@babel/plugin-transform-class-static-block - npm Package Compare versions

Comparing version 8.0.0-rc.4 to 8.0.0-rc.5

lib/index.js

 import { declare } from '@babel/helper-plugin-utils';
 import { buildNamedEvaluationVisitor, enableFeature, FEATURES } from '@babel/helper-create-class-features-plugin';
 
-function generateUid(scope, denyList) {
+function generateUid(denyList) {
   const name = "";
@@ -25,3 +25,3 @@ let uid;
 }) => {
-  assertVersion("^7.12.0 || ^8.0.0 || 8.0.0-rc.4");
+  assertVersion("^7.12.0 || ^8.0.0 || 8.0.0-rc.5");
   const rawNamedEvaluationVisitor = buildNamedEvaluationVisitor(path => {
@@ -129,3 +129,3 @@ if (!path.isClassExpression()) return false;
             }
-            const staticBlockPrivateId = generateUid(scope, privateNames);
+            const staticBlockPrivateId = generateUid(privateNames);
             const staticBlockRef = t.privateName(t.identifier(staticBlockPrivateId));
@@ -132,0 +132,0 @@ classBody.pushContainer("body", [t.classPrivateProperty(staticBlockRef, init, [], true)]);

lib/index.js.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.js","sources":["../src/index.ts"],"sourcesContent":["import { declare } from \"@babel/helper-plugin-utils\";\nimport type { NodePath, Scope, types as t } from \"@babel/core\";\n\nimport {\n  buildNamedEvaluationVisitor,\n  enableFeature,\n  FEATURES,\n} from \"@babel/helper-create-class-features-plugin\";\n\n/**\n * Generate a uid that is not in `denyList`\n *\n * @param {Scope} scope\n * @param {Set<string>} denyList a deny list that the generated uid should avoid\n * @returns\n */\nfunction generateUid(scope: Scope, denyList: Set<string>) {\n  const name = \"\";\n  let uid;\n  let i = 1;\n  do {\n    uid = `_${name}`;\n    if (i > 1) uid += i;\n    i++;\n  } while (denyList.has(uid));\n  return uid;\n}\n\nfunction mapLast<T>(arr: T[], fn: (value: T) => T): T[] {\n  if (arr.length === 0) return arr;\n  return [...arr.slice(0, -1), fn(arr[arr.length - 1])];\n}\n\nexport default declare(({ types: t, template, traverse, assertVersion }) => {\n  assertVersion(REQUIRED_VERSION(\"^7.12.0 || ^8.0.0\"));\n\n  const rawNamedEvaluationVisitor = buildNamedEvaluationVisitor(\n    (path: NodePath) => {\n      if (!path.isClassExpression()) return false;\n      for (let i = path.node.body.body.length - 1; i >= 0; i--) {\n        const el = path.node.body.body[i];\n        if (t.isStaticBlock(el)) {\n          return true;\n        }\n        if (\n          (t.isClassProperty(el) || t.isClassPrivateProperty(el)) &&\n          el.static\n        ) {\n          break;\n        }\n      }\n      return false;\n    },\n    (classPath: NodePath<t.ClassExpression>, state, name) => {\n      const nameNode = typeof name === \"string\" ? t.stringLiteral(name) : name;\n\n      classPath.get(\"body\").unshiftContainer(\n        \"body\",\n        t.staticBlock([\n          template.statement.ast`\n            ${state.addHelper(\"setFunctionName\")}(this, ${nameNode});\n          `,\n        ]),\n      );\n    },\n  );\n\n  const namedEvaluationVisitor = traverse.visitors.explode(\n    rawNamedEvaluationVisitor,\n  );\n\n  const maybeSequenceExpression = (\n    expressions: t.Expression[],\n  ): t.Expression => {\n    if (expressions.length === 1) {\n      return expressions[0];\n    } else {\n      return t.sequenceExpression(expressions);\n    }\n  };\n\n  const blocksToExpressions = (blocks: t.StaticBlock[]) =>\n    blocks.map(block => {\n      const { body } = block;\n      if (body.length === 1 && t.isExpressionStatement(body[0])) {\n        // We special-case the single expression case to avoid the iife, since\n        // it's common.\n        return t.inheritsComments(\n          t.inheritsComments(body[0].expression, body[0]),\n          block,\n        );\n      }\n      return t.inheritsComments(\n        template.expression.ast`(() => { ${body} })()`,\n        block,\n      );\n    });\n\n  const prependToInitializer = (\n    prop: t.ClassProperty | t.ClassPrivateProperty,\n    expressions: t.Expression[],\n  ) => {\n    prop.value = prop.value\n      ? t.sequenceExpression([...expressions, prop.value])\n      : maybeSequenceExpression(\n          mapLast(expressions, expr => t.unaryExpression(\"void\", expr)),\n        );\n  };\n\n  return {\n    name: \"transform-class-static-block\",\n    manipulateOptions: undefined,\n    pre() {\n      // Enable this in @babel/helper-create-class-features-plugin, so that it\n      // can be handled by the private fields and methods transform.\n      enableFeature(this.file, FEATURES.staticBlocks, /* loose */ false);\n    },\n\n    visitor: {\n      // Run on ClassBody and not on class so that if @babel/helper-create-class-features-plugin\n      // is enabled it can generate optimized output without passing from the intermediate\n      // private fields representation.\n      ClassBody(classBody) {\n        const { scope } = classBody;\n\n        // If needed, add the name to the class\n        let parentPath: NodePath<t.Node> = classBody.parentPath;\n        if (parentPath.isClassExpression() && !parentPath.node.id) {\n          do ({ parentPath } = parentPath);\n          while (\n            parentPath &&\n            !namedEvaluationVisitor[parentPath.type] &&\n            !parentPath.isStatement()\n          );\n          if (parentPath) {\n            namedEvaluationVisitor[parentPath.type]?.enter!.forEach(f =>\n              f.call(this, parentPath, this),\n            );\n          }\n        }\n\n        const pendingStaticBlocks: t.StaticBlock[] = [];\n        let lastStaticProp:\n          | null\n          | NodePath<t.ClassProperty>\n          | NodePath<t.ClassPrivateProperty> = null;\n\n        for (const path of classBody.get(\"body\")) {\n          if (path.isStaticBlock()) {\n            pendingStaticBlocks.push(path.node);\n            path.remove();\n          } else if (\n            