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next.js/packages/next/build/webpack/plugins/chunk-names-plugin.js

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// This plugin mirrors webpack 3 `filename` and `chunkfilename` behavior
// This fixes https://github.com/webpack/webpack/issues/6598
// This plugin is based on https://github.com/researchgate/webpack/commit/2f28947fa0c63ccbb18f39c0098bd791a2c37090
export default class ChunkNamesPlugin {
apply (compiler) {
compiler.hooks.compilation.tap('NextJsChunkNamesPlugin', (compilation) => {
compilation.chunkTemplate.hooks.renderManifest.intercept({
register (tapInfo) {
if (tapInfo.name === 'JavascriptModulesPlugin') {
const originalMethod = tapInfo.fn
tapInfo.fn = (result, options) => {
let filenameTemplate
const chunk = options.chunk
const outputOptions = options.outputOptions
if (chunk.filenameTemplate) {
filenameTemplate = chunk.filenameTemplate
} else if (chunk.hasEntryModule()) {
filenameTemplate = outputOptions.filename
} else {
filenameTemplate = outputOptions.chunkFilename
}
options.chunk.filenameTemplate = filenameTemplate
return originalMethod(result, options)
}
}
return tapInfo
}
})
})
}
}