1 |
3a515b92
|
cagy
|
<div align="center">
|
2 |
|
|
<a href="https://github.com/webpack/webpack">
|
3 |
|
|
<img width="200" height="200" src="https://webpack.js.org/assets/icon-square-big.svg">
|
4 |
|
|
</a>
|
5 |
|
|
</div>
|
6 |
|
|
|
7 |
|
|
[![npm][npm]][npm-url]
|
8 |
|
|
[![node][node]][node-url]
|
9 |
|
|
[![deps][deps]][deps-url]
|
10 |
|
|
[![tests][tests]][tests-url]
|
11 |
|
|
[![cover][cover]][cover-url]
|
12 |
|
|
[![chat][chat]][chat-url]
|
13 |
|
|
[![size][size]][size-url]
|
14 |
|
|
|
15 |
|
|
# terser-webpack-plugin
|
16 |
|
|
|
17 |
|
|
This plugin uses [terser](https://github.com/terser-js/terser) to minify your JavaScript.
|
18 |
|
|
|
19 |
|
|
> ℹ️ For `webpack@3` use [terser-webpack-plugin-legacy](https://www.npmjs.com/package/terser-webpack-plugin-legacy) package
|
20 |
|
|
|
21 |
|
|
## Getting Started
|
22 |
|
|
|
23 |
|
|
To begin, you'll need to install `terser-webpack-plugin`:
|
24 |
|
|
|
25 |
|
|
```console
|
26 |
|
|
$ npm install terser-webpack-plugin --save-dev
|
27 |
|
|
```
|
28 |
|
|
|
29 |
|
|
Then add the plugin to your `webpack` config. For example:
|
30 |
|
|
|
31 |
|
|
**webpack.config.js**
|
32 |
|
|
|
33 |
|
|
```js
|
34 |
|
|
const TerserPlugin = require('terser-webpack-plugin');
|
35 |
|
|
|
36 |
|
|
module.exports = {
|
37 |
|
|
optimization: {
|
38 |
|
|
minimizer: [new TerserPlugin()],
|
39 |
|
|
},
|
40 |
|
|
};
|
41 |
|
|
```
|
42 |
|
|
|
43 |
|
|
And run `webpack` via your preferred method.
|
44 |
|
|
|
45 |
|
|
## Options
|
46 |
|
|
|
47 |
|
|
### `test`
|
48 |
|
|
|
49 |
|
|
Type: `String|RegExp|Array<String|RegExp>`
|
50 |
|
|
Default: `/\.m?js(\?.*)?$/i`
|
51 |
|
|
|
52 |
|
|
Test to match files against.
|
53 |
|
|
|
54 |
|
|
**webpack.config.js**
|
55 |
|
|
|
56 |
|
|
```js
|
57 |
|
|
module.exports = {
|
58 |
|
|
optimization: {
|
59 |
|
|
minimizer: [
|
60 |
|
|
new TerserPlugin({
|
61 |
|
|
test: /\.js(\?.*)?$/i,
|
62 |
|
|
}),
|
63 |
|
|
],
|
64 |
|
|
},
|
65 |
|
|
};
|
66 |
|
|
```
|
67 |
|
|
|
68 |
|
|
### `include`
|
69 |
|
|
|
70 |
|
|
Type: `String|RegExp|Array<String|RegExp>`
|
71 |
|
|
Default: `undefined`
|
72 |
|
|
|
73 |
|
|
Files to include.
|
74 |
|
|
|
75 |
|
|
**webpack.config.js**
|
76 |
|
|
|
77 |
|
|
```js
|
78 |
|
|
module.exports = {
|
79 |
|
|
optimization: {
|
80 |
|
|
minimizer: [
|
81 |
|
|
new TerserPlugin({
|
82 |
|
|
include: /\/includes/,
|
83 |
|
|
}),
|
84 |
|
|
],
|
85 |
|
|
},
|
86 |
|
|
};
|
87 |
|
|
```
|
88 |
|
|
|
89 |
|
|
### `exclude`
|
90 |
|
|
|
91 |
|
|
Type: `String|RegExp|Array<String|RegExp>`
|
92 |
|
|
Default: `undefined`
|
93 |
|
|
|
94 |
|
|
Files to exclude.
