-
Notifications
You must be signed in to change notification settings - Fork 24.2k
/
index.js
387 lines (342 loc) · 11.2 KB
/
index.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @flow
*/
'use strict';
const Cache = require('./Cache');
const DependencyGraphHelpers = require('./DependencyGraph/DependencyGraphHelpers');
const HasteMap = require('./DependencyGraph/HasteMap');
const JestHasteMap = require('jest-haste-map');
const Module = require('./Module');
const ModuleCache = require('./ModuleCache');
const Polyfill = require('./Polyfill');
const ResolutionRequest = require('./DependencyGraph/ResolutionRequest');
const ResolutionResponse = require('./DependencyGraph/ResolutionResponse');
const fs = require('fs');
const getAssetDataFromName = require('./lib/getAssetDataFromName');
const getInverseDependencies = require('./lib/getInverseDependencies');
const getPlatformExtension = require('./lib/getPlatformExtension');
const isAbsolutePath = require('absolute-path');
const os = require('os');
const path = require('path');
const replacePatterns = require('./lib/replacePatterns');
const util = require('util');
const {
createActionEndEntry,
createActionStartEntry,
log,
} = require('../Logger');
const {EventEmitter} = require('events');
import type {Options as TransformOptions} from '../JSTransformer/worker/worker';
import type GlobalTransformCache from '../lib/GlobalTransformCache';
import type {GetTransformCacheKey} from '../lib/TransformCache';
import type {Reporter} from '../lib/reporting';
import type {ModuleMap} from './DependencyGraph/ResolutionRequest';
import type {
Options as ModuleOptions,
TransformCode,
} from './Module';
import type {HasteFS} from './types';
const ERROR_BUILDING_DEP_GRAPH = 'DependencyGraphError';
type Options = {
assetDependencies: Array<string>,
assetExts: Array<string>,
cache: Cache,
extensions: Array<string>,
extraNodeModules: ?Object,
forceNodeFilesystemAPI: boolean,
getTransformCacheKey: GetTransformCacheKey,
globalTransformCache: ?GlobalTransformCache,
ignoreFilePath: (filePath: string) => boolean,
maxWorkers: ?number,
moduleOptions: ModuleOptions,
platforms: Set<string>,
preferNativePlatform: boolean,
providesModuleNodeModules: Array<string>,
reporter: Reporter,
resetCache: boolean,
roots: Array<string>,
transformCode: TransformCode,
useWatchman: boolean,
watch: boolean,
};
class DependencyGraph extends EventEmitter {
_opts: Options;
_haste: JestHasteMap;
_hasteFS: HasteFS;
_hasteMap: HasteMap;
_hasteMapError: ?Error;
_helpers: DependencyGraphHelpers;
_moduleCache: ModuleCache;
_moduleMap: ModuleMap;
_loading: Promise<void>;
constructor(opts: Options) {
super();
this._opts = {...opts};
this._helpers = new DependencyGraphHelpers(this._opts);
this.load();
}
load(): Promise<void> {
if (this._loading) {
return this._loading;
}
const mw = this._opts.maxWorkers;
this._haste = new JestHasteMap({
extensions: this._opts.extensions.concat(this._opts.assetExts),
forceNodeFilesystemAPI: this._opts.forceNodeFilesystemAPI,
ignorePattern: {test: this._opts.ignoreFilePath},
maxWorkers: typeof mw === 'number' && mw >= 1 ? mw : getMaxWorkers(),
mocksPattern: '',
name: 'react-native-packager',
platforms: Array.from(this._opts.platforms),
providesModuleNodeModules: this._opts.providesModuleNodeModules,
resetCache: this._opts.resetCache,
retainAllFiles: true,
roots: this._opts.roots,
useWatchman: this._opts.useWatchman,
watch: this._opts.watch,
});
const initializingPackagerLogEntry =
log(createActionStartEntry('Initializing Packager'));
this._opts.reporter.update({type: 'dep_graph_loading'});
this._loading = this._haste.build().then(({hasteFS, moduleMap}) => {
this._hasteFS = hasteFS;
this._moduleMap = moduleMap;
const hasteFSFiles = hasteFS.getAllFiles();
this._moduleCache = new ModuleCache({
cache: this._opts.cache,
getTransformCacheKey: this._opts.getTransformCacheKey,
globalTransformCache: this._opts.globalTransformCache,
transformCode: this._opts.transformCode,
depGraphHelpers: this._helpers,
assetDependencies: this._opts.assetDependencies,
moduleOptions: this._opts.moduleOptions,
reporter: this._opts.reporter,
getClosestPackage: filePath => {
const parsedPath = path.parse(filePath);
const root = parsedPath.root;
let dir = parsedPath.dir;
do {
const candidate = path.join(dir, 'package.json');
if (this._hasteFS.exists(candidate)) {
return candidate;
}
dir = path.dirname(dir);
} while (dir !== '.' && dir !== root);
return null;
},
}, this._opts.platforms);
this._hasteMap = new HasteMap({
files: hasteFSFiles,
extensions: this._opts.extensions,
moduleCache: this._moduleCache,
preferNativePlatform: this._opts.preferNativePlatform,
helpers: this._helpers,
platforms: this._opts.platforms,
});
this._haste.on('change', event => {
this._hasteFS = event.hasteFS;
this._moduleMap = event.moduleMap;
event.eventsQueue.forEach(({type, filePath, stat}) =>
this._onFileChange(type, filePath, stat)
);
this.emit('change');
});
const buildingHasteMapLogEntry =
log(createActionStartEntry('Building Haste Map'));
return this._hasteMap.build().then(
map => {
log(createActionEndEntry(buildingHasteMapLogEntry));
log(createActionEndEntry(initializingPackagerLogEntry));
this._opts.reporter.update({type: 'dep_graph_loaded'});
},
err => {
const error = new Error(
`Failed to build DependencyGraph: ${err.message}`
);
/* $FlowFixMe: monkey-patching */
error.type = ERROR_BUILDING_DEP_GRAPH;
error.stack = err.stack;
throw error;
}
);
});
return this._loading;
}
/**
* Returns a promise with the direct dependencies the module associated to
* the given entryPath has.
