Don*_*n P 6 webpack webpack-html-loader
我想使用HTMLWebpackPlugin获取我的index.ejs模板文件,插入我的捆绑资产,并输出最终index.ejs文件.
这个例子有一个EJS变量<%= API_URL %>,但是webpack正在解释它.
如何阻止webpack替换变量?
启动"模板":
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Monitor</title>
<script>
window.config = {
API_URL: "<%= API_URL %>"
}
</script>
</head>
<body>
<div class="container"></div>
</body>
</html>
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当您尝试运行webpack时:
ERROR in Template execution failed: ReferenceError: API_URL is not defined
期望的结果index.ejs :(有捆绑资产和EJS var)
监视器window.config = {API_URL:"<%= API_URL%>"}
webpack.config.js
var webpack = require('webpack');
var path = require('path');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
module.exports = {
entry: {
bundle: './src/index.js'
},
output: {
path: path.join(__dirname, 'dist'),
filename: '[name].[chunkhash].js'
},
module: {
rules: [
{
test: /\.js$/,
use: 'babel-loader',
exclude: /node_modules/
},
{
// CSS is imported in app.js.
test: /\.scss$/,
use: ExtractTextPlugin.extract({
fallbackLoader: 'style-loader',
loader: ["css-loader", "sass-loader"]
})
}]
},
plugins: [
new webpack.DefinePlugin({
'process.env': {
'NODE_ENV': JSON.stringify(process.env.NODE_ENV),
'API_URL': JSON.stringify(process.env.API_URL)
}
}),
new HtmlWebpackPlugin({
template: 'src/index.ejs',
inject: true
}),
new ExtractTextPlugin("styles.css")
],
};
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这是一个非常糟糕的解决方案,我希望其他人对如何做到这一点有真正的答案/理解。
在模板文件 (index.ejs) 中,执行以下操作:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Monitor</title>
<script>
window.config = {
API_URL: "<%= htmlWebpackPlugin.options.API_URL_TEMPLATE_VAR %>"
}
</script>
</head>
<body>
<div class="container"></div>
</body>
</html>
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在您的 webpack 配置中,执行此操作(相关部分是新的 HtmlWebpackPlugin,我在其中定义了一个变量:
plugins: [
// Define environment variables that are accessible inside of app javascript.
new webpack.DefinePlugin({
'process.env': {
'NODE_ENV': JSON.stringify(process.env.NODE_ENV)
}
}),
// Adds bundled file links to the index.html
new HtmlWebpackPlugin({
// The input file name
template: 'src/index.prod.ejs',
// Injects scripts into the <body>
inject: true,
// This is so hacky. I inject a string so the built .ejs file has this template var. Lets us set api_url when server is started instead of at bundle time.
API_URL_TEMPLATE_VAR: '<%= process.env.API_URL %>',
// The output file name
filename: 'index.ejs'
}),
new ExtractTextPlugin("styles.css")
],
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因为我定义了API_URL_TEMPLATE_VAR,当 html-webpack-plugin 评估它时,它将打印<%= process.env.API_URL %>到最终模板中。
哈克,但有效。不接受我自己的答案/等待更好的答案。
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