|
95 |
|
|
|
96 |
|
|
**webpack.config.js**
|
97 |
|
|
|
98 |
|
|
```js
|
99 |
|
|
module.exports = {
|
100 |
|
|
optimization: {
|
101 |
|
|
minimizer: [
|
102 |
|
|
new TerserPlugin({
|
103 |
|
|
exclude: /\/excludes/,
|
104 |
|
|
}),
|
105 |
|
|
],
|
106 |
|
|
},
|
107 |
|
|
};
|
108 |
|
|
```
|
109 |
|
|
|
110 |
|
|
### `chunkFilter`
|
111 |
|
|
|
112 |
|
|
Type: `Function<(chunk) -> boolean>`
|
113 |
|
|
Default: `() => true`
|
114 |
|
|
|
115 |
|
|
Allowing to filter which chunks should be uglified (by default all chunks are uglified).
|
116 |
|
|
Return `true` to uglify the chunk, `false` otherwise.
|
117 |
|
|
|
118 |
|
|
**webpack.config.js**
|
119 |
|
|
|
120 |
|
|
```js
|
121 |
|
|
module.exports = {
|
122 |
|
|
optimization: {
|
123 |
|
|
minimizer: [
|
124 |
|
|
new TerserPlugin({
|
125 |
|
|
chunkFilter: (chunk) => {
|
126 |
|
|
// Exclude uglification for the `vendor` chunk
|
127 |
|
|
if (chunk.name === 'vendor') {
|
128 |
|
|
return false;
|
129 |
|
|
}
|
130 |
|
|
|
131 |
|
|
return true;
|
132 |
|
|
},
|
133 |
|
|
}),
|
134 |
|
|
],
|
135 |
|
|
},
|
136 |
|
|
};
|
137 |
|
|
```
|
138 |
|
|
|
139 |
|
|
### `cache`
|
140 |
|
|
|
141 |
|
|
Type: `Boolean|String`
|
142 |
|
|
Default: `false`
|
143 |
|
|
|
144 |
|
|
Enable file caching.
|
145 |
|
|
Default path to cache directory: `node_modules/.cache/terser-webpack-plugin`.
|
146 |
|
|
|
147 |
|
|
> ℹ️ If you use your own `minify` function please read the `minify` section for cache invalidation correctly.
|
148 |
|
|
|
149 |
|
|
#### `Boolean`
|
150 |
|
|
|
151 |
|
|
Enable/disable file caching.
|
152 |
|
|
|
153 |
|
|
**webpack.config.js**
|
154 |
|
|
|
155 |
|
|
```js
|
156 |
|
|
module.exports = {
|
157 |
|
|
optimization: {
|
158 |
|
|
minimizer: [
|
159 |
|
|
new TerserPlugin({
|
160 |
|
|
cache: true,
|
161 |
|
|
}),
|
162 |
|
|
],
|
163 |
|
|
},
|
164 |
|
|
};
|
165 |
|
|
```
|
166 |
|
|
|
167 |
|
|
#### `String`
|
168 |
|
|
|
169 |
|
|
Enable file caching and set path to cache directory.
|
170 |
|
|
|
171 |
|
|
**webpack.config.js**
|
172 |
|
|
|
173 |
|
|
```js
|
174 |
|
|
module.exports = {
|
175 |
|
|
optimization: {
|
176 |
|
|
minimizer: [
|
177 |
|
|
new TerserPlugin({
|
178 |
|
|
cache: 'path/to/cache',
|
179 |
|
|
}),
|
180 |
|
|
],
|
181 |
|
|
},
|
182 |
|
|
};
|
183 |
|
|
```
|
184 |
|
|
|
185 |
|
|
### `cacheKeys`
|
186 |
|
|
|
187 |
|
|
Type: `Function<(defaultCacheKeys, file) -> Object>`
|
188 |
|
|
Default: `defaultCacheKeys => defaultCacheKeys`
|
189 |
|
|
|
190 |
|
|
Allows you to override default cache keys.
