295 | },
|
| 296 | "notifications": {
|
| 297 | "clear": {
|
| 298 | "minArgs": 1,
|
| 299 | "maxArgs": 1
|
| 300 | },
|
| 301 | "create": {
|
| 302 | "minArgs": 1,
|
| 303 | "maxArgs": 2
|
| 304 | },
|
| 305 | "getAll": {
|
| 306 | "minArgs": 0,
|
| 307 | "maxArgs": 0
|
| 308 | },
|
| 309 | "getPermissionLevel": {
|
| 310 | "minArgs": 0,
|
| 311 | "maxArgs": 0
|
| 312 | },
|
| 313 | "update": {
|
| 314 | "minArgs": 2,
|
| 315 | "maxArgs": 2
|
| 316 | }
|
| 317 | },
|
| 318 | "pageAction": {
|
| 319 | "getPopup": {
|
| 320 | "minArgs": 1,
|
| 321 | "maxArgs": 1
|
| 322 | },
|
| 323 | "getTitle": {
|
| 324 | "minArgs": 1,
|
| 325 | "maxArgs": 1
|
| 326 | },
|
| 327 | "hide": {
|
| 328 | "minArgs": 0,
|
| 329 | "maxArgs": 0
|
| 330 | },
|
| 331 | "setIcon": {
|
| 332 | "minArgs": 1,
|
| 333 | "maxArgs": 1
|
| 334 | },
|
| 335 | "show": {
|
| 336 | "minArgs": 0,
|
| 337 | "maxArgs": 0
|
| 338 | }
|
| 339 | },
|
| 340 | "runtime": {
|
| 341 | "getBackgroundPage": {
|
| 342 | "minArgs": 0,
|
| 343 | "maxArgs": 0
|
| 344 | },
|
| 345 | "getBrowserInfo": {
|
| 346 | "minArgs": 0,
|
| 347 | "maxArgs": 0
|
| 348 | },
|
| 349 | "getPlatformInfo": {
|
| 350 | "minArgs": 0,
|
| 351 | "maxArgs": 0
|
| 352 | },
|
| 353 | "openOptionsPage": {
|
| 354 | "minArgs": 0,
|
| 355 | "maxArgs": 0
|
| 356 | },
|
| 357 | "requestUpdateCheck": {
|
| 358 | "minArgs": 0,
|
| 359 | "maxArgs": 0
|
| 360 | },
|
| 361 | "sendMessage": {
|
| 362 | "minArgs": 1,
|
| 363 | "maxArgs": 3
|
| 364 | },
|
| 365 | "sendNativeMessage": {
|
| 366 | "minArgs": 2,
|
| 367 | "maxArgs": 2
|
| 368 | },
|
| 369 | "setUninstallURL": {
|
| 370 | "minArgs": 1,
|
| 371 | "maxArgs": 1
|
| 372 | }
|
| 373 | },
|
| 374 | "storage": {
|
| 375 | "local": {
|
| 376 | "clear": {
|
| 377 | "minArgs": 0,
|
| 378 | "maxArgs": 0
|
| 379 | },
|
| 380 | "get": {
|
| 381 | "minArgs": 0,
|
| 382 | "maxArgs": 1
|
| 383 | },
|
| 384 | "getBytesInUse": {
|
| 385 | "minArgs": 0,
|
| 386 | "maxArgs": 1
|
| 387 | },
|
| 388 | "remove": {
|
| 389 | "minArgs": 1,
|
| 390 | "maxArgs": 1
|
| 391 | },
|
| 392 | "set": {
|
| 393 | "minArgs": 1,
|
| 394 | "maxArgs": 1
|
| 395 | }
|
| 396 | },
|
| 397 | "managed": {
|
| 398 | "get": {
|
| 399 | "minArgs": 0,
|
| 400 | "maxArgs": 1
|
| 401 | },
|
| 402 | "getBytesInUse": {
|
| 403 | "minArgs": 0,
|
| 404 | "maxArgs": 1
|
| 405 | }
|
| 406 | },
|
| 407 | "sync": {
|
| 408 | "clear": {
|
| 409 | "minArgs": 0,
|
| 410 | "maxArgs": 0
|
| 411 | },
|
| 412 | "get": {
|
| 413 | "minArgs": 0,
|
| 414 | "maxArgs": 1
|
| 415 | },
|
| 416 | "getBytesInUse": {
|
| 417 | "minArgs": 0,
|
| 418 | "maxArgs": 1
|
| 419 | },
|
| 420 | "remove": {
|
| 421 | "minArgs": 1,
|
| 422 | "maxArgs": 1
|
| 423 | },
|
| 424 | "set": {
|
| 425 | "minArgs": 1,
|
| 426 | "maxArgs": 1