path.isClassProperty({ static: true }) ||\n            path.isClassPrivateProperty({ static: true })\n      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classBody.parentPath.isExpression();\n          if (\n            pendingStaticBlocks.length > 1 ||\n            (pendingStaticBlocks[0].body.length === 1 &&\n              t.isExpressionStatement(pendingStaticBlocks[0].body[0]))\n          ) {\n            const expressions = blocksToExpressions(pendingStaticBlocks);\n            if (needsCompletionValue) {\n              expressions.push(t.thisExpression());\n            }\n            arrowBody = maybeSequenceExpression(expressions);\n          } else {\n            arrowBody = t.blockStatement(pendingStaticBlocks[0].body);\n            if (needsCompletionValue) {\n              arrowBody.body.push(t.returnStatement(t.thisExpression()));\n            }\n          }\n          const init = template.expression.ast`${tmp} = () => ${arrowBody}`;\n\n          if (lastStaticProp) {\n            prependToInitializer(lastStaticProp.node, [init]);\n          } else {\n            // If there are no static fields at all, it's safe to inject 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the\n            // tmp variable to preserve the class as the result value, because\n            // the call will already return the class itself.\n            classBody.parentPath.replaceWith(\n              t.sequenceExpression([\n                classBody.parent as t.ClassExpression,\n                staticBlockClosureCall,\n              ]),\n            );\n          } else {\n            classBody.parentPath.insertAfter(\n              t.expressionStatement(staticBlockClosureCall),\n            );\n          }\n        }\n      },\n    },\n  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rawNamedEvaluationVisitor,\n  );\n\n  const maybeSequenceExpression = (\n    expressions: t.Expression[],\n  ): t.Expression => {\n    if (expressions.length === 1) {\n      return expressions[0];\n    } else {\n      return t.sequenceExpression(expressions);\n    }\n  };\n\n  const blocksToExpressions = (blocks: t.StaticBlock[]) =>\n    blocks.map(block => {\n      const { body } = block;\n      if (body.length === 1 && t.isExpressionStatement(body[0])) {\n        // We special-case the single expression case to avoid the iife, since\n        // it's common.\n        return t.inheritsComments(\n          t.inheritsComments(body[0].expression, body[0]),\n          block,\n        );\n      }\n      return t.inheritsComments(\n        template.expression.ast`(() => { ${body} })()`,\n        block,\n      );\n    });\n\n  const prependToInitializer = (\n    prop: t.ClassProperty | t.ClassPrivateProperty,\n    expressions: t.Expression[],\n  ) => {\n    prop.value = prop.value\n      ? t.sequenceExpression([...expressions, prop.value])\n      : maybeSequenceExpression(\n          mapLast(expressions, expr => t.unaryExpression(\"void\", expr)),\n        );\n  };\n\n  return {\n    name: \"transform-class-static-block\",\n    manipulateOptions: undefined,\n    pre() {\n      // Enable this in @babel/helper-create-class-features-plugin, so that it\n      // can be handled by the private fields and methods transform.\n      enableFeature(this.file, FEATURES.staticBlocks, /* loose */ false);\n    },\n\n    visitor: {\n      // Run on ClassBody and not on class so that if @babel/helper-create-class-features-plugin\n      // is enabled it can generate optimized output without passing from the intermediate\n      // private fields representation.\n      ClassBody(classBody) {\n        const { scope } = classBody;\n\n        // If needed, add the name to the class\n        let parentPath: NodePath<t.Node> = classBody.parentPath;\n        if (parentPath.isClassExpression() && !parentPath.node.id) {\n          do ({ parentPath } = parentPath);\n          while (\n            parentPath &&\n            !namedEvaluationVisitor[parentPath.type] &&\n            !parentPath.isStatement()\n          );\n          if (parentPath) {\n            namedEvaluationVisitor[parentPath.type]?.enter!.forEach(f =>\n              f.call(this, parentPath, this),\n            );\n          }\n        }\n\n        const pendingStaticBlocks: t.StaticBlock[] = [];\n        let lastStaticProp:\n          | null\n          | NodePath<t.ClassProperty>\n          | NodePath<t.ClassPrivateProperty> = null;\n\n        for (const path of classBody.get(\"body\")) {\n          if (path.isStaticBlock()) {\n            pendingStaticBlocks.push(path.node);\n            path.remove();\n          } else if (\n            path.isClassProperty({ static: true }) ||\n            path.isClassPrivateProperty({ static: true })\n          ) {\n            lastStaticProp = path;\n\n            if 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pendingStaticBlocks.length > 1 ||\n            (pendingStaticBlocks[0].body.length === 1 &&\n              t.isExpressionStatement(pendingStaticBlocks[0].body[0]))\n          ) {\n            const expressions = blocksToExpressions(pendingStaticBlocks);\n            if (needsCompletionValue) {\n              expressions.push(t.thisExpression());\n            }\n            arrowBody = maybeSequenceExpression(expressions);\n          } else {\n            arrowBody = t.blockStatement(pendingStaticBlocks[0].body);\n            if (needsCompletionValue) {\n              arrowBody.body.push(t.returnStatement(t.thisExpression()));\n            }\n          }\n          const init = template.expression.ast`${tmp} = () => ${arrowBody}`;\n\n          if (lastStaticProp) {\n            prependToInitializer(lastStaticProp.node, [init]);\n          } else {\n            // If there are no static fields at all, it's safe to inject a\n            // new private properties before running the static 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package.json

 {
   "name": "@babel/plugin-transform-class-static-block",
-  "version": "8.0.0-rc.4",
+  "version": "8.0.0-rc.5",
   "description": "Transform class static blocks",
@@ -26,19 +26,19 @@ "repository": {
   "dependencies": {
-    "@babel/helper-create-class-features-plugin": "^8.0.0-rc.4",
-    "@babel/helper-plugin-utils": "^8.0.0-rc.4"
+    "@babel/helper-create-class-features-plugin": "^8.0.0-rc.5",
+    "@babel/helper-plugin-utils": "^8.0.0-rc.5"
   },
   "peerDependencies": {
-    "@babel/core": "^8.0.0-rc.4"
+    "@babel/core": "^8.0.0-rc.5"
   },
   "devDependencies": {
-    "@babel/core": "^8.0.0-rc.4",
-    "@babel/helper-plugin-test-runner": "^8.0.0-rc.4",
-    "@babel/plugin-external-helpers": "^8.0.0-rc.4",
-    "@babel/plugin-transform-class-properties": "^8.0.0-rc.4",
-    "@babel/traverse": "^8.0.0-rc.4",
-    "@babel/types": "^8.0.0-rc.4"
+    "@babel/core": "^8.0.0-rc.5",
+    "@babel/helper-plugin-test-runner": "^8.0.0-rc.5",
+    "@babel/plugin-external-helpers": "^8.0.0-rc.5",
+    "@babel/plugin-transform-class-properties": "^8.0.0-rc.5",
+    "@babel/traverse": "^8.0.0-rc.5",
+    "@babel/types": "^8.0.0-rc.5"
   },
   "homepage": "https://babel.dev/docs/en/next/babel-plugin-transform-class-static-block",
   "engines": {
-    "node": "^20.19.0 || >=22.12.0"
+    "node": "^22.18.0 || >=24.11.0"
   },
@@ -45,0 +45,0 @@ "author": "The Babel Team (https://babel.dev/team)",

No alert changes

Worsened metrics

Total package byte prevSize

24752

-0.38%

Dependency changes

• Updated

  @babel/helper-create-class-features-plugin@^8.0.0-rc.5

• Updated

  @babel/helper-plugin-utils@^8.0.0-rc.5