|
191 |
|
|
|
192 |
|
|
Default cache keys:
|
193 |
|
|
|
194 |
|
|
```js
|
195 |
|
|
({
|
196 |
|
|
terser: require('terser/package.json').version, // terser version
|
197 |
|
|
'terser-webpack-plugin': require('../package.json').version, // plugin version
|
198 |
|
|
'terser-webpack-plugin-options': this.options, // plugin options
|
199 |
|
|
path: compiler.outputPath ? `${compiler.outputPath}/${file}` : file, // asset path
|
200 |
|
|
hash: crypto
|
201 |
|
|
.createHash('md4')
|
202 |
|
|
.update(input)
|
203 |
|
|
.digest('hex'), // source file hash
|
204 |
|
|
});
|
205 |
|
|
```
|
206 |
|
|
|
207 |
|
|
**webpack.config.js**
|
208 |
|
|
|
209 |
|
|
```js
|
210 |
|
|
module.exports = {
|
211 |
|
|
optimization: {
|
212 |
|
|
minimizer: [
|
213 |
|
|
new TerserPlugin({
|
214 |
|
|
cache: true,
|
215 |
|
|
cacheKeys: (defaultCacheKeys, file) => {
|
216 |
|
|
defaultCacheKeys.myCacheKey = 'myCacheKeyValue';
|
217 |
|
|
|
218 |
|
|
return defaultCacheKeys;
|
219 |
|
|
},
|
220 |
|
|
}),
|
221 |
|
|
],
|
222 |
|
|
},
|
223 |
|
|
};
|
224 |
|
|
```
|
225 |
|
|
|
226 |
|
|
### `parallel`
|
227 |
|
|
|
228 |
|
|
Type: `Boolean|Number`
|
229 |
|
|
Default: `false`
|
230 |
|
|
|
231 |
|
|
Use multi-process parallel running to improve the build speed.
|
232 |
|
|
Default number of concurrent runs: `os.cpus().length - 1`.
|
233 |
|
|
|
234 |
|
|
> ℹ️ Parallelization can speedup your build significantly and is therefore **highly recommended**.
|
235 |
|
|
|
236 |
|
|
#### `Boolean`
|
237 |
|
|
|
238 |
|
|
Enable/disable multi-process parallel running.
|
239 |
|
|
|
240 |
|
|
**webpack.config.js**
|
241 |
|
|
|
242 |
|
|
```js
|
243 |
|
|
module.exports = {
|
244 |
|
|
optimization: {
|
245 |
|
|
minimizer: [
|
246 |
|
|
new TerserPlugin({
|
247 |
|
|
parallel: true,
|
248 |
|
|
}),
|
249 |
|
|
],
|
250 |
|
|
},
|
251 |
|
|
};
|
252 |
|
|
```
|
253 |
|
|
|
254 |
|
|
#### `Number`
|
255 |
|
|
|
256 |
|
|
Enable multi-process parallel running and set number of concurrent runs.
|
257 |
|
|
|
258 |
|
|
**webpack.config.js**
|
259 |
|
|
|
260 |
|
|
```js
|
261 |
|
|
module.exports = {
|
262 |
|
|
optimization: {
|
263 |
|
|
minimizer: [
|
264 |
|
|
new TerserPlugin({
|
265 |
|
|
parallel: 4,
|
266 |
|
|
}),
|
267 |
|
|
],
|
268 |
|
|
},
|
269 |
|
|
};
|
270 |
|
|
```
|
271 |
|
|
|
272 |
|
|
### `sourceMap`
|
273 |
|
|
|
274 |
|
|
Type: `Boolean`
|
275 |
|
|
Default: `false`
|
276 |
|
|
|
277 |
|
|
Use source maps to map error message locations to modules (this slows down the compilation).
|
278 |
|
|
If you use your own `minify` function please read the `minify` section for handling source maps correctly.
|
279 |
|
|
|
280 |
|
|
> ⚠️ **`cheap-source-map` options don't work with this plugin**.