|
| 427 | }
|
| 428 | }
|
| 429 | },
|
| 430 | "tabs": {
|
| 431 | "create": {
|
| 432 | "minArgs": 1,
|
| 433 | "maxArgs": 1
|
| 434 | },
|
| 435 | "captureVisibleTab": {
|
| 436 | "minArgs": 0,
|
| 437 | "maxArgs": 2
|
| 438 | },
|
| 439 | "detectLanguage": {
|
| 440 | "minArgs": 0,
|
| 441 | "maxArgs": 1
|
| 442 | },
|
| 443 | "duplicate": {
|
| 444 | "minArgs": 1,
|
| 445 | "maxArgs": 1
|
| 446 | },
|
| 447 | "executeScript": {
|
| 448 | "minArgs": 1,
|
| 449 | "maxArgs": 2
|
| 450 | },
|
| 451 | "get": {
|
| 452 | "minArgs": 1,
|
| 453 | "maxArgs": 1
|
| 454 | },
|
| 455 | "getCurrent": {
|
| 456 | "minArgs": 0,
|
| 457 | "maxArgs": 0
|
| 458 | },
|
| 459 | "getZoom": {
|
| 460 | "minArgs": 0,
|
| 461 | "maxArgs": 1
|
| 462 | },
|
| 463 | "getZoomSettings": {
|
| 464 | "minArgs": 0,
|
| 465 | "maxArgs": 1
|
| 466 | },
|
| 467 | "highlight": {
|
| 468 | "minArgs": 1,
|
| 469 | "maxArgs": 1
|
| 470 | },
|
| 471 | "insertCSS": {
|
| 472 | "minArgs": 1,
|
| 473 | "maxArgs": 2
|
| 474 | },
|
| 475 | "move": {
|
| 476 | "minArgs": 2,
|
| 477 | "maxArgs": 2
|
| 478 | },
|
| 479 | "reload": {
|
| 480 | "minArgs": 0,
|
| 481 | "maxArgs": 2
|
| 482 | },
|
| 483 | "remove": {
|
| 484 | "minArgs": 1,
|
| 485 | "maxArgs": 1
|
| 486 | },
|
| 487 | "query": {
|
| 488 | "minArgs": 1,
|
| 489 | "maxArgs": 1
|
| 490 | },
|
| 491 | "removeCSS": {
|
| 492 | "minArgs": 1,
|
| 493 | "maxArgs": 2
|
| 494 | },
|
| 495 | "sendMessage": {
|
| 496 | "minArgs": 2,
|
| 497 | "maxArgs": 3
|
| 498 | },
|
| 499 | "setZoom": {
|
| 500 | "minArgs": 1,
|
| 501 | "maxArgs": 2
|
| 502 | },
|
| 503 | "setZoomSettings": {
|
| 504 | "minArgs": 1,
|
| 505 | "maxArgs": 2
|
| 506 | },
|
| 507 | "update": {
|
| 508 | "minArgs": 1,
|
| 509 | "maxArgs": 2
|
| 510 | }
|
| 511 | },
|
| 512 | "webNavigation": {
|
| 513 | "getAllFrames": {
|
| 514 | "minArgs": 1,
|
| 515 | "maxArgs": 1
|
| 516 | },
|
| 517 | "getFrame": {
|
| 518 | "minArgs": 1,
|
| 519 | "maxArgs": 1
|
| 520 | }
|
| 521 | },
|
| 522 | "webRequest": {
|
| 523 | "handlerBehaviorChanged": {
|
| 524 | "minArgs": 0,
|
| 525 | "maxArgs": 0
|
| 526 | }
|
| 527 | },
|
| 528 | "windows": {
|
| 529 | "create": {
|
| 530 | "minArgs": 0,
|
| 531 | "maxArgs": 1
|
| 532 | },
|
| 533 | "get": {
|
| 534 | "minArgs": 1,
|
| 535 | "maxArgs": 2
|
| 536 | },
|
| 537 | "getAll": {
|
| 538 | "minArgs": 0,
|
| 539 | "maxArgs": 1
|
| 540 | },
|
| 541 | "getCurrent": {
|
| 542 | "minArgs": 0,
|
| 543 | "maxArgs": 1
|
| 544 | },
|
| 545 | "getLastFocused": {
|
| 546 | "minArgs": 0,
|
| 547 | "maxArgs": 1
|
| 548 | },
|
| 549 | "remove": {
|
| 550 | "minArgs": 1,
|
| 551 | "maxArgs": 1
|
| 552 | },
|
| 553 | "update": {
|
| 554 | "minArgs": 2,
|
| 555 | "maxArgs": 2
|
| 556 | }
|
| 557 | }
|
| 558 | };
|
