webpack
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Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
213 lines (197 loc) • 6.19 kB
JavaScript
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
;
const { compareNumbers } = require("./util/comparators");
const identifierUtils = require("./util/identifier");
/** @typedef {import("./Chunk")} Chunk */
/** @typedef {import("./Compiler")} Compiler */
/** @typedef {import("./Module")} Module */
/**
* @typedef {object} RecordsChunks
* @property {Record<string, number>=} byName
* @property {Record<string, number>=} bySource
* @property {number[]=} usedIds
*/
/**
* @typedef {object} RecordsModules
* @property {Record<string, number>=} byIdentifier
* @property {Record<string, number>=} bySource
* @property {number[]=} usedIds
*/
/**
* @typedef {object} Records
* @property {RecordsChunks=} chunks
* @property {RecordsModules=} modules
*/
/**
* @typedef {object} RecordIdsPluginOptions
* @property {boolean=} portableIds true, when ids need to be portable
*/
const PLUGIN_NAME = "RecordIdsPlugin";
class RecordIdsPlugin {
/**
* @param {RecordIdsPluginOptions=} options object
*/
constructor(options) {
this.options = options || {};
}
/**
* @param {Compiler} compiler the Compiler
* @returns {void}
*/
apply(compiler) {
const portableIds = this.options.portableIds;
const makePathsRelative =
identifierUtils.makePathsRelative.bindContextCache(
compiler.context,
compiler.root
);
/**
* @param {Module} module the module
* @returns {string} the (portable) identifier
*/
const getModuleIdentifier = module => {
if (portableIds) {
return makePathsRelative(module.identifier());
}
return module.identifier();
};
compiler.hooks.compilation.tap(PLUGIN_NAME, compilation => {
compilation.hooks.recordModules.tap(PLUGIN_NAME, (modules, records) => {
const chunkGraph = compilation.chunkGraph;
if (!records.modules) records.modules = {};
if (!records.modules.byIdentifier) records.modules.byIdentifier = {};
/** @type {Set<number>} */
const usedIds = new Set();
for (const module of modules) {
const moduleId = chunkGraph.getModuleId(module);
if (typeof moduleId !== "number") continue;
const identifier = getModuleIdentifier(module);
records.modules.byIdentifier[identifier] = moduleId;
usedIds.add(moduleId);
}
records.modules.usedIds = Array.from(usedIds).sort(compareNumbers);
});
compilation.hooks.reviveModules.tap(PLUGIN_NAME, (modules, records) => {
if (!records.modules) return;
if (records.modules.byIdentifier) {
const chunkGraph = compilation.chunkGraph;
/** @type {Set<number>} */
const usedIds = new Set();
for (const module of modules) {
const moduleId = chunkGraph.getModuleId(module);
if (moduleId !== null) continue;
const identifier = getModuleIdentifier(module);
const id = records.modules.byIdentifier[identifier];
if (id === undefined) continue;
if (usedIds.has(id)) continue;
usedIds.add(id);
chunkGraph.setModuleId(module, id);
}
}
if (Array.isArray(records.modules.usedIds)) {
compilation.usedModuleIds = new Set(records.modules.usedIds);
}
});
/**
* @param {Chunk} chunk the chunk
* @returns {string[]} sources of the chunk
*/
const getChunkSources = chunk => {
/** @type {string[]} */
const sources = [];
for (const chunkGroup of chunk.groupsIterable) {
const index = chunkGroup.chunks.indexOf(chunk);
if (chunkGroup.name) {
sources.push(`${index} ${chunkGroup.name}`);
} else {
for (const origin of chunkGroup.origins) {
if (origin.module) {
if (origin.request) {
sources.push(
`${index} ${getModuleIdentifier(origin.module)} ${
origin.request
}`
);
} else if (typeof origin.loc === "string") {
sources.push(
`${index} ${getModuleIdentifier(origin.module)} ${
origin.loc
}`
);
} else if (
origin.loc &&
typeof origin.loc === "object" &&
"start" in origin.loc
) {
sources.push(
`${index} ${getModuleIdentifier(
origin.module
)} ${JSON.stringify(origin.loc.start)}`
);
}
}
}
}
}
return sources;
};
compilation.hooks.recordChunks.tap(PLUGIN_NAME, (chunks, records) => {
if (!records.chunks) records.chunks = {};
if (!records.chunks.byName) records.chunks.byName = {};
if (!records.chunks.bySource) records.chunks.bySource = {};
/** @type {Set<number>} */
const usedIds = new Set();
for (const chunk of chunks) {
if (typeof chunk.id !== "number") continue;
const name = chunk.name;
if (name) records.chunks.byName[name] = chunk.id;
const sources = getChunkSources(chunk);
for (const source of sources) {
records.chunks.bySource[source] = chunk.id;
}
usedIds.add(chunk.id);
}
records.chunks.usedIds = Array.from(usedIds).sort(compareNumbers);
});
compilation.hooks.reviveChunks.tap(PLUGIN_NAME, (chunks, records) => {
if (!records.chunks) return;
/** @type {Set<number>} */
const usedIds = new Set();
if (records.chunks.byName) {
for (const chunk of chunks) {
if (chunk.id !== null) continue;
if (!chunk.name) continue;
const id = records.chunks.byName[chunk.name];
if (id === undefined) continue;
if (usedIds.has(id)) continue;
usedIds.add(id);
chunk.id = id;
chunk.ids = [id];
}
}
if (records.chunks.bySource) {
for (const chunk of chunks) {
if (chunk.id !== null) continue;
const sources = getChunkSources(chunk);
for (const source of sources) {
const id = records.chunks.bySource[source];
if (id === undefined) continue;
if (usedIds.has(id)) continue;
usedIds.add(id);
chunk.id = id;
chunk.ids = [id];
break;
}
}
}
if (Array.isArray(records.chunks.usedIds)) {
compilation.usedChunkIds = new Set(records.chunks.usedIds);
}
});
});
}
}
module.exports = RecordIdsPlugin;