|
281 |
|
|
|
282 |
|
|
**webpack.config.js**
|
283 |
|
|
|
284 |
|
|
```js
|
285 |
|
|
module.exports = {
|
286 |
|
|
optimization: {
|
287 |
|
|
minimizer: [
|
288 |
|
|
new TerserPlugin({
|
289 |
|
|
sourceMap: true,
|
290 |
|
|
}),
|
291 |
|
|
],
|
292 |
|
|
},
|
293 |
|
|
};
|
294 |
|
|
```
|
295 |
|
|
|
296 |
|
|
### `minify`
|
297 |
|
|
|
298 |
|
|
Type: `Function`
|
299 |
|
|
Default: `undefined`
|
300 |
|
|
|
301 |
|
|
Allows you to override default minify function.
|
302 |
|
|
By default plugin uses [terser](https://github.com/terser-js/terser) package.
|
303 |
|
|
Useful for using and testing unpublished versions or forks.
|
304 |
|
|
|
305 |
|
|
> ⚠️ **Always use `require` inside `minify` function when `parallel` option enabled**.
|
306 |
|
|
|
307 |
|
|
**webpack.config.js**
|
308 |
|
|
|
309 |
|
|
```js
|
310 |
|
|
module.exports = {
|
311 |
|
|
optimization: {
|
312 |
|
|
minimizer: [
|
313 |
|
|
new TerserPlugin({
|
314 |
|
|
minify: (file, sourceMap) => {
|
315 |
|
|
const extractedComments = [];
|
316 |
|
|
|
317 |
|
|
// Custom logic for extract comments
|
318 |
|
|
|
319 |
|
|
const { error, map, code, warnings } = require('uglify-module') // Or require('./path/to/uglify-module')
|
320 |
|
|
.minify(file, {
|
321 |
|
|
/* Your options for minification */
|
322 |
|
|
});
|
323 |
|
|
|
324 |
|
|
return { error, map, code, warnings, extractedComments };
|
325 |
|
|
},
|
326 |
|
|
}),
|
327 |
|
|
],
|
328 |
|
|
},
|
329 |
|
|
};
|
330 |
|
|
```
|
331 |
|
|
|
332 |
|
|
### `terserOptions`
|
333 |
|
|
|
334 |
|
|
Type: `Object`
|
335 |
|
|
Default: [default](https://github.com/terser-js/terser#minify-options)
|
336 |
|
|
|
337 |
|
|
Terser minify [options](https://github.com/terser-js/terser#minify-options).
|
338 |
|
|
|
339 |
|
|
**webpack.config.js**
|
340 |
|
|
|
341 |
|
|
```js
|
342 |
|
|
module.exports = {
|
343 |
|
|
optimization: {
|
344 |
|
|
minimizer: [
|
345 |
|
|
new TerserPlugin({
|
346 |
|
|
terserOptions: {
|
347 |
|
|
ecma: undefined,
|
348 |
|
|
warnings: false,
|
349 |
|
|
parse: {},
|
350 |
|
|
compress: {},
|
351 |
|
|
mangle: true, // Note `mangle.properties` is `false` by default.
|
352 |
|
|
module: false,
|
353 |
|
|
output: null,
|
354 |
|
|
toplevel: false,
|
355 |
|
|
nameCache: null,
|
356 |
|
|
ie8: false,
|
357 |
|
|
keep_classnames: undefined,
|
358 |
|
|
keep_fnames: false,
|
359 |
|
|
safari10: false,
|
360 |
|
|
},
|
361 |
|
|
}),
|
362 |
|
|
],
|
363 |
|
|
},
|
364 |
|
|
};
|
365 |
|
|
```
|
366 |
|
|
|
367 |
|
|
### `extractComments`
|
368 |
|
|
|
369 |
|
|
Type: `Boolean|String|RegExp|Function<(node, comment) -> Boolean|Object>|Object`
|
370 |
|
|
Default: `false`
|
371 |
|
|
|
372 |
|
|
Whether comments shall be extracted to a separate file, (see [details](https://github.com/webpack/webpack/commit/71933e979e51c533b432658d5e37917f9e71595a)).
|
373 |
|
|
By default extract only comments using `/^\**!|@preserve|@license|@cc_on/i` regexp condition and remove remaining comments.
|
374 |
|
|
If the original file is named `foo.js`, then the comments will be stored to `foo.js.LICENSE`.
|
375 |
|
|
The `terserOptions.output.comments` option specifies whether the comment will be preserved, i.e. it is possible to preserve some comments (e.g. annotations) while extracting others or even preserving comments that have been extracted.
|
376 |
|
|
|
377 |
|
|
#### `Boolean`
|
378 |
|
|
|
379 |
|
|
Enable/disable extracting comments.
|
380 |
|
|
|
381 |
|
|
**webpack.config.js**
|
382 |
|
|
|
383 |
|
|
```js
|
384 |
|
|
module.exports = {
|
385 |
|
|
optimization: {
|
386 |
|
|
minimizer: [
|
387 |
|
|
new TerserPlugin({
|
388 |
|
|
extractComments: true,
|
389 |
|
|
}),
|
390 |
|
|
],
|
391 |
|
|
},
|
392 |
|
|
};
|
393 |
|
|
```
|
394 |
|
|
|
395 |
|
|
#### `String`
|
396 |
|
|
|
397 |
|
|
Extract `all` or `some` (use `/^\**!|@preserve|@license|@cc_on/i` RegExp) comments.
|
398 |
|
|
|
399 |
|
|
**webpack.config.js**
|
400 |
|
|
|
401 |
|
|
```js
|
402 |
|
|
module.exports = {
|
403 |
|
|
optimization: {
|
404 |
|
|
minimizer: [
|
405 |
|
|
new TerserPlugin({
|
406 |
|
|
extractComments: 'all',
|
407 |
|
|
}),
|
408 |
|
|
],
|
409 |
|
|
},
|
410 |
|
|
};
|
411 |
|
|
```
|
412 |
|
|
|
413 |
|
|
#### `RegExp`
|
414 |
|
|
|
415 |
|
|
All comments that match the given expression will be extracted to the separate file.
|
416 |
|
|
|
417 |
|
|
**webpack.config.js**
|
418 |
|
|
|
419 |
|
|
```js
|
420 |
|
|
module.exports = {
|
421 |
|
|
optimization: {
|
422 |
|
|
minimizer: [
|
423 |
|
|
new TerserPlugin({
|
424 |
|
|
extractComments: /@extract/i,
|
425 |
|
|
}),
|
426 |
|
|
],
|
427 |
|
|
},
|
428 |
|
|
};
|
429 |
|
|
```
|
430 |
|
|
|
431 |
|
|
#### `Function<(node, comment) -> Boolean>`
|
432 |
|
|
|
433 |
|
|
All comments that match the given expression will be extracted to the separate file.
|
434 |
|
|
|
435 |
|
|
**webpack.config.js**
|
436 |
|
|
|
437 |
|
|
```js
|
438 |
|
|
module.exports = {
|
439 |
|
|
optimization: {
|
440 |
|
|
minimizer: [
|
441 |
|
|
new TerserPlugin({
|
442 |
|
|
extractComments: (astNode, comment) => {
|
443 |
|
|
if (/@extract/i.test(comment.value)) {
|
444 |
|
|
return true;
|
445 |
|
|
}
|
446 |
|
|
|
447 |
|
|
return false;
|
448 |
|
|
},
|
449 |
|
|
}),
|
450 |
|
|
],
|
451 |
|
|
},
|
452 |
|
|
};
|
453 |
|
|
```
|
454 |
|
|
|
455 |
|
|
#### `Object`
|
456 |
|
|
|
457 |
|
|
Allow to customize condition for extract comments, specify extracted file name and banner.
|
458 |
|
|
|
459 |
|
|
**webpack.config.js**
|
460 |
|
|
|
461 |
|
|
```js
|
462 |
|
|
module.exports = {
|
463 |
|
|
optimization: {
|
464 |
|
|
minimizer: [
|
465 |
|
|
new TerserPlugin({
|
466 |
|
|
extractComments: {
|
467 |
|
|
condition: /^\**!|@preserve|@license|@cc_on/i,
|
468 |
|
|
filename: (file) => {
|
469 |
|
|
return `${file}.LICENSE`;
|
470 |
|
|
},
|
471 |
|
|
banner: (licenseFile) => {
|
472 |
|
|
return `License information can be found in ${licenseFile}`;
|
473 |
|
|
},
|
474 |
|
|
},
|
475 |
|
|
}),
|
476 |
|
|
],
|
477 |
|
|
},
|
478 |
|
|
};
|
479 |
|
|
```
|
480 |
|
|
|
481 |
|
|
##### `condition`
|
482 |
|
|
|
483 |
|
|
Type: `Boolean|String|RegExp|Function<(node, comment) -> Boolean|Object>`
|
484 |
|
|
|
485 |
|
|
Condition what comments you need extract.
|
486 |
|
|
|
487 |
|
|
**webpack.config.js**
|
488 |
|
|
|
489 |
|
|
```js
|
490 |
|
|
module.exports = {
|
491 |
|
|
optimization: {
|
492 |
|
|
minimizer: [
|
493 |
|
|
new TerserPlugin({
|
494 |
|
|
extractComments: {
|
495 |
|
|
condition: 'some',
|
496 |
|
|
filename: (file) => {
|
497 |
|
|
return `${file}.LICENSE`;
|
498 |
|
|
},
|
499 |
|
|
banner: (licenseFile) => {
|
500 |
|
|
return `License information can be found in ${licenseFile}`;
|
501 |
|
|
},
|
502 |
|
|
},
|
503 |
|
|
}),
|
504 |
|
|
],
|
505 |
|
|
},
|
506 |
|
|
};
|
507 |
|
|
```
|
508 |
|
|
|
509 |
|
|
##### `filename`
|
510 |
|
|
|
511 |
|
|
Type: `String|Function<(string) -> String>`
|
512 |
|
|
Default: `${file}.LICENSE`
|
513 |
|
|
|
514 |
|
|
The file where the extracted comments will be stored.
|
515 |
|
|
Default is to append the suffix `.LICENSE` to the original filename.
|
516 |
|
|
|
517 |
|
|
**webpack.config.js**
|
518 |
|
|
|
519 |
|
|
```js
|
520 |
|
|
module.exports = {
|
521 |
|
|
optimization: {
|
522 |
|
|
minimizer: [
|
523 |
|
|
new TerserPlugin({
|
524 |
|
|
extractComments: {
|
525 |
|
|
condition: /^\**!|@preserve|@license|@cc_on/i,
|
526 |
|
|
filename: 'extracted-comments.js',
|
527 |
|
|
banner: (licenseFile) => {
|
528 |
|
|
return `License information can be found in ${licenseFile}`;
|
529 |
|
|
},
|
530 |
|
|
},
|
531 |
|
|
}),
|
532 |
|
|
],
|
533 |
|
|
},
|
534 |
|
|
};
|
535 |
|
|
```
|
536 |
|
|
|
537 |
|
|
##### `banner`
|
538 |
|
|
|
539 |
|
|
Type: `Boolean|String|Function<(string) -> String>`
|
540 |
|
|
Default: `/*! For license information please see ${commentsFile} */`
|
541 |
|
|
|
542 |
|
|
The banner text that points to the extracted file and will be added on top of the original file.
|
543 |
|
|
Can be `false` (no banner), a `String`, or a `Function<(string) -> String>` that will be called with the filename where extracted comments have been stored.
|
544 |
|
|
Will be wrapped into comment.
|
545 |
|
|
|
546 |
|
|
**webpack.config.js**
|
547 |
|
|
|
548 |
|
|
```js
|
549 |
|
|
module.exports = {
|
550 |
|
|
optimization: {
|
551 |
|
|
minimizer: [
|
552 |
|
|
new TerserPlugin({
|
553 |
|
|
extractComments: {
|
554 |
|
|
condition: true,
|
555 |
|
|
filename: (file) => {
|
556 |
|
|
return `${file}.LICENSE`;
|
557 |
|
|
},
|
558 |
|
|
banner: (commentsFile) => {
|
559 |
|
|
return `My custom banner about license information ${commentsFile}`;
|
560 |
|
|
},
|
561 |
|
|
},
|
562 |
|
|
}),
|
563 |
|
|
],
|
564 |
|
|
},
|
565 |
|
|
};
|
566 |
|
|
```
|
567 |
|
|
|
568 |
|
|
### `warningsFilter`
|
569 |
|
|
|
570 |
|
|
Type: `Function<(warning, source) -> Boolean>`
|
571 |
|
|
Default: `() => true`
|
572 |
|
|
|
573 |
|
|
Allow to filter [terser](https://github.com/terser-js/terser) warnings.