| 559 |
|
| 560 | if (Object.keys(apiMetadata).length === 0) {
|
| 561 | throw new Error("api-metadata.json has not been included in browser-polyfill");
|
| 562 | }
|
| 563 |
|
| 564 | /**
|
| 565 | * A WeakMap subclass which creates and stores a value for any key which does
|
| 566 | * not exist when accessed, but behaves exactly as an ordinary WeakMap
|
| 567 | * otherwise.
|
| 568 | *
|
| 569 | * @param {function} createItem
|
| 570 | * A function which will be called in order to create the value for any
|
| 571 | * key which does not exist, the first time it is accessed. The
|
| 572 | * function receives, as its only argument, the key being created.
|
| 573 | */
|
| 574 | class DefaultWeakMap extends WeakMap {
|
| 575 | constructor(createItem, items = undefined) {
|
| 576 | super(items);
|
| 577 | this.createItem = createItem;
|
| 578 | }
|
| 579 |
|
| 580 | get(key) {
|
| 581 | if (!this.has(key)) {
|
| 582 | this.set(key, this.createItem(key));
|
| 583 | }
|
| 584 |
|
| 585 | return super.get(key);
|
| 586 | }
|
| 587 | }
|
| 588 |
|
| 589 | /**
|
| 590 | * Returns true if the given object is an object with a `then` method, and can
|
| 591 | * therefore be assumed to behave as a Promise.
|
| 592 | *
|
| 593 | * @param {*} value The value to test.
|
| 594 | * @returns {boolean} True if the value is thenable.
|
| 595 | */
|
| 596 | const isThenable = value => {
|
| 597 | return value && typeof value === "object" && typeof value.then === "function";
|
| 598 | };
|
| 599 |
|
| 600 | /**
|
| 601 | * Creates and returns a function which, when called, will resolve or reject
|
| 602 | * the given promise based on how it is called:
|
| 603 | *
|
| 604 | * - If, when called, `chrome.runtime.lastError` contains a non-null object,
|
| 605 | * the promise is rejected with that value.
|
| 606 | * - If the function is called with exactly one argument, the promise is
|
| 607 | * resolved to that value.
|
| 608 | * - Otherwise, the promise is resolved to an array containing all of the
|
| 609 | * function's arguments.
|
| 610 | *
|
| 611 | * @param {object} promise
|
| 612 | * An object containing the resolution and rejection functions of a
|
| 613 | * promise.
|
| 614 | * @param {function} promise.resolve
|
| 615 | * The promise's resolution function.
|
| 616 | * @param {function} promise.rejection
|
| 617 | * The promise's rejection function.
|
| 618 | * @param {object} metadata
|
| 619 | * Metadata about the wrapped method which has created the callback.
|
| 620 | * @param {integer} metadata.maxResolvedArgs
|
| 621 | * The maximum number of arguments which may be passed to the
|
| 622 | * callback created by the wrapped async function.
|
| 623 | *
|
| 624 | * @returns {function}
|
| 625 | * The generated callback function.
|
| 626 | */
|
| 627 | const makeCallback = (promise, metadata) => {
|
| 628 | return (...callbackArgs) => {
|
| 629 | if (chrome.runtime.lastError) {
|
| 630 | promise.reject(chrome.runtime.lastError);
|
| 631 | } else if (metadata.singleCallbackArg || callbackArgs.length === 1) {
|
| 632 | promise.resolve(callbackArgs[0]);
|
| 633 | } else {
|
| 634 | promise.resolve(callbackArgs);
|
| 635 | }
|
| 636 | };
|
| 637 | };
|
| 638 |
|
| 639 | /**
|
| 640 | * Creates a wrapper function for a method with the given name and metadata.
|
| 641 | *
|
| 642 | * @param {string} name
|
| 643 | * The name of the method which is being wrapped.
|
| 644 | * @param {object} metadata
|
| 645 | * Metadata about the method being wrapped.
|
| 646 | * @param {integer} metadata.minArgs
|
| 647 | * The minimum number of arguments which must be passed to the
|
| 648 | * function. If called with fewer than this number of arguments, the
|
| 649 | * wrapper will raise an exception.
|
| 650 | * @param {integer} metadata.maxArgs
|
| 651 | * The maximum number of arguments which may be passed to the
|
| 652 | * function. If called with more than this number of arguments, the
|
| 653 | * wrapper will raise an exception.
|
| 654 | * @param {integer} metadata.maxResolvedArgs
|
| 655 | * The maximum number of arguments which may be passed to the
|
| 656 | * callback created by the wrapped async function.
|
| 657 | *
|
| 658 | * @returns {function(object, ...*)}
|
| 659 | * The generated wrapper function.
|
| 660 | */
|
| 661 | const wrapAsyncFunction = (name, metadata) => {
|
| 662 | const pluralizeArguments = numArgs => numArgs == 1 ? "argument" : "arguments";
|
| 663 |
|
| 664 | return function asyncFunctionWrapper(target, ...args) {
|
| 665 | if (args.length < metadata.minArgs) {
|
| 666 | throw new Error(`Expected at least ${metadata.minArgs} ${pluralizeArguments(metadata.minArgs)} for ${name}(), got ${args.length}`);
|
| 667 | }
|
| 668 |
|
| 669 | if (args.length > metadata.maxArgs) {
|
| 670 | throw new Error(`Expected at most ${metadata.maxArgs} ${pluralizeArguments(metadata.maxArgs)} for ${name}(), got ${args.length}`);
|
| 671 | }
|
| 672 |
|
| 673 | return new Promise((resolve, reject) => {
|
| 674 | target[name](...args, makeCallback({ resolve, reject }, metadata));
|
| 675 | });
|
| 676 | };
|
| 677 | };
|
| 678 |
|
| 679 | /**
|
| 680 | * Wraps an existing method of the target object, so that calls to it are
|
| 681 | * intercepted by the given wrapper function. The wrapper function receives,
|
| 682 | * as its first argument, the original `target` object, followed by each of
|
| 683 | * the arguments passed to the orginal method.
|
| 684 | *
|
| 685 | * @param {object} target
|
| 686 | * The original target object that the wrapped method belongs to.
|
| 687 | * @param {function} method
|
| 688 | * The method being wrapped. This is used as the target of the Proxy
|
| 689 | * object which is created to wrap the method.
|
| 690 | * @param {function} wrapper
|
| 691 | * The wrapper function which is called in place of a direct invocation
|
| 692 | * of the wrapped method.
|
| 693 | *
|
| 694 | * @returns {Proxy<function>}
|
| 695 | * A Proxy object for the given method, which invokes the given wrapper
|
| 696 | * method in its place.
|
| 697 | */
|
| 698 | const wrapMethod = (target, method, wrapper) => {
|
| 699 | return new Proxy(method, {
|
| 700 | apply(targetMethod, thisObj, args) {
|
| 701 | return wrapper.call(thisObj, target, ...args);
|
| 702 | }
|
| 703 | });
|
| 704 | };
|
| 705 |
|
| 706 | let hasOwnProperty = Function.call.bind(Object.prototype.hasOwnProperty);
|
| 707 |
|
| 708 | /**
|
| 709 | * Wraps an object in a Proxy which intercepts and wraps certain methods
|
| 710 | * based on the given `wrappers` and `metadata` objects.
|
| 711 | *
|
| 712 | * @param {object} target
|
| 713 | * The target object to wrap.
