perf: lazy load preset-env plugins (#13076)

babel · Mar 30, 2021 · 3e174e9 · 3e174e9
1 parent a647b9e
commit 3e174e9
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Showing 3 changed files with 75 additions and 66 deletions.
diff --git a/babel.config.js b/babel.config.js
@@ -179,7 +179,11 @@ module.exports = function (api) {
         assumptions: parserAssumptions,
       },
       convertESM && {
-        test: ["./packages/babel-cli", "./packages/babel-core"].map(normalize),
+        test: [
+          "./packages/babel-cli",
+          "./packages/babel-core",
+          "./packages/babel-preset-env/src/available-plugins.js",
+        ].map(normalize),
         plugins: [
           // Explicitly use the lazy version of CommonJS modules.
           ["@babel/transform-modules-commonjs", { lazy: true }],

diff --git a/packages/babel-preset-env/src/available-plugins.js b/packages/babel-preset-env/src/available-plugins.js
@@ -68,68 +68,73 @@ import bugfixSafariForShadowing from "@babel/preset-modules/lib/plugins/transfor
 import bugfixV8SpreadParametersInOptionalChaining from "@babel/plugin-bugfix-v8-spread-parameters-in-optional-chaining";
 
 export default {
-  "bugfix/transform-async-arrows-in-class": bugfixAsyncArrowsInClass,
-  "bugfix/transform-edge-default-parameters": bugfixEdgeDefaultParameters,
-  "bugfix/transform-edge-function-name": bugfixEdgeFunctionName,
-  "bugfix/transform-safari-block-shadowing": bugfixSafariBlockShadowing,
-  "bugfix/transform-safari-for-shadowing": bugfixSafariForShadowing,
-  "bugfix/transform-tagged-template-caching": bugfixTaggedTemplateCaching,
-  "bugfix/transform-v8-spread-parameters-in-optional-chaining": bugfixV8SpreadParametersInOptionalChaining,
-  "proposal-async-generator-functions": proposalAsyncGeneratorFunctions,
-  "proposal-class-properties": proposalClassProperties,
-  "proposal-dynamic-import": proposalDynamicImport,
-  "proposal-export-namespace-from": proposalExportNamespaceFrom,
-  "proposal-json-strings": proposalJsonStrings,
-  "proposal-logical-assignment-operators": proposalLogicalAssignmentOperators,
-  "proposal-nullish-coalescing-operator": proposalNullishCoalescingOperator,
-  "proposal-numeric-separator": proposalNumericSeparator,
-  "proposal-object-rest-spread": proposalObjectRestSpread,
-  "proposal-optional-catch-binding": proposalOptionalCatchBinding,
-  "proposal-optional-chaining": proposalOptionalChaining,
-  "proposal-private-methods": proposalPrivateMethods,
-  "proposal-unicode-property-regex": proposalUnicodePropertyRegex,
-  "syntax-async-generators": syntaxAsyncGenerators,
-  "syntax-class-properties": syntaxClassProperties,
-  "syntax-dynamic-import": syntaxDynamicImport,
-  "syntax-export-namespace-from": syntaxExportNamespaceFrom,
-  "syntax-json-strings": syntaxJsonStrings,
-  "syntax-logical-assignment-operators": syntaxLogicalAssignmentOperators,
-  "syntax-nullish-coalescing-operator": syntaxNullishCoalescingOperator,
-  "syntax-numeric-separator": syntaxNumericSeparator,
-  "syntax-object-rest-spread": syntaxObjectRestSpread,
-  "syntax-optional-catch-binding": syntaxOptionalCatchBinding,
-  "syntax-optional-chaining": syntaxOptionalChaining,
-  "syntax-top-level-await": syntaxTopLevelAwait,
-  "transform-arrow-functions": transformArrowFunctions,
-  "transform-async-to-generator": transformAsyncToGenerator,
-  "transform-block-scoped-functions": transformBlockScopedFunctions,
-  "transform-block-scoping": transformBlockScoping,
-  "transform-classes": transformClasses,
-  "transform-computed-properties": transformComputedProperties,
-  "transform-destructuring": transformDestructuring,
-  "transform-dotall-regex": transformDotallRegex,
-  "transform-duplicate-keys": transformDuplicateKeys,
-  "transform-exponentiation-operator": transformExponentialOperator,
-  "transform-for-of": transformForOf,
-  "transform-function-name": transformFunctionName,
-  "transform-literals": transformLiterals,
-  "transform-member-expression-literals": transformMemberExpressionLiterals,
-  "transform-modules-amd": transformModulesAmd,
-  "transform-modules-commonjs": transformModulesCommonjs,
-  "transform-modules-systemjs": transformModulesSystemjs,
-  "transform-modules-umd": transformModulesUmd,
-  "transform-named-capturing-groups-regex": transformNamedCapturingGroupsRegex,
-  "transform-new-target": transformNewTarget,
-  "transform-object-super": transformObjectSuper,
-  "transform-parameters": transformParameters,
-  "transform-property-literals": transformPropertyLiterals,
-  "transform-regenerator": transformRegenerator,
-  "transform-reserved-words": transformReservedWords,
-  "transform-shorthand-properties": transformShorthandProperties,
-  "transform-spread": transformSpread,
-  "transform-sticky-regex": transformStickyRegex,
-  "transform-template-literals": transformTemplateLiterals,
-  "transform-typeof-symbol": transformTypeofSymbol,
-  "transform-unicode-escapes": transformUnicodeEscapes,
-  "transform-unicode-regex": transformUnicodeRegex,
+  "bugfix/transform-async-arrows-in-class": () => bugfixAsyncArrowsInClass,
+  "bugfix/transform-edge-default-parameters": () => bugfixEdgeDefaultParameters,
+  "bugfix/transform-edge-function-name": () => bugfixEdgeFunctionName,
+  "bugfix/transform-safari-block-shadowing": () => bugfixSafariBlockShadowing,
+  "bugfix/transform-safari-for-shadowing": () => bugfixSafariForShadowing,
+  "bugfix/transform-tagged-template-caching": () => bugfixTaggedTemplateCaching,
+  "bugfix/transform-v8-spread-parameters-in-optional-chaining": () =>
+    bugfixV8SpreadParametersInOptionalChaining,
+  "proposal-async-generator-functions": () => proposalAsyncGeneratorFunctions,
+  "proposal-class-properties": () => proposalClassProperties,
+  "proposal-dynamic-import": () => proposalDynamicImport,
+  "proposal-export-namespace-from": () => proposalExportNamespaceFrom,
+  "proposal-json-strings": () => proposalJsonStrings,
+  "proposal-logical-assignment-operators": () =>
+    proposalLogicalAssignmentOperators,
+  "proposal-nullish-coalescing-operator": () =>
+    proposalNullishCoalescingOperator,
+  "proposal-numeric-separator": () => proposalNumericSeparator,
+  "proposal-object-rest-spread": () => proposalObjectRestSpread,
+  "proposal-optional-catch-binding": () => proposalOptionalCatchBinding,
+  "proposal-optional-chaining": () => proposalOptionalChaining,
+  "proposal-private-methods": () => proposalPrivateMethods,
+  "proposal-unicode-property-regex": () => proposalUnicodePropertyRegex,
+  "syntax-async-generators": () => syntaxAsyncGenerators,
+  "syntax-class-properties": () => syntaxClassProperties,
+  "syntax-dynamic-import": () => syntaxDynamicImport,
+  "syntax-export-namespace-from": () => syntaxExportNamespaceFrom,
+  "syntax-json-strings": () => syntaxJsonStrings,
+  "syntax-logical-assignment-operators": () => syntaxLogicalAssignmentOperators,
+  "syntax-nullish-coalescing-operator": () => syntaxNullishCoalescingOperator,
+  "syntax-numeric-separator": () => syntaxNumericSeparator,
+  "syntax-object-rest-spread": () => syntaxObjectRestSpread,
+  "syntax-optional-catch-binding": () => syntaxOptionalCatchBinding,
+  "syntax-optional-chaining": () => syntaxOptionalChaining,
+  "syntax-top-level-await": () => syntaxTopLevelAwait,
+  "transform-arrow-functions": () => transformArrowFunctions,
+  "transform-async-to-generator": () => transformAsyncToGenerator,
+  "transform-block-scoped-functions": () => transformBlockScopedFunctions,
+  "transform-block-scoping": () => transformBlockScoping,
+  "transform-classes": () => transformClasses,
+  "transform-computed-properties": () => transformComputedProperties,
+  "transform-destructuring": () => transformDestructuring,
+  "transform-dotall-regex": () => transformDotallRegex,
+  "transform-duplicate-keys": () => transformDuplicateKeys,
+  "transform-exponentiation-operator": () => transformExponentialOperator,
+  "transform-for-of": () => transformForOf,
+  "transform-function-name": () => transformFunctionName,
+  "transform-literals": () => transformLiterals,
+  "transform-member-expression-literals": () =>
+    transformMemberExpressionLiterals,
+  "transform-modules-amd": () => transformModulesAmd,
+  "transform-modules-commonjs": () => transformModulesCommonjs,
+  "transform-modules-systemjs": () => transformModulesSystemjs,
+  "transform-modules-umd": () => transformModulesUmd,
+  "transform-named-capturing-groups-regex": () =>
+    transformNamedCapturingGroupsRegex,
+  "transform-new-target": () => transformNewTarget,
+  "transform-object-super": () => transformObjectSuper,
+  "transform-parameters": () => transformParameters,
+  "transform-property-literals": () => transformPropertyLiterals,
+  "transform-regenerator": () => transformRegenerator,
+  "transform-reserved-words": () => transformReservedWords,
+  "transform-shorthand-properties": () => transformShorthandProperties,
+  "transform-spread": () => transformSpread,
+  "transform-sticky-regex": () => transformStickyRegex,
+  "transform-template-literals": () => transformTemplateLiterals,
+  "transform-typeof-symbol": () => transformTypeofSymbol,
+  "transform-unicode-escapes": () => transformUnicodeEscapes,
+  "transform-unicode-regex": () => transformUnicodeRegex,
 };
diff --git a/packages/babel-preset-env/src/index.js b/packages/babel-preset-env/src/index.js
@@ -81,7 +81,7 @@ function getPluginList(proposals: boolean, bugfixes: boolean) {
 }
 
 const getPlugin = (pluginName: string) => {
-  const plugin = availablePlugins[pluginName];
+  const plugin = availablePlugins[pluginName]();
 
   if (!plugin) {
     throw new Error(