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Improve webpack performance (~ 80ms -> 15ms)

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Vendicated 2022-09-28 22:49:46 +02:00
parent 0677df7818
commit 86c4bb7f8c
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GPG key ID: EC781ADFB93EFFA3
2 changed files with 29 additions and 4 deletions
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25
src/utils/patchWebpack.ts
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@ -53,6 +53,18 @@ function patchPush() {
return originalMod(module, exports, require);
}
// There are (at the time of writing) 11 modules exporting the window
// Make these non enumerable to improve webpack search performance
if (module.exports === window) {
Object.defineProperty(require.c, id, {
value: require.c[id],
enumerable: false,
configurable: true,
writable: true
});
return;
}
for (const callback of listeners) {
try {
callback(exports);
@ -65,10 +77,17 @@ function patchPush() {
if (filter(exports)) {
subscriptions.delete(filter);
callback(exports);
} else for (const nested in exports) {
if (exports[nested] && filter(exports[nested])) {
} else if (typeof exports === "object") {
if (exports.default && filter(exports.default)) {
subscriptions.delete(filter);
callback(exports[nested]);
callback(exports.default);
}
for (const nested in exports) if (nested.length < 3) {
if (exports[nested] && filter(exports[nested])) {
subscriptions.delete(filter);
callback(exports[nested]);
}
}
}
} catch (err) {

8
src/webpack/webpack.ts
View file

@ -44,9 +44,15 @@ export function find(filter: FilterFn, getDefault = true) {
if (filter(mod.exports))
return mod.exports;
if (typeof mod.exports !== "object") continue;
if (mod.exports.default && filter(mod.exports.default))
return getDefault ? mod.exports.default : mod.exports;
for (const nestedMod in mod.exports) {
// is 3 is the longest obfuscated export?
// the length check makes search about 20% faster
for (const nestedMod in mod.exports) if (nestedMod.length < 3) {
const nested = mod.exports[nestedMod];
if (nested && filter(nested)) return nested;
}