|
| 714 | *
|
| 715 | * @param {object} [wrappers = {}]
|
| 716 | * An object tree containing wrapper functions for special cases. Any
|
| 717 | * function present in this object tree is called in place of the
|
| 718 | * method in the same location in the `target` object tree. These
|
| 719 | * wrapper methods are invoked as described in {@see wrapMethod}.
|
| 720 | *
|
| 721 | * @param {object} [metadata = {}]
|
| 722 | * An object tree containing metadata used to automatically generate
|
| 723 | * Promise-based wrapper functions for asynchronous. Any function in
|
| 724 | * the `target` object tree which has a corresponding metadata object
|
| 725 | * in the same location in the `metadata` tree is replaced with an
|
| 726 | * automatically-generated wrapper function, as described in
|
| 727 | * {@see wrapAsyncFunction}
|
| 728 | *
|
| 729 | * @returns {Proxy<object>}
|
| 730 | */
|
| 731 | const wrapObject = (target, wrappers = {}, metadata = {}) => {
|
| 732 | let cache = Object.create(null);
|
| 733 |
|
| 734 | let handlers = {
|
| 735 | has(target, prop) {
|
| 736 | return prop in target || prop in cache;
|
| 737 | },
|
| 738 |
|
| 739 | get(target, prop, receiver) {
|
| 740 | if (prop in cache) {
|
| 741 | return cache[prop];
|
| 742 | }
|
| 743 |
|
| 744 | if (!(prop in target)) {
|
| 745 | return undefined;
|
| 746 | }
|
| 747 |
|
| 748 | let value = target[prop];
|
| 749 |
|
| 750 | if (typeof value === "function") {
|
| 751 | // This is a method on the underlying object. Check if we need to do
|
| 752 | // any wrapping.
|
| 753 |
|
| 754 | if (typeof wrappers[prop] === "function") {
|
| 755 | // We have a special-case wrapper for this method.
|
| 756 | value = wrapMethod(target, target[prop], wrappers[prop]);
|
| 757 | } else if (hasOwnProperty(metadata, prop)) {
|
| 758 | // This is an async method that we have metadata for. Create a
|
| 759 | // Promise wrapper for it.
|
| 760 | let wrapper = wrapAsyncFunction(prop, metadata[prop]);
|
| 761 | value = wrapMethod(target, target[prop], wrapper);
|
| 762 | } else {
|
| 763 | // This is a method that we don't know or care about. Return the
|
| 764 | // original method, bound to the underlying object.
|
| 765 | value = value.bind(target);
|
| 766 | }
|
| 767 | } else if (typeof value === "object" && value !== null && (hasOwnProperty(wrappers, prop) || hasOwnProperty(metadata, prop))) {
|
| 768 | // This is an object that we need to do some wrapping for the children
|
| 769 | // of. Create a sub-object wrapper for it with the appropriate child
|
| 770 | // metadata.
|
| 771 | value = wrapObject(value, wrappers[prop], metadata[prop]);
|
| 772 | } else {
|
| 773 | // We don't need to do any wrapping for this property,
|
| 774 | // so just forward all access to the underlying object.
|
| 775 | Object.defineProperty(cache, prop, {
|
| 776 | configurable: true,
|
| 777 | enumerable: true,
|
| 778 | get() {
|
| 779 | return target[prop];
|
| 780 | },
|
| 781 | set(value) {
|
| 782 | target[prop] = value;
|
| 783 | }
|
| 784 | });
|
| 785 |
|
| 786 | return value;
|
| 787 | }
|
| 788 |
|
| 789 | cache[prop] = value;
|
| 790 | return value;
|
| 791 | },
|
| 792 |
|
| 793 | set(target, prop, value, receiver) {
|
| 794 | if (prop in cache) {
|
| 795 | cache[prop] = value;
|
| 796 | } else {
|
| 797 | target[prop] = value;
|
| 798 | }
|
| 799 | return true;
|
| 800 | },
|
| 801 |
|
| 802 | defineProperty(target, prop, desc) {
|
| 803 | return Reflect.defineProperty(cache, prop, desc);
|
| 804 | },
|
| 805 |
|
| 806 | deleteProperty(target, prop) {
|
| 807 | return Reflect.deleteProperty(cache, prop);
|
| 808 | }
|
| 809 | };
|
| 810 |
|
| 811 | return new Proxy(target, handlers);
|
| 812 | };
|
| 813 |
|
| 814 | /**
|
| 815 | * Creates a set of wrapper functions for an event object, which handles
|
| 816 | * wrapping of listener functions that those messages are passed.
