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91 lines
2.2 KiB
91 lines
2.2 KiB
4 years ago
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const path = require("path");
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const asyncLib = require("neo-async");
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const SingleEntryDependency = require("./dependencies/SingleEntryDependency");
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class LibManifestPlugin {
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constructor(options) {
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this.options = options;
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}
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apply(compiler) {
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compiler.hooks.emit.tapAsync(
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"LibManifestPlugin",
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(compilation, callback) => {
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asyncLib.forEach(
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compilation.chunks,
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(chunk, callback) => {
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if (!chunk.isOnlyInitial()) {
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callback();
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return;
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}
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const targetPath = compilation.getPath(this.options.path, {
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hash: compilation.hash,
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chunk
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});
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const name =
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this.options.name &&
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compilation.getPath(this.options.name, {
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hash: compilation.hash,
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chunk
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});
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const manifest = {
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name,
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type: this.options.type,
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content: Array.from(chunk.modulesIterable, module => {
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if (
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this.options.entryOnly &&
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!module.reasons.some(
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r => r.dependency instanceof SingleEntryDependency
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)
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) {
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return;
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}
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if (module.libIdent) {
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const ident = module.libIdent({
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context: this.options.context || compiler.options.context
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});
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if (ident) {
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return {
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ident,
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data: {
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id: module.id,
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buildMeta: module.buildMeta
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}
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};
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}
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}
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})
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.filter(Boolean)
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.reduce((obj, item) => {
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obj[item.ident] = item.data;
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return obj;
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}, Object.create(null))
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};
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// Apply formatting to content if format flag is true;
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const manifestContent = this.options.format
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? JSON.stringify(manifest, null, 2)
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: JSON.stringify(manifest);
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const content = Buffer.from(manifestContent, "utf8");
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compiler.outputFileSystem.mkdirp(path.dirname(targetPath), err => {
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if (err) return callback(err);
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compiler.outputFileSystem.writeFile(
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targetPath,
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content,
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callback
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);
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});
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},
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callback
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);
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}
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);
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}
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}
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module.exports = LibManifestPlugin;
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