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webpack.config.cjs
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webpack.config.cjs
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const { Compilation, sources } = require('webpack');
const TerserPlugin = require('terser-webpack-plugin');
const { resolve } = require('path');
module.exports = env => {
const dev = !!env?.dev && (/^[ty]/i.test(env?.dev) || Number(env?.dev) !== 0);
const libraryTarget = 'umd';
// noinspection JSUnresolvedVariable,JSUnresolvedFunction,JSUnresolvedFunction
return {
mode: dev ? 'development' : 'production',
target: ['es6', 'web'],
entry: './dist/index.js',
output: {
path: resolve(__dirname, 'dist', 'umd'),
filename: 'index.js',
libraryTarget,
library: 'tbTime'
},
module: {
rules: [
{
test: /\.js$/,
exclude: /\.spec\.js$/,
use: {
loader: 'babel-loader',
options: {
presets: [['@babel/preset-env', {
targets: { // ES6 minimums
chrome: '58',
edge: '14',
firefox: '54',
opera: '55',
safari: '10'
}
}]]
}
},
resolve: { fullySpecified: false }
}
]
},
resolve: {
mainFields: ['fesm2015', 'module', 'main']
},
externals: { 'by-request': 'by-request' },
optimization: {
minimize: !dev,
minimizer: [new TerserPlugin({
terserOptions: {
output: {
comments: (node, comment) => {
return comment.type === 'comment2' && /\bwebpackIgnore\b/.test(comment.value);
},
max_line_len: 511
}
}
})],
},
devtool: 'source-map',
plugins: [
new class OutputMonitor {
// noinspection JSUnusedGlobalSymbols
apply(compiler) {
compiler.hooks.thisCompilation.tap('OutputMonitor', (compilation) => {
compilation.hooks.processAssets.tap(
{ name: 'OutputMonitor', stage: Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE },
() => {
const file = compilation.getAsset('index.js');
const { devtool } = compiler.options;
let contents = file.source.source();
const { map } = file.source.sourceAndMap();
// Strip out dynamic import() so it doesn't generate warnings.
contents = contents.replace(/return import\(.*?\/\* webpackIgnore: true \*\/.*?tseuqer-yb.*?\.join\(''\)\)/s, 'return null');
// Strip out large and large-alt timezone definitions from this build.
contents = contents.replace(/\/\* trim-file-start \*\/.*?\/\* trim-file-end \*\//sg, 'null');
compilation.updateAsset('index.js', devtool
? new sources.SourceMapSource(contents, 'index.js', map)
: new sources.RawSource(contents)
);
}
);
});
}
}()
]
};
};