|
| 817 | *
|
| 818 | * A single wrapper is created for each listener function, and stored in a
|
| 819 | * map. Subsequent calls to `addListener`, `hasListener`, or `removeListener`
|
| 820 | * retrieve the original wrapper, so that attempts to remove a
|
| 821 | * previously-added listener work as expected.
|
| 822 | *
|
| 823 | * @param {DefaultWeakMap<function, function>} wrapperMap
|
| 824 | * A DefaultWeakMap object which will create the appropriate wrapper
|
| 825 | * for a given listener function when one does not exist, and retrieve
|
| 826 | * an existing one when it does.
|
| 827 | *
|
| 828 | * @returns {object}
|
| 829 | */
|
| 830 | const wrapEvent = wrapperMap => ({
|
| 831 | addListener(target, listener, ...args) {
|
| 832 | target.addListener(wrapperMap.get(listener), ...args);
|
| 833 | },
|
| 834 |
|
| 835 | hasListener(target, listener) {
|
| 836 | return target.hasListener(wrapperMap.get(listener));
|
| 837 | },
|
| 838 |
|
| 839 | removeListener(target, listener) {
|
| 840 | target.removeListener(wrapperMap.get(listener));
|
| 841 | }
|
| 842 | });
|
| 843 |
|
| 844 | const onMessageWrappers = new DefaultWeakMap(listener => {
|
| 845 | if (typeof listener !== "function") {
|
| 846 | return listener;
|
| 847 | }
|
| 848 |
|
| 849 | /**
|
| 850 | * Wraps a message listener function so that it may send responses based on
|
| 851 | * its return value, rather than by returning a sentinel value and calling a
|
| 852 | * callback. If the listener function returns a Promise, the response is
|
| 853 | * sent when the promise either resolves or rejects.
|
| 854 | *
|
| 855 | * @param {*} message
|
| 856 | * The message sent by the other end of the channel.
|
| 857 | * @param {object} sender
|
| 858 | * Details about the sender of the message.
|
| 859 | * @param {function(*)} sendResponse
|
| 860 | * A callback which, when called with an arbitrary argument, sends
|
| 861 | * that value as a response.
|
| 862 | * @returns {boolean}
|
| 863 | * True if the wrapped listener returned a Promise, which will later
|
| 864 | * yield a response. False otherwise.
|
| 865 | */
|
| 866 | return function onMessage(message, sender, sendResponse) {
|
| 867 | let result = listener(message, sender);
|
| 868 |
|
| 869 | if (isThenable(result)) {
|
| 870 | result.then(sendResponse, error => {
|
| 871 | console.error(error);
|
| 872 | sendResponse(error);
|
| 873 | });
|
| 874 |
|
| 875 | return true;
|
| 876 | } else if (result !== undefined) {
|
| 877 | sendResponse(result);
|
| 878 | }
|
| 879 | };
|
| 880 | });
|
| 881 |
|
| 882 | const staticWrappers = {
|
| 883 | runtime: {
|
| 884 | onMessage: wrapEvent(onMessageWrappers)
|
| 885 | }
|
| 886 | };
|
| 887 |
|
| 888 | // Create a new empty object and copy the properties of the original chrome object
|
| 889 | // to prevent a Proxy violation exception for the devtools API getter
|
| 890 | // (which is a read-only non-configurable property on the original target).
|
| 891 | const targetObject = Object.assign({}, chrome);
|
| 892 |
|
| 893 | return wrapObject(targetObject, staticWrappers, apiMetadata);
|
| 894 | };
|
| 895 |
|
| 896 | // The build process adds a UMD wrapper around this file, which makes the
|
| 897 | // `module` variable available.
|
| 898 | module.exports = wrapAPIs(); // eslint-disable-line no-undef
|
| 899 | } else {
|
| 900 | module.exports = browser; // eslint-disable-line no-undef
|
| 901 | }
|
| 902 | });
|
| 903 | //# sourceMappingURL=browser-polyfill.js.map
|