Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Adapt to Webpack 5 #114

Merged
merged 1 commit into from
May 23, 2022
Merged

Adapt to Webpack 5 #114

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
64 changes: 52 additions & 12 deletions src/index.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ loader.pitch = function(request) {

const cb = this.async();

const filename = loaderUtils.interpolateName(this, `${options.name || '[hash]'}.worker.js`, {
const filename = loaderUtils.interpolateName(this, `${options.name || '[fullhash]'}.worker.js`, {
context: options.context || this.rootContext || this.options.context,
regExp: options.regExp
});
Expand Down Expand Up @@ -89,22 +89,37 @@ loader.pitch = function(request) {

compilationHook(worker.compiler, (compilation, data) => {
if (compilation.cache) {
if (!compilation.cache[subCache]) compilation.cache[subCache] = {};

compilation.cache = compilation.cache[subCache];
let cache;
if (compilation.cache instanceof Map) {
cache = compilation.cache.get(subCache);
if (!cache) {
cache = new Map();
compilation.cache.set(subCache, cache);
}
}
else if (!compilation.cache[subCache]) {
cache = compilation.cache[subCache] = {};
}

compilation.cache = cache;
}
parseHook(data, (parser, options) => {
exportDeclarationHook(parser, expr => {
let decl = expr.declaration || expr,
{ compilation, current } = parser.state,
entry = compilation.entries[0].resource;
let decl = expr.declaration || expr;
let { compilation, current } = parser.state;

let entryModule =
compilation.entries instanceof Map
? compilation.moduleGraph.getModule(
compilation.entries.get('main').dependencies[0]
)
: compilation.entries[0];

// only process entry exports
if (current.resource!==entry) return;
if (current.resource!==entryModule.resource) return;

let key = current.nameForCondition();
let exports = CACHE[key] || (CACHE[key] = {});

if (decl.id) {
exports[decl.id.name] = true;
}
Expand All @@ -116,6 +131,20 @@ loader.pitch = function(request) {
else {
console.warn('[workerize] unknown export declaration: ', expr);
}

// This is for Webpack 5: mark the exports as used so it does not get tree-shaken away on production build
if (compilation.moduleGraph) {
const { getEntryRuntime } = require('webpack/lib/util/runtime');
const { UsageState } = require('webpack');
const runtime = getEntryRuntime(compilation, 'main');
for (const exportName of Object.keys(exports)) {
const exportInfo = compilation.moduleGraph.getExportInfo(entryModule, exportName);
exportInfo.setUsed(UsageState.Used, runtime);
exportInfo.canMangleUse = false;
exportInfo.canMangleProvide = false;
}
compilation.moduleGraph.addExtraReason(entryModule, 'used by workerize-loader');
}
});
});
});
Expand All @@ -124,9 +153,20 @@ loader.pitch = function(request) {
if (err) return cb(err);

if (entries[0]) {
worker.file = entries[0].files[0];

let key = entries[0].entryModule.nameForCondition();
worker.file = Array.from(entries[0].files)[0];
const entryModules =
compilation.chunkGraph &&
compilation.chunkGraph.getChunkEntryModulesIterable
? Array.from(
compilation.chunkGraph.getChunkEntryModulesIterable(entries[0])
)
: null;
const entryModule =
entryModules && entryModules.length > 0
? entryModules[0]
: entries[0].entryModule;

let key = entryModule.nameForCondition();
let contents = compilation.assets[worker.file].source();
let exports = Object.keys(CACHE[key] || {});

Expand Down