86 lines
2.5 KiB
JavaScript
86 lines
2.5 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const { STAGE_BASIC } = require("../OptimizationStages");
|
|
|
|
/** @typedef {import("../Chunk")} Chunk */
|
|
/** @typedef {import("../ChunkGroup")} ChunkGroup */
|
|
/** @typedef {import("../Compiler")} Compiler */
|
|
|
|
class EnsureChunkConditionsPlugin {
|
|
/**
|
|
* @param {Compiler} compiler the compiler instance
|
|
* @returns {void}
|
|
*/
|
|
apply(compiler) {
|
|
compiler.hooks.compilation.tap(
|
|
"EnsureChunkConditionsPlugin",
|
|
compilation => {
|
|
const handler = chunks => {
|
|
const chunkGraph = compilation.chunkGraph;
|
|
let changed = false;
|
|
// These sets are hoisted here to save memory
|
|
// They are cleared at the end of every loop
|
|
/** @type {Set<Chunk>} */
|
|
const sourceChunks = new Set();
|
|
/** @type {Set<ChunkGroup>} */
|
|
const chunkGroups = new Set();
|
|
for (const module of compilation.modules) {
|
|
for (const chunk of chunkGraph.getModuleChunksIterable(module)) {
|
|
if (!module.chunkCondition(chunk, compilation)) {
|
|
sourceChunks.add(chunk);
|
|
for (const group of chunk.groupsIterable) {
|
|
chunkGroups.add(group);
|
|
}
|
|
}
|
|
}
|
|
if (sourceChunks.size === 0) continue;
|
|
/** @type {Set<Chunk>} */
|
|
const targetChunks = new Set();
|
|
chunkGroupLoop: for (const chunkGroup of chunkGroups) {
|
|
// Can module be placed in a chunk of this group?
|
|
for (const chunk of chunkGroup.chunks) {
|
|
if (module.chunkCondition(chunk, compilation)) {
|
|
targetChunks.add(chunk);
|
|
continue chunkGroupLoop;
|
|
}
|
|
}
|
|
// We reached the entrypoint: fail
|
|
if (chunkGroup.isInitial()) {
|
|
throw new Error(
|
|
"Cannot fullfil chunk condition of " + module.identifier()
|
|
);
|
|
}
|
|
// Try placing in all parents
|
|
for (const group of chunkGroup.parentsIterable) {
|
|
chunkGroups.add(group);
|
|
}
|
|
}
|
|
for (const sourceChunk of sourceChunks) {
|
|
chunkGraph.disconnectChunkAndModule(sourceChunk, module);
|
|
}
|
|
for (const targetChunk of targetChunks) {
|
|
chunkGraph.connectChunkAndModule(targetChunk, module);
|
|
}
|
|
sourceChunks.clear();
|
|
chunkGroups.clear();
|
|
}
|
|
if (changed) return true;
|
|
};
|
|
compilation.hooks.optimizeChunks.tap(
|
|
/** @type {TODO} */ ({
|
|
name: "EnsureChunkConditionsPlugin",
|
|
stage: STAGE_BASIC
|
|
}),
|
|
handler
|
|
);
|
|
}
|
|
);
|
|
}
|
|
}
|
|
module.exports = EnsureChunkConditionsPlugin;
|