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fix: memory leaks from worker recompilation with HMR

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Add alreadyCompiled flag to prevent unnecessary worker rebuilds
during development with Hot Module Replacement, which was causing
memory leaks in both webpack and rspack.
This commit is contained in:
Daniil Gaponov 2025-07-10 21:19:07 +02:00
parent f420968fc9
commit 1fcf768d0a
1 changed files with 14 additions and 1 deletions
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15
webpack-plugin/src/plugins/AddWorkerEntryPointPlugin.ts
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@ -13,11 +13,17 @@ function getCompilerHook(
{ id, entry, filename, chunkFilename, plugins }: IAddWorkerEntryPointPluginOptions
) {
const webpack = compiler.webpack ?? require('webpack');
let alreadyCompiled = false;
return function (
compilation: webpack.Compilation,
callback: (error?: Error | null | false) => void
) {
if (alreadyCompiled) {
callback();
return;
}
const outputOptions = {
filename,
chunkFilename,
@ -33,7 +39,14 @@ function getCompilerHook(
new SingleEntryPlugin(compiler.context, entry, 'main').apply(childCompiler);
plugins.forEach((plugin) => plugin.apply(childCompiler));
childCompiler.runAsChild((err?: Error | null) => callback(err));
childCompiler.runAsChild((err?: Error | null) => {
if (err) {
callback(err);
} else {
alreadyCompiled = true;
callback();
}
});
};
}