|
574 |
|
|
Return `true` to keep the warning, `false` otherwise.
|
575 |
|
|
|
576 |
|
|
**webpack.config.js**
|
577 |
|
|
|
578 |
|
|
```js
|
579 |
|
|
module.exports = {
|
580 |
|
|
optimization: {
|
581 |
|
|
minimizer: [
|
582 |
|
|
new TerserPlugin({
|
583 |
|
|
warningsFilter: (warning, source) => {
|
584 |
|
|
if (/Dropping unreachable code/i.test(warning)) {
|
585 |
|
|
return true;
|
586 |
|
|
}
|
587 |
|
|
|
588 |
|
|
if (/filename\.js/i.test(source)) {
|
589 |
|
|
return true;
|
590 |
|
|
}
|
591 |
|
|
|
592 |
|
|
return false;
|
593 |
|
|
},
|
594 |
|
|
}),
|
595 |
|
|
],
|
596 |
|
|
},
|
597 |
|
|
};
|
598 |
|
|
```
|
599 |
|
|
|
600 |
|
|
## Examples
|
601 |
|
|
|
602 |
|
|
### Cache And Parallel
|
603 |
|
|
|
604 |
|
|
Enable cache and multi-process parallel running.
|
605 |
|
|
|
606 |
|
|
**webpack.config.js**
|
607 |
|
|
|
608 |
|
|
```js
|
609 |
|
|
module.exports = {
|
610 |
|
|
optimization: {
|
611 |
|
|
minimizer: [
|
612 |
|
|
new TerserPlugin({
|
613 |
|
|
cache: true,
|
614 |
|
|
parallel: true,
|
615 |
|
|
}),
|
616 |
|
|
],
|
617 |
|
|
},
|
618 |
|
|
};
|
619 |
|
|
```
|
620 |
|
|
|
621 |
|
|
### Preserve Comments
|
622 |
|
|
|
623 |
|
|
Extract all legal comments (i.e. `/^\**!|@preserve|@license|@cc_on/i`) and preserve `/@license/i` comments.
|
624 |
|
|
|
625 |
|
|
**webpack.config.js**
|
626 |
|
|
|
627 |
|
|
```js
|
628 |
|
|
module.exports = {
|
629 |
|
|
optimization: {
|
630 |
|
|
minimizer: [
|
631 |
|
|
new TerserPlugin({
|
632 |
|
|
terserOptions: {
|
633 |
|
|
output: {
|
634 |
|
|
comments: /@license/i,
|
635 |
|
|
},
|
636 |
|
|
},
|
637 |
|
|
extractComments: true,
|
638 |
|
|
}),
|
639 |
|
|
],
|
640 |
|
|
},
|
641 |
|
|
};
|
642 |
|
|
```
|
643 |
|
|
|
644 |
|
|
### Remove Comments
|
645 |
|
|
|
646 |
|
|
If you avoid building with comments, set **terserOptions.output.comments** to **false** as in this config:
|
647 |
|
|
|
648 |
|
|
**webpack.config.js**
|
649 |
|
|
|
650 |
|
|
```js
|
651 |
|
|
module.exports = {
|
652 |
|
|
optimization: {
|
653 |
|
|
minimizer: [
|
654 |
|
|
new TerserPlugin({
|
655 |
|
|
terserOptions: {
|
656 |
|
|
output: {
|
657 |
|
|
comments: false,
|
658 |
|
|
},
|
659 |
|
|
},
|
660 |
|
|
}),
|
661 |
|
|
],
|
662 |
|
|
},
|
663 |
|
|
};
|
664 |
|
|
```
|
665 |
|
|
|
666 |
|
|
### Custom Minify Function
|
667 |
|
|
|
668 |
|
|
Override default minify function - use `uglify-js` for minification.
