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Fix issue with thread-loader + babel-loader performance #868
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| const { applyVariantToBabelConfig } = require('@embroider/core'); | ||
| module.exports = require('babel-loader').custom(babel => { | ||
| return { | ||
| customOptions({ variant, appBabelConfigPath, ...extraOptions }) { | ||
| const custom = { | ||
| variant, | ||
| appBabelConfigPath, | ||
| }; | ||
|
|
||
| const appBabelConfig = applyVariantToBabelConfig(variant, require(appBabelConfigPath)); | ||
|
|
||
| const loader = { | ||
| ...appBabelConfig, | ||
| ...extraOptions, | ||
| }; | ||
|
|
||
| if (loader.plugins) { | ||
| loader.plugins = loader.plugins.slice(); | ||
| } else { | ||
| loader.plugins = []; | ||
| } | ||
|
|
||
| // webpack uses acorn and acorn doesn't parse these features yet, so we | ||
| // always tranpile them away regardless of what preset-env is doing | ||
| if (!loader.plugins.some(pluginMatches(/@babel\/plugin-proposal-optional-chaining/))) { | ||
| loader.plugins.push(require.resolve('@babel/plugin-proposal-optional-chaining')); | ||
| } | ||
| if (!loader.plugins.some(pluginMatches(/@babel\/plugin-proposal-nullish-coalescing-operator/))) { | ||
| loader.plugins.push(require.resolve('@babel/plugin-proposal-nullish-coalescing-operator')); | ||
| } | ||
|
|
||
| return { | ||
| custom, | ||
| loader, | ||
| }; | ||
| }, | ||
| }; | ||
| }); | ||
|
|
||
| function pluginMatches(pattern) { | ||
| return function (plugin) { | ||
| return plugin && pattern.test(Array.isArray(plugin) ? plugin[0] : plugin); | ||
| }; | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| { | ||
| "name": "@embroider/babel-loader-8", | ||
| "version": "0.42.1", | ||
| "repository": { | ||
| "type": "git", | ||
| "url": "https://github.com/embroider-build/embroider.git", | ||
| "directory": "packages/babel-loader-8" | ||
| }, | ||
| "license": "MIT", | ||
| "main": "index.js", | ||
| "dependencies": { | ||
| "@babel/core": "^7.14.5", | ||
| "@babel/plugin-proposal-nullish-coalescing-operator": "^7.14.5", | ||
| "@babel/plugin-proposal-optional-chaining": "^7.14.5", | ||
| "@embroider/core": "0.42.1", | ||
| "babel-loader": "8" | ||
| }, | ||
| "engines": { | ||
| "node": "12.* || 14.* || >= 16" | ||
| }, | ||
| "volta": { | ||
| "extends": "../../package.json" | ||
| } | ||
| } |
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A short description of the "fix" would be great. As it may not be obvious for future travelers.
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I added more to commit description