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rOACCT/node_modules/@babel/helper-create-class-features-plugin/lib/decorators.js.map
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decorators.js.map
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{
"version": 3,
"names": [
"hasOwnDecorators",
"node",
"decorators",
"length",
"hasDecorators",
"body",
"some",
"prop",
"key",
"value",
"t",
"objectProperty",
"identifier",
"method",
"objectMethod",
"blockStatement",
"takeDecorators",
"result",
"arrayExpression",
"map",
"decorator",
"expression",
"undefined",
"getKey",
"computed",
"isIdentifier",
"stringLiteral",
"name",
"String",
"extractElementDescriptor",
"file",
"classRef",
"superRef",
"path",
"isMethod",
"isClassMethod",
"isPrivate",
"buildCodeFrameError",
"type",
"scope",
"isTSDeclareMethod",
"ReplaceSupers",
"methodPath",
"objectRef",
"refToPreserve",
"replace",
"properties",
"kind",
"static",
"booleanLiteral",
"filter",
"Boolean",
"id",
"transformed",
"toExpression",
"push",
"nameFunction",
"isClassProperty",
"template",
"statements",
"ast",
"buildUndefinedNode",
"remove",
"objectExpression",
"addDecorateHelper",
"addHelper",
"buildDecoratedClass",
"ref",
"elements",
"initializeId",
"generateUidIdentifier",
"isDeclaration",
"isStrict",
"isInStrictMode",
"superClass",
"cloneNode",
"superId",
"generateUidIdentifierBasedOnNode",
"classDecorators",
"definitions",
"element",
"abstract",
"wrapperCall",
"nullLiteral",
"arguments",
"directives",
"directive",
"directiveLiteral",
"replacement",
"classPathDesc",
"statement",
"instanceNodes",
"wrapClass",
"replaceWith",
"get"
],
"sources": [
"../src/decorators.ts"
],
"sourcesContent": [
"// TODO(Babel 8): Remove this file\n\nimport { types as t, template } from \"@babel/core\";\nimport type { File } from \"@babel/core\";\nimport type { NodePath } from \"@babel/traverse\";\nimport ReplaceSupers from \"@babel/helper-replace-supers\";\nimport nameFunction from \"@babel/helper-function-name\";\n\ntype Decorable = Extract<t.Node, { decorators?: t.Decorator[] | null }>;\n\nexport function hasOwnDecorators(node: t.Node) {\n // @ts-expect-error(flow->ts) TODO: maybe we could add t.isDecoratable to make ts happy\n return !!(node.decorators && node.decorators.length);\n}\n\nexport function hasDecorators(node: t.Class) {\n return hasOwnDecorators(node) || node.body.body.some(hasOwnDecorators);\n}\n\nfunction prop(key: string, value?: t.Expression) {\n if (!value) return null;\n return t.objectProperty(t.identifier(key), value);\n}\n\nfunction method(key: string, body: t.Statement[]) {\n return t.objectMethod(\n \"method\",\n t.identifier(key),\n [],\n t.blockStatement(body),\n );\n}\n\nfunction takeDecorators(node: Decorable) {\n let result: t.ArrayExpression | undefined;\n if (node.decorators && node.decorators.length > 0) {\n result = t.arrayExpression(\n node.decorators.map(decorator => decorator.expression),\n );\n }\n node.decorators = undefined;\n return result;\n}\n\ntype AcceptedElement = Exclude<ClassElement, t.TSIndexSignature>;\ntype SupportedElement = Exclude<\n AcceptedElement,\n | t.ClassPrivateMethod\n | t.ClassPrivateProperty\n | t.ClassAccessorProperty\n | t.StaticBlock\n>;\n\nfunction getKey(node: SupportedElement) {\n if (node.computed) {\n return node.key;\n } else if (t.isIdentifier(node.key)) {\n return t.stringLiteral(node.key.name);\n } else {\n return t.stringLiteral(\n String(\n // A non-identifier non-computed key\n (node.key as t.StringLiteral | t.NumericLiteral | t.BigIntLiteral)\n .value,\n ),\n );\n }\n}\n\nfunction extractElementDescriptor(\n file: File,\n classRef: t.Identifier,\n superRef: t.Identifier,\n path: NodePath<AcceptedElement>,\n) {\n const isMethod = path.isClassMethod();\n if (path.isPrivate()) {\n throw path.buildCodeFrameError(\n `Private ${\n isMethod ? \"methods\" : \"fields\"\n } in decorated classes are not supported yet.`,\n );\n }\n if (path.node.type === \"ClassAccessorProperty\") {\n throw path.buildCodeFrameError(\n `Accessor properties are not supported in 2018-09 decorator transform, please specify { \"version\": \"2021-12\" } instead.`,\n );\n }\n if (path.node.type === \"StaticBlock\") {\n throw path.buildCodeFrameError(\n `Static blocks are not supported in 2018-09 decorator transform, please specify { \"version\": \"2021-12\" } instead.`,\n );\n }\n\n const { node, scope } = path as NodePath<SupportedElement>;\n\n if (!path.isTSDeclareMethod()) {\n new ReplaceSupers({\n methodPath: path as NodePath<\n Exclude<SupportedElement, t.TSDeclareMethod>\n >,\n objectRef: classRef,\n superRef,\n file,\n refToPreserve: classRef,\n }).replace();\n }\n\n const properties: t.ObjectExpression[\"properties\"] = [\n prop(\"kind\", t.stringLiteral(t.isClassMethod(node) ? node.kind : \"field\")),\n prop(\"decorators\", takeDecorators(node as Decorable)),\n prop(\"static\", node.static && t.booleanLiteral(true)),\n prop(\"key\", getKey(node)),\n ].filter(Boolean);\n\n if (t.isClassMethod(node)) {\n const id = node.computed\n ? null\n : (node.key as\n | t.Identifier\n | t.StringLiteral\n | t.NumericLiteral\n | t.BigIntLiteral);\n const transformed = t.toExpression(node);\n properties.push(\n prop(\n \"value\",\n nameFunction({ node: transformed, id, scope }) || transformