尝试使用webpack 2.2.1进行生产构建时出现以下错误：
> 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
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.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]
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5.d78c86c5b48b1b431c01.chunk.js 632 kB 5 [emitted] [big]
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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]
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27.5d1ea5d6ebae15b96769.chunk.js 580 kB 27 [emitted] [big]
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29.c74d3346aca8532faf08.chunk.js 578 kB 29 [emitted] [big]
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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]
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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]
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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]
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70.f855bd5800a4d71c9e47.chunk.js 7.7 kB 70 [emitted]
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73.b039a0a0b71d6645c37a.chunk.js 8.45 kB 73 [emitted]
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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! docs-bootstrap-styled@0.5.0 build: `cross-env NODE_ENV=production webpack --config internals/webpack/webpack.prod.babel.js --color -p --progress`
npm ERR! Exit status 2
我真的不知道我的代码来自哪里。我刚刚在非tdd开发的月份之后完成了所有的单元测试。
有没有办法诊断这个？
答案 0 :(得分：14)
UglifyJs不支持ES6。该错误很可能是方法的简写语法。例如：
const obj = {
method() {
// ...
}
};
当它看到左括号时，它会改为冒号，如下所示：
const obj = {
method: function() {
// ...
}
};
有没有办法诊断这个？
它会告诉你块中的确切行，所以看看它。在您发布的错误消息中是：
[1.350b2d8a46d91e3c0911.chunk.js:20075,15]
^ ^ ^
filename line column
然后，您只需在项目中搜索您看到的标识符即可。如果您不想搜索整个项目，可以使用--display-chunks标志运行webpack。这将显示哪些模块包含在相应的块中，因此您只需要查看这些模块。
您可以告诉babel使用babel插件transform-es2015-shorthand-properties来转换速记语法，而不必替换所有简写语法。
记录：单元测试不会发现此类错误。
答案 1 :(得分：1)
意外的令牌punc«（»，预期的punc«：»
错误是说它期望冒号而不是左括号，所以问题可能是关于这样的函数的声明：
var foo = {
bar() {
console.log('Something');
}
}
，需要将其更改为
var foo = {
bar: function() {
console.log('Something');
}
}
答案 2 :(得分：1)
在es2015中将预设从env更改为.babelrc为我修复了它。 Babel将babel-preset-es2015更改为babel-preset-env。查看此链接 - http://babeljs.io/env
{
"presets": [
- "es2015",
+ "env",
"react"
],
}
答案 3 :(得分：0)
对于ES6 +，您可以使用 <script>
function CopyToClipboard(containerid) {
if (window.getSelection) {
if (window.getSelection().empty) { // Chrome
window.getSelection().empty();
} else if (window.getSelection().removeAllRanges) { // Firefox
window.getSelection().removeAllRanges();
}
} else if (document.selection) { // IE?
document.selection.empty();
}
if (document.selection) {
var range = document.body.createTextRange();
range.moveToElementText(document.getElementById(containerid));
range.select().createTextRange();
document.execCommand("copy");
} else if (window.getSelection) {
var range = document.createRange();
range.selectNode(document.getElementById(containerid));
window.getSelection().addRange(range);
document.execCommand("copy");
}
}</script>
<button id="button1" onclick="CopyToClipboard('div1')">Click to copy</button>
<div id="div1">Text To Copy </div>
而不是uglify-es，它正在开发中。