@babel/plugin-transform-explicit-resource-management - npm Package Compare versions

Comparing version 8.0.0-rc.1 to 8.0.0-rc.2

lib/index.js

@@ -12,3 +12,3 @@ import { declare } from '@babel/helper-plugin-utils';
 var index = declare(api => {
-  api.assertVersion("^7.23.9 || ^8.0.0 || 8.0.0-rc.1");
+  api.assertVersion("^7.23.9 || ^8.0.0 || 8.0.0-rc.2");
   const TOP_LEVEL_USING = new Map();
@@ -83,3 +83,2 @@ function isUsingDeclaration(node) {
     name: "transform-explicit-resource-management",
-    manipulateOptions: (_, p) => p.plugins.push("explicitResourceManagement"),
     visitor: traverse.visitors.merge([transformUsingDeclarationsVisitor, {
@@ -86,0 +85,0 @@ Program(path) {

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 { unshiftForXStatementBody } from \"@babel/plugin-transform-destructuring\";\nimport { types as t, template, traverse } from \"@babel/core\";\nimport type { NodePath, Visitor, PluginPass } from \"@babel/core\";\n\nconst enum USING_KIND {\n  NORMAL,\n  AWAIT,\n}\n\n// https://tc39.es/ecma262/#sec-isanonymousfunctiondefinition\nfunction isAnonymousFunctionDefinition(\n  node: t.Node,\n): node is\n  | t.ClassExpression\n  | t.ArrowFunctionExpression\n  | t.FunctionExpression {\n  return (\n    t.isArrowFunctionExpression(node) ||\n    ((t.isFunctionExpression(node) || t.isClassExpression(node)) && !node.id)\n  );\n}\n\nfunction emitSetFunctionNameCall(\n  state: PluginPass,\n  expression: t.Expression,\n  name: string,\n) {\n  return t.callExpression(state.addHelper(\"setFunctionName\"), [\n    expression,\n    t.stringLiteral(name),\n  ]);\n}\n\nexport default declare(api => {\n  // The first Babel 7 version with usingCtx helper support.\n  api.assertVersion(REQUIRED_VERSION(\"^7.23.9 || ^8.0.0\"));\n\n  const TOP_LEVEL_USING = new Map<t.Node, USING_KIND>();\n\n  function isUsingDeclaration(node: t.Node): node is t.VariableDeclaration {\n    if (!t.isVariableDeclaration(node)) return false;\n    return (\n      node.kind === \"using\" ||\n      node.kind === \"await using\" ||\n      TOP_LEVEL_USING.has(node)\n    );\n  }\n\n  const transformUsingDeclarationsVisitor: Visitor<PluginPass> = {\n    ForOfStatement(path: NodePath<t.ForOfStatement>) {\n      const { left } = path.node;\n      if (!isUsingDeclaration(left)) return;\n\n      const { id } = left.declarations[0];\n      const tmpId = path.scope.generateUidIdentifierBasedOnNode(id);\n      left.declarations[0].id = tmpId;\n      left.kind = \"const\";\n\n      path.ensureBlock();\n      unshiftForXStatementBody(path, [\n        t.variableDeclaration(\"using\", [\n          t.variableDeclarator(id, t.cloneNode(tmpId)),\n        ]),\n      ]);\n    },\n    \"BlockStatement|StaticBlock\"(\n      path: NodePath<t.BlockStatement | t.StaticBlock>,\n      state,\n    ) {\n      let ctx: t.Identifier | null = null;\n      let needsAwait = false;\n      const scope = path.scope;\n\n      for (const node of path.node.body) {\n        if (!isUsingDeclaration(node)) continue;\n        ctx ??= scope.generateUidIdentifier(\"usingCtx\");\n        const isAwaitUsing =\n          node.kind === \"await using\" ||\n          TOP_LEVEL_USING.get(node) === USING_KIND.AWAIT;\n        needsAwait ||= isAwaitUsing;\n\n        if (!TOP_LEVEL_USING.delete(node)) {\n          node.kind = \"const\";\n        }\n        for (const decl of node.declarations) {\n          const currentInit = decl.init;\n          decl.init = t.callExpression(\n            t.memberExpression(\n              t.cloneNode(ctx),\n              isAwaitUsing ? t.identifier(\"a\") : t.identifier(\"u\"),\n            ),\n            [\n              isAnonymousFunctionDefinition(currentInit) &&\n              t.isIdentifier(decl.id)\n                ? emitSetFunctionNameCall(state, currentInit, decl.id.name)\n                : currentInit,\n            ],\n          );\n        }\n      }\n      if (!ctx) return;\n\n      const disposeCall = t.callExpression(\n        t.memberExpression(t.cloneNode(ctx), t.identifier(\"d\")),\n        [],\n      );\n\n      