|
669 |
|
|
|
670 |
|
|
**webpack.config.js**
|
671 |
|
|
|
672 |
|
|
```js
|
673 |
|
|
module.exports = {
|
674 |
|
|
optimization: {
|
675 |
|
|
minimizer: [
|
676 |
|
|
new TerserPlugin({
|
677 |
|
|
// Uncomment lines below for cache invalidation correctly
|
678 |
|
|
// cache: true,
|
679 |
|
|
// cacheKeys: (defaultCacheKeys) => {
|
680 |
|
|
// delete defaultCacheKeys.terser;
|
681 |
|
|
//
|
682 |
|
|
// return Object.assign(
|
683 |
|
|
// {},
|
684 |
|
|
// defaultCacheKeys,
|
685 |
|
|
// { 'uglify-js': require('uglify-js/package.json').version },
|
686 |
|
|
// );
|
687 |
|
|
// },
|
688 |
|
|
minify: (file, sourceMap) => {
|
689 |
|
|
// https://github.com/mishoo/UglifyJS2#minify-options
|
690 |
|
|
const uglifyJsOptions = {
|
691 |
|
|
/* your `uglify-js` package options */
|
692 |
|
|
};
|
693 |
|
|
|
694 |
|
|
if (sourceMap) {
|
695 |
|
|
uglifyJsOptions.sourceMap = {
|
696 |
|
|
content: sourceMap,
|
697 |
|
|
};
|
698 |
|
|
}
|
699 |
|
|
|
700 |
|
|
return require('uglify-js').minify(file, uglifyJsOptions);
|
701 |
|
|
},
|
702 |
|
|
}),
|
703 |
|
|
],
|
704 |
|
|
},
|
705 |
|
|
};
|
706 |
|
|
```
|
707 |
|
|
|
708 |
|
|
## Contributing
|
709 |
|
|
|
710 |
|
|
Please take a moment to read our contributing guidelines if you haven't yet done so.
|
711 |
|
|
|
712 |
|
|
[CONTRIBUTING](./.github/CONTRIBUTING.md)
|
713 |
|
|
|
714 |
|
|
## License
|
715 |
|
|
|
716 |
|
|
[MIT](./LICENSE)
|
717 |
|
|
|
718 |
|
|
[npm]: https://img.shields.io/npm/v/terser-webpack-plugin.svg
|
719 |
|
|
[npm-url]: https://npmjs.com/package/terser-webpack-plugin
|
720 |
|
|
[node]: https://img.shields.io/node/v/terser-webpack-plugin.svg
|
721 |
|
|
[node-url]: https://nodejs.org
|
722 |
|
|
[deps]: https://david-dm.org/webpack-contrib/terser-webpack-plugin.svg
|
723 |
|
|
[deps-url]: https://david-dm.org/webpack-contrib/terser-webpack-plugin
|
724 |
|
|
[tests]: https://dev.azure.com/webpack-contrib/terser-webpack-plugin/_apis/build/status/webpack-contrib.terser-webpack-plugin?branchName=master
|
725 |
|
|
[tests-url]: https://dev.azure.com/webpack-contrib/terser-webpack-plugin/_build/latest?definitionId=7&branchName=master
|
726 |
|
|
[cover]: https://codecov.io/gh/webpack-contrib/terser-webpack-plugin/branch/master/graph/badge.svg
|
727 |
|
|
[cover-url]: https://codecov.io/gh/webpack-contrib/terser-webpack-plugin
|
728 |
|
|
[chat]: https://img.shields.io/badge/gitter-webpack%2Fwebpack-brightgreen.svg
|
729 |
|
|
[chat-url]: https://gitter.im/webpack/webpack
|
730 |
|
|
[size]: https://packagephobia.now.sh/badge?p=terser-webpack-plugin
|
731 |
|
|
[size-url]: https://packagephobia.now.sh/result?p=terser-webpack-plugin
|