*/
getShallowDependencies(entryPath: string, transformOptions: TransformOptions) {
return this._moduleCache
.getModule(entryPath)
.getDependencies(transformOptions);
}
getWatcher() {
return this._haste;
}
/**
* Returns the module object for the given path.
*/
getModuleForPath(entryFile: string) {
return this._moduleCache.getModule(entryFile);
}
getAllModules() {
return this.load().then(() => this._moduleCache.getAllModules());
}
getDependencies({
entryPath,
platform,
transformOptions,
onProgress,
recursive = true,
}: {
entryPath: string,
platform: string,
transformOptions: TransformOptions,
onProgress?: ?(finishedModules: number, totalModules: number) => mixed,
recursive: boolean,
}) {
return this.load().then(() => {
platform = this._getRequestPlatform(entryPath, platform);
const absPath = this._getAbsolutePath(entryPath);
const dirExists = filePath => {
try {
return fs.lstatSync(filePath).isDirectory();
} catch (e) {}
return false;
};
const req = new ResolutionRequest({
dirExists,
entryPath: absPath,
extraNodeModules: this._opts.extraNodeModules,
hasteFS: this._hasteFS,
helpers: this._helpers,
moduleCache: this._moduleCache,
moduleMap: this._moduleMap,
platform,
platforms: this._opts.platforms,
preferNativePlatform: this._opts.preferNativePlatform,
});
const response = new ResolutionResponse({transformOptions});
return req.getOrderedDependencies({
response,
transformOptions,
onProgress,
recursive,
}).then(() => response);
});
}
matchFilesByPattern(pattern: RegExp) {
return this.load().then(() => this._hasteFS.matchFiles(pattern));
}
_getRequestPlatform(entryPath: string, platform: string) {
if (platform == null) {
platform = getPlatformExtension(entryPath, this._opts.platforms);
} else if (!this._opts.platforms.has(platform)) {
throw new Error('Unrecognized platform: ' + platform);
}
return platform;
}
_getAbsolutePath(filePath: string) {
if (isAbsolutePath(filePath)) {
return path.resolve(filePath);
}
for (let i = 0; i < this._opts.roots.length; i++) {
const root = this._opts.roots[i];
const potentialAbsPath = path.join(root, filePath);
if (this._hasteFS.exists(potentialAbsPath)) {
return path.resolve(potentialAbsPath);
}
}
throw new NotFoundError(
'Cannot find entry file %s in any of the roots: %j',
filePath,
this._opts.roots
);
}
_onFileChange(type: string, filePath: string, stat: Object) {
this._moduleCache.processFileChange(type, filePath, stat);
// This code reports failures but doesn't block recovery in the dev server
// mode. When the hasteMap is left in an incorrect state, we'll rebuild when
// the next file changes.
const resolve = () => {
if (this._hasteMapError) {
console.warn(
'Rebuilding haste map to recover from error:\n' +
this._hasteMapError.stack
);
this._hasteMapError = null;
// Rebuild the entire map if last change resulted in an error.
this._loading = this._hasteMap.build().then(() => {});
} else {
this._loading = this._hasteMap.processFileChange(type, filePath);
this._loading.catch(error => {
this._hasteMapError = error;
});
}
return this._loading;
};
this._loading = this._loading.then(resolve, resolve);
}
createPolyfill(options: {file: string}) {
return this._moduleCache.createPolyfill(options);
}
getHasteMap() {
return this._hasteMap;
}
static Cache;
static Module;
static Polyfill;
static getAssetDataFromName;
static getPlatformExtension;
static replacePatterns;
static getInverseDependencies;
}
Object.assign(DependencyGraph, {
Cache,
Module,
Polyfill,
getAssetDataFromName,
getPlatformExtension,
replacePatterns,
getInverseDependencies,
});
function NotFoundError() {
/* $FlowFixMe: monkey-patching */
Error.call(this);
Error.captureStackTrace(this, this.constructor);
var msg = util.format.apply(util, arguments);
this.message = msg;
this.type = this.name = 'NotFoundError';
this.status = 404;
}
util.inherits(NotFoundError, Error);
function getMaxWorkers() {
const cores = os.cpus().length;
if (cores <= 1) {
// oh well...
return 1;
}
if (cores <= 4) {
// don't starve the CPU while still reading reasonably rapidly
return cores - 1;
}
if (cores <= 8) {
// empirical testing showed massive diminishing returns when going over
// 4 or 5 workers on 8-core machines
return Math.floor(cores * 0.75) - 1;
}
// pretty much guesswork
if (cores < 24) {
return Math.floor(3 / 8 * cores + 3);
}
return cores / 2;
}
module.exports = DependencyGraph;