我有这个Webpack配置:
const path = require('path');
module.exports = {
entry: ['babel-polyfill', './lib/index.js'],
output: {
path: path.resolve(__dirname + '/dist'),
filename: 'suman.js'
},
module: {
loaders: [
{
test: /\.js$/,
loader: 'babel-loader',
options: {
presets: ['latest'],
plugins: ['transform-runtime']
}
}
]
},
node: {
assert: 'empty',
buffer: 'mock',
child_process: 'empty',
cluster: 'empty',
console: 'mock',
constants: 'empty',
crypto: 'empty',
dgram: 'empty',
dns: 'mock',
domain: 'empty',
events: 'empty',
fs: 'empty',
http: 'empty',
https: 'empty',
module: 'empty',
net: 'mock',
os: 'empty',
path: 'empty',
process: 'mock',
punycode: 'mock',
querystring: 'empty',
readline: 'empty',
repl: 'empty',
stream: 'empty',
string_decoder: 'empty',
timers: 'empty',
tls: 'mock',
tty: 'mock',
url: 'empty',
util: 'empty',
v8: 'mock',
vm: 'empty',
zlib: 'empty',
}
};
我在命令行运行$ webpack并得到一个输出文件,我在浏览器中加载文件如下:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Suman tests</title>
<script src="../../../dist/suman.js"></script>
</head>
<body>
</body>
</html>
如果我在浏览器中加载这个html文件,我会得到:
suman.js:48039 Uncaught TypeError: $export is not a function
at Object.<anonymous> (suman.js:48039)
at __webpack_require__ (suman.js:20)
at Object.<anonymous> (suman.js:46862)
at __webpack_require__ (suman.js:20)
at Object.hasOwnProperty (suman.js:12300)
at __webpack_require__ (suman.js:20)
at Object.<anonymous> (suman.js:10477)
at __webpack_require__ (suman.js:20)
at Object.<anonymous> (suman.js:12321)
at __webpack_require__ (suman.js:20)
我查看了Github上的一系列问题,似乎没有一个问题可以解决。谁知道什么可能是错的?
我在Webpack 2.3.3版上。
在旁注 - 我在哪里可以找到Node.js / NPM模块的一些polyfill?
$export
似乎是由Webpack生成的函数,以下是我输出文件中出现的一些函数:
var global = __webpack_require__(10),
core = __webpack_require__(58),
hide = __webpack_require__(33),
redefine = __webpack_require__(34),
ctx = __webpack_require__(59),
PROTOTYPE = 'prototype';
var $export = function $export(type, name, source) {
var IS_FORCED = type & $export.F,
IS_GLOBAL = type & $export.G,
IS_STATIC = type & $export.S,
IS_PROTO = type & $export.P,
IS_BIND = type & $export.B,
target = IS_GLOBAL ? global : IS_STATIC ? global[name] || (global[name] = {}) : (global[name] || {})[PROTOTYPE],
exports = IS_GLOBAL ? core : core[name] || (core[name] = {}),
expProto = exports[PROTOTYPE] || (exports[PROTOTYPE] = {}),
key,
own,
out,
exp;
if (IS_GLOBAL) source = name;
for (key in source) {
答案 0 :(得分:9)
与
一起test: /\.js$/
你应该
exclude: /node_modules/
您可以在使用示例中看到:https://github.com/babel/babel-loader#usage
e.g。
{
test: /\.js$/,
exclude: /node_modules/,
loader: 'babel-loader',
options: {
presets: ['latest'],
plugins: ['transform-runtime']
}
}
在这种情况下,您使用的是transform-runtime
,这意味着Babel会将babel-runtime
的引用插入到您的代码中。问题在于,如果没有exclude: /node_modules/,
,或者至少exclude: /node_modules\/(?!babel-runtime)/,
,您也会告诉babel-runtime
在内部插入本身的引用,这会产生循环依赖关系,打破代码。