const replacement = template.statement.ast`\n        try {\n          var ${t.cloneNode(ctx)} = ${state.addHelper(\"usingCtx\")}();\n          ${path.node.body}\n        } catch (_) {\n          ${t.cloneNode(ctx)}.e = _;\n        } finally {\n          ${needsAwait ? t.awaitExpression(disposeCall) : disposeCall}\n        }\n      ` as t.TryStatement;\n\n      t.inherits(replacement, path.node);\n\n      const { parentPath } = path;\n      if (\n        parentPath.isFunction() ||\n        parentPath.isTryStatement() ||\n        parentPath.isCatchClause()\n      ) {\n        path.replaceWith(t.blockStatement([replacement]));\n      } else if (path.isStaticBlock()) {\n        path.node.body = [replacement];\n      } else {\n        path.replaceWith(replacement);\n      }\n    },\n  };\n\n  const transformUsingDeclarationsVisitorSkipFn: Visitor<PluginPass> =\n    traverse.visitors.merge([\n      transformUsingDeclarationsVisitor,\n      {\n        Function(path) {\n          path.skip();\n        },\n      },\n    ]);\n\n  return {\n    name: \"transform-explicit-resource-management\",\n    manipulateOptions: (_, p) => p.plugins.push(\"explicitResourceManagement\"),\n\n    visitor: traverse.visitors.merge([\n      transformUsingDeclarationsVisitor,\n      {\n        // To transform top-level using declarations, we must wrap the\n        // module body in a block after hoisting all the exports and imports.\n        // This might cause some variables to be `undefined` rather than TDZ.\n        Program(path) {\n          TOP_LEVEL_USING.clear();\n\n          if (path.node.sourceType !== \"module\") return;\n          if (!path.node.body.some(isUsingDeclaration)) return;\n\n          const innerBlockBody = [];\n          for (const stmt of path.get(\"body\")) {\n            if (stmt.isFunctionDeclaration() || stmt.isImportDeclaration()) {\n              continue;\n            }\n\n            let node: t.Statement | t.Declaration = stmt.node;\n            let shouldRemove = true;\n\n            if (stmt.isExportDefaultDeclaration()) {\n              let { declaration } = stmt.node;\n              let varId;\n              if (t.isClassDeclaration(declaration)) {\n                varId = declaration.id;\n                // Move the class id to the var binding such that the scope binding\n                // info is correct. 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stmt.node.declaration;\n              if (!node || t.isFunction(node)) continue;\n\n              stmt.replaceWith(\n                t.exportNamedDeclaration(\n                  null,\n                  Object.keys(t.getOuterBindingIdentifiers(node, false)).map(\n                    id => t.exportSpecifier(t.identifier(id), t.identifier(id)),\n                  ),\n                ),\n              );\n              shouldRemove = false;\n            } else if (stmt.isExportDeclaration()) {\n              continue;\n            }\n\n            if (t.isClassDeclaration(node)) {\n              const { id } = node;\n              node.id = t.cloneNode(id);\n              innerBlockBody.push(\n                t.variableDeclaration(\"var\", [\n                  t.variableDeclarator(id, t.toExpression(node)),\n                ]),\n              );\n            } else if (t.isVariableDeclaration(node)) {\n              if (node.kind === \"using\") {\n                TOP_LEVEL_USING.set(stmt.node, USING_KIND.NORMAL);\n              } else if (node.kind === \"await using\") {\n                TOP_LEVEL_USING.set(stmt.node, USING_KIND.AWAIT);\n              }\n              node.kind = \"var\";\n              innerBlockBody.push(node);\n            } else {\n              innerBlockBody.push(stmt.node);\n            }\n\n            if (shouldRemove) stmt.remove();\n          }\n\n          path.pushContainer(\"body\", t.blockStatement(innerBlockBody));\n        },\n        // We must transform `await using` in async functions before that\n        // async-to-generator will transform `await` expressions into `yield`\n        Function(path, state) {\n          if (path.node.async) {\n            path.traverse(transformUsingDeclarationsVisitorSkipFn, state);\n          }\n        },\n      },\n    ]),\n  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t.identifier(\"a\") : t.identifier(\"u\"),\n            ),\n            [\n              isAnonymousFunctionDefinition(currentInit) &&\n              t.isIdentifier(decl.id)\n                ? emitSetFunctionNameCall(state, currentInit, decl.id.name)\n                : currentInit,\n            ],\n          );\n        }\n      }\n      if (!ctx) return;\n\n      const disposeCall = t.callExpression(\n        t.memberExpression(t.cloneNode(ctx), t.identifier(\"d\")),\n        [],\n      );\n\n      const replacement = template.statement.ast`\n        try {\n          var ${t.cloneNode(ctx)} = ${state.addHelper(\"usingCtx\")}();\n          ${path.node.body}\n        } catch (_) {\n          ${t.cloneNode(ctx)}.e = _;\n        } finally {\n          ${needsAwait ? t.awaitExpression(disposeCall) : disposeCall}\n        }\n      ` as t.TryStatement;\n\n      t.inherits(replacement, path.node);\n\n      const { parentPath } = path;\n      if (\n        parentPath.isFunction() ||\n        parentPath.isTryStatement() ||\n        parentPath.isCatchClause()\n      ) {\n        path.replaceWith(t.blockStatement([replacement]));\n      } else if (path.isStaticBlock()) {\n        path.node.body = [replacement];\n      } else {\n        path.replaceWith(replacement);\n      }\n    },\n  };\n\n  const transformUsingDeclarationsVisitorSkipFn: Visitor<PluginPass> =\n    traverse.visitors.merge([\n      transformUsingDeclarationsVisitor,\n      {\n        Function(path) {\n          path.skip();\n        },\n      },\n    ]);\n\n  return {\n    name: \"transform-explicit-resource-management\",\n\n    visitor: traverse.visitors.merge([\n      transformUsingDeclarationsVisitor,\n      {\n        // To transform top-level using declarations, we must wrap the\n        // module body in a block after hoisting all the exports and imports.\n        // This might cause some variables to be `undefined` rather than TDZ.\n        Program(path) {\n          TOP_LEVEL_USING.clear();\n\n          if (path.node.sourceType !== \"module\") return;\n          if (!path.node.body.some(isUsingDeclaration)) return;\n\n          const innerBlockBody = [];\n          for (const stmt of path.get(\"body\")) {\n            if (stmt.isFunctionDeclaration() || stmt.isImportDeclaration()) {\n              continue;\n            }\n\n            let node: t.Statement | t.Declaration = stmt.node;\n            let shouldRemove = true;\n\n            if (stmt.isExportDefaultDeclaration()) {\n              let { declaration } = stmt.node;\n              let varId;\n              if (t.isClassDeclaration(declaration)) {\n                varId = declaration.id;\n                // Move the class id to the var binding such that the scope binding\n                // info is correct. Then we clone one to ensure inner class reference\n                // will stay same if the outer binding is mutated.\n                declaration.id = t.cloneNode(varId);\n                declaration = t.toExpression(declaration);\n              } else if (!t.isExpression(declaration)) {\n                continue;\n              }\n\n              varId ??= path.scope.generateUidIdentifier(\"_default\");\n              innerBlockBody.push(\n                t.variableDeclaration(\"var\", [\n                  t.variableDeclarator(varId, declaration),\n                ]),\n              );\n              stmt.replaceWith(\n                t.exportNamedDeclaration(null, [\n                  t.exportSpecifier(\n                    t.cloneNode(varId),\n                    t.identifier(\"default\"),\n                  ),\n                ]),\n              );\n              continue;\n            }\n\n            if (stmt.isExportNamedDeclaration()) {\n              node = 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package.json

 {
   "name": "@babel/plugin-transform-explicit-resource-management",
-  "version": "8.0.0-rc.1",
+  "version": "8.0.0-rc.2",
   "description": "Compile `using` and `await using` declarations to ES2015",
@@ -20,11 +20,11 @@ "repository": {
   "dependencies": {
-    "@babel/helper-plugin-utils": "^8.0.0-rc.1",
-    "@babel/plugin-transform-destructuring": "^8.0.0-rc.1"
+    "@babel/helper-plugin-utils": "^8.0.0-rc.2",
+    "@babel/plugin-transform-destructuring": "^8.0.0-rc.2"
   },
   "peerDependencies": {
-    "@babel/core": "^7.0.0-0"
+    "@babel/core": "^8.0.0-rc.2"
   },
   "devDependencies": {
-    "@babel/core": "^8.0.0-rc.1",
-    "@babel/helper-plugin-test-runner": "^8.0.0-rc.1"
+    "@babel/core": "^8.0.0-rc.2",
+    "@babel/helper-plugin-test-runner": "^8.0.0-rc.2"
   },
@@ -31,0 +31,0 @@ "engines": {

New alerts

Uses eval

Supply chain risk

Package uses dynamic code execution (e.g., eval()), which is a dangerous practice. This can prevent the code from running in certain environments and increases the risk that the code may contain exploits or malicious behavior.

Found 1 instance in 1 package

Fixed alerts

Uses eval

Supply chain risk

Package uses dynamic code execution (e.g., eval()), which is a dangerous practice. This can prevent the code from running in certain environments and increases the risk that the code may contain exploits or malicious behavior.

Found 1 instance in 1 package

Worsened metrics

Total package byte prevSize

26568

-1.11%

Lines of code

154

-0.65%

Dependency changes

• - Removed

  @babel/code-frame@7.29.0
  (transitive)

• - Removed

  @babel/compat-data@7.29.0
  (transitive)

• - Removed

  @babel/core@7.29.0
  (transitive)

• - Removed

  @babel/generator@7.29.1
  (transitive)

• - Removed

  @babel/helper-compilation-targets@7.28.6
  (transitive)

• - Removed

  @babel/helper-globals@7.28.0
  (transitive)

• - Removed

  @babel/helper-module-imports@7.28.6
  (transitive)

• - Removed

  @babel/helper-module-transforms@7.28.6
  (transitive)

• - Removed

  @babel/helper-string-parser@7.27.1
  (transitive)

• - Removed

  @babel/helper-validator-identifier@7.28.5
  (transitive)

• - Removed

  @babel/helper-validator-option@7.27.1
  (transitive)

• - Removed

  @babel/helpers@7.28.6
  (transitive)

• - Removed

  @babel/parser@7.29.0
  (transitive)

• - Removed

  @babel/template@7.28.6
  (transitive)

• - Removed

  @babel/traverse@7.29.0
  (transitive)

• - Removed

  @babel/types@7.29.0
  (transitive)

• - Removed

  debug@4.4.3
  (transitive)

• - Removed

  js-tokens@4.0.0
  (transitive)

• - Removed

  lru-cache@5.1.1
  (transitive)

• - Removed

  ms@2.1.3
  (transitive)

• - Removed

  semver@6.3.1
  (transitive)

• - Removed

  yallist@3.1.1
  (transitive)

• Updated

  @babel/helper-plugin-utils@^8.0.0-rc.2

• Updated

  @babel/plugin-transform-destructuring@^8.0.0-rc.2