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squid-js/plugins/add-vendors-plugin.js

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2018-11-26 15:55:09 +01:00
const { ConcatSource } = require('webpack-sources')
module.exports = class AddVendorsPlugin {
constructor(base) {
this.base = base
}
apply(compiler) {
compiler.hooks.emit.tapAsync(
`AddVendorsPlugin ${this.base}`,
(compilation, callback) => {
const main = compilation.assets[`main.${this.base}`]
const mainMap = compilation.assets[`main.${this.base}.map`]
const vendor = compilation.assets[`vendors.${this.base}`]
if (main && vendor) {
const compiledAsset = new ConcatSource(main.children[0])
compiledAsset.add(vendor)
compiledAsset.add(main.children[1])
compilation.assets = {}
compilation.assets[this.base] = compiledAsset
} else if (main && mainMap) {
compilation.assets = {}
compilation.assets[this.base] = main
compilation.assets[`${this.base}.map`] = mainMap
}
callback()
}
)
}
}