Unexpected token punc «(», expected punc when creating chunk from UglifyJS
I have the following error when trying to do a production build using webpack 2.2.1 :
> cross-env NODE_ENV=production webpack --config internals/webpack/webpack.prod.babel.js --color -p --progress
Hash: 7bb2cdb98aab2f36f7e1
Version: webpack 2.2.1
Time: 259158ms
Asset Size Chunks Chunk Names
39.1ac14d04bb54ae025fbd.chunk.js 575 kB 39 [emitted] [big]
.htaccess 1.53 kB [emitted]
manifest.json 624 bytes [emitted]
0.b0881f3ea995a2fc465f.chunk.js 600 kB 0 [emitted] [big]
1.350b2d8a46d91e3c0911.chunk.js 918 kB 1 [emitted] [big]
2.e52c43dc81bf586e8812.chunk.js 636 kB 2 [emitted] [big]
3.c7b3f0e5477649c6c9d3.chunk.js 646 kB 3 [emitted] [big]
4.8ce7dfe0860e39ae2456.chunk.js 631 kB 4 [emitted] [big]
5.d78c86c5b48b1b431c01.chunk.js 632 kB 5 [emitted] [big]
6.9f79d2c5fa73cb97cc74.chunk.js 630 kB 6 [emitted] [big]
7.3a675854451d716221c2.chunk.js 649 kB 7 [emitted] [big]
8.5f09ba293a356e88feab.chunk.js 627 kB 8 [emitted] [big]
9.edc7562575e48e9bce12.chunk.js 642 kB 9 [emitted] [big]
10.4a4bb6e69f6d7255d6ca.chunk.js 632 kB 10 [emitted] [big]
11.f5b5e0d36957300688bb.chunk.js 655 kB 11 [emitted] [big]
12.d2f74bd43695364d6e84.chunk.js 645 kB 12 [emitted] [big]
13.ab88bb5c89848d464643.chunk.js 628 kB 13 [emitted] [big]
14.cde57af54e53f5fa794f.chunk.js 626 kB 14 [emitted] [big]
15.df611a46991bdba9f78f.chunk.js 626 kB 15 [emitted] [big]
16.22d8ed2fc86438543bca.chunk.js 707 kB 16 [emitted] [big]
17.432aca8b104eb242add1.chunk.js 666 kB 17 [emitted] [big]
18.0c86d3404ce0d14653b2.chunk.js 650 kB 18 [emitted] [big]
19.d7636acc74397167013d.chunk.js 627 kB 19 [emitted] [big]
20.c3c519d8882f810910a6.chunk.js 632 kB 20 [emitted] [big]
21.fd6ec98dac51c188c629.chunk.js 708 kB 21 [emitted] [big]
22.200e5f939f77900a2f2f.chunk.js 643 kB 22 [emitted] [big]
23.393d2400f3a4357f1c2d.chunk.js 628 kB 23 [emitted] [big]
24.1c21a605f12ff9ff2fa7.chunk.js 634 kB 24 [emitted] [big]
25.5f5e33f51fe307545c6b.chunk.js 631 kB 25 [emitted] [big]
26.92502f109e3d6e616332.chunk.js 634 kB 26 [emitted] [big]
27.5d1ea5d6ebae15b96769.chunk.js 580 kB 27 [emitted] [big]
28.d571ed979e55c69096c2.chunk.js 579 kB 28 [emitted] [big]
29.c74d3346aca8532faf08.chunk.js 578 kB 29 [emitted] [big]
30.a35f7487c1c559c7f5d7.chunk.js 579 kB 30 [emitted] [big]
31.dc58b8286da5cbfefea3.chunk.js 567 kB 31 [emitted] [big]
32.6c32f4f35f9cda5c3938.chunk.js 587 kB 32 [emitted] [big]
33.ca86ec92b1a188a9c8e6.chunk.js 598 kB 33 [emitted] [big]
34.73c3e986500f888a12f5.chunk.js 571 kB 34 [emitted] [big]
35.59e71f89d6afcb9932bf.chunk.js 575 kB 35 [emitted] [big]
36.6285ac7b1164d4b53fc9.chunk.js 596 kB 36 [emitted] [big]
37.c301c304dd0bada883df.chunk.js 601 kB 37 [emitted] [big]
38.843bd7f01b202ca4d1bf.chunk.js 590 kB 38 [emitted] [big]
favicon.ico 67.3 kB [emitted]
40.db40e1c52ff3bad0bb78.chunk.js 586 kB 40 [emitted] [big]
41.cea7167bc8d0015ce8a3.chunk.js 576 kB 41 [emitted] [big]
42.4da525baabf2a11ff762.chunk.js 615 kB 42 [emitted] [big]
43.10dd5cb77bd71053c86a.chunk.js 569 kB 43 [emitted] [big]
44.dd2089c95eff121ed148.chunk.js 572 kB 44 [emitted] [big]
45.735f9eb7b75a9e0d5e3c.chunk.js 570 kB 45 [emitted] [big]
46.c691a6442ef58163ecb2.chunk.js 583 kB 46 [emitted] [big]
47.0bfb099e1d1bd4edff39.chunk.js 566 kB 47 [emitted] [big]
48.5ba43bcc43c12ecb8e4e.chunk.js 82.6 kB 48 [emitted]
49.5a8172a8a9ef896cb1f5.chunk.js 35.5 kB 49 [emitted]
50.0e982f73a5beb9ccad3a.chunk.js 36.3 kB 50 [emitted]
51.8ab7ac85d02819586dc1.chunk.js 46.3 kB 51 [emitted]
52.c8f155d9cef8f9f2937d.chunk.js 79.6 kB 52 [emitted]
53.36c2fad479bf35b0d1f1.chunk.js 37.4 kB 53 [emitted]
54.63e68a1593ab8ee4f2c6.chunk.js 36.3 kB 54 [emitted]
55.8f657b8fdc6163d0550b.chunk.js 42.4 kB 55 [emitted]
56.2a4cab26835a307d9468.chunk.js 35 kB 56 [emitted]
57.ec95d3459dd932a74352.chunk.js 38.9 kB 57 [emitted]
58.5e4c7da441e6c3244e25.chunk.js 18.2 kB 58 [emitted]
59.50524fa7662caade7171.chunk.js 41.2 kB 59 [emitted]
60.04694585a84e27f4b4a2.chunk.js 4.02 kB 60 [emitted]
61.f532c12ec94650a77c36.chunk.js 4.11 kB 61 [emitted]
62.0f7e16b18f11e6104300.chunk.js 4.91 kB 62 [emitted]
63.04cd26a9cc98f6d2e251.chunk.js 4.86 kB 63 [emitted]
64.28e531e8f67544ae8bb4.chunk.js 3.69 kB 64 [emitted]
65.c6d529e00cc2f02d298d.chunk.js 4.11 kB 65 [emitted]
66.9cd0049cdf2fae8311ac.chunk.js 6.84 kB 66 [emitted]
67.8d860ceb8cfd8afec941.chunk.js 10.1 kB 67 [emitted]
68.d511e394e401edc4742a.chunk.js 5.86 kB 68 [emitted]
69.552c985835c018f52e83.chunk.js 12.4 kB 69 [emitted]
70.f855bd5800a4d71c9e47.chunk.js 7.7 kB 70 [emitted]
71.692364c8d68e9689e36c.chunk.js 24.1 kB 71 [emitted]
72.38336d6626d6def72d84.chunk.js 24.4 kB 72 [emitted]
73.b039a0a0b71d6645c37a.chunk.js 8.45 kB 73 [emitted]
74.38e2ce6ee4774d0ce704.chunk.js 3.65 kB 74 [emitted]
75.fd7b46e332d33698b270.chunk.js 6.4 kB 75 [emitted]
76.6d6cf7ed17606711ae18.chunk.js 4.96 kB 76 [emitted]
77.ebdbafe3da683a49d201.chunk.js 8.08 kB 77 [emitted]
main.89765ef68e927cffc5d6.js 1.41 MB 78 [emitted] [big] main
index.html 643 bytes [emitted]
sw.js 24.3 kB [emitted]
[./app/app.js] ./app/app.js 11.9 kB {78} [built]
[./app/containers/App/index.js] ./app/containers/App/index.js 7.38 kB {78} [built]
[./app/containers/App/selectors.js] ./app/containers/App/selectors.js 1.87 kB {78} [built]
[./app/containers/LanguageProvider/index.js] ./app/containers/LanguageProvider/index.js 7.01 kB {78} [built]
[./app/global-styles.js] ./app/global-styles.js 786 bytes {78} [built]
[./app/i18n.js] ./app/i18n.js 2.98 kB {78} [built]
[./app/routes.js] ./app/routes.js 26.9 kB {78} [built]
[./app/store.js] ./app/store.js 3.01 kB {78} [built]
[./node_modules/babel-polyfill/lib/index.js] ./~/babel-polyfill/lib/index.js 833 bytes {78} [built]
[./node_modules/intl/locale-data/jsonp/en.js] ./~/intl/locale-data/jsonp/en.js 24 kB {71} [built]
[1] multi ./app/app.js 28 bytes {78} [built]
[./node_modules/react-dom/index.js] ./~/react-dom/index.js 59 bytes {78} [built]
[./node_modules/react-redux/lib/index.js] ./~/react-redux/lib/index.js 475 bytes {78} [built]
[./node_modules/react-router-redux/lib/index.js] ./~/react-router-redux/lib/index.js 1.97 kB {78} [built]
[./node_modules/sanitize.css/sanitize.css] ./~/sanitize.css/sanitize.css 856 bytes {78} [built]
+ 1207 hidden modules
ERROR in 1.350b2d8a46d91e3c0911.chunk.js from UglifyJs
Unexpected token punc «(», expected punc «:» [1.350b2d8a46d91e3c0911.chunk.js:20075,15]
Child html-webpack-plugin for "index.html":
[./node_modules/html-webpack-plugin/lib/loader.js!./app/index.html] ./~/html-webpack-plugin/lib/loader.js!./app/index.html 588 bytes {0} [built]
Child __offline_serviceworker:
[./node_modules/exports-loader/index.js?self.fetch!./node_modules/whatwg-fetch/fetch.js] ./~/exports-loader?self.fetch!./~/whatwg-fetch/fetch.js 12.6 kB {0} [built]
[./node_modules/offline-plugin/empty-entry.js] ./~/offline-plugin/empty-entry.js 0 bytes {0} [built]
[./node_modules/offline-plugin/lib/misc/sw-loader.js?json=%7B%22data_var_name%22%3A%22__wpo%22%2C%22loaders%22%3A%5B%5D%2C%22cacheMaps%22%3A%5B%5D%7D!./node_modules/offline-plugin/empty-entry.js] ./~/offline-plugin/lib/misc/sw-loader.js?json=%7B%22data_var_name%22%3A%22__wpo%22%2C%22loaders%22%3A%5B%5D%2C%22cacheMaps%22%3A%5B%5D%7D!./~/offline-plugin/empty-entry.js 16.2 kB {0} [built]
npm ERR! Linux 3.16.0-4-amd64
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "build"
npm ERR! node v7.2.0
npm ERR! npm v3.10.9
npm ERR! code ELIFECYCLE
npm ERR! [email protected] build: `cross-env NODE_ENV=production webpack --config internals/webpack/webpack.prod.babel.js --color -p --progress`
npm ERR! Exit status 2
I really don't know from where in my code it come from. I have just repared all the unit tests after month of non tdd development.
Is there a way to diagnosis this ?
Answer
UglifyJs does not support ES6. The error is very likely the method shorthand syntax. For example:
const obj = {
method() {
// ...
}
};
When it sees the opening parenthesis, it expected a colon instead, like this:
const obj = {
method: function() {
// ...
}
};
Is there a way to diagnosis this ?
It tells you the exact line in your chunk, so take a look at it. In the error message you posted it is:
[1.350b2d8a46d91e3c0911.chunk.js:20075,15]
^ ^ ^
filename line column
Then you can simply search your project for an identifier you see. If you don't want to search the entire project you can run webpack with the --display-chunks flag. This will show which modules are included in the respective chunks, so you only need to look into those.
Instead of having to replace all the shorthand syntax, you can tell babel to transpile the shorthand syntax with the babel plugin transform-es2015-shorthand-properties.
For the record: Unit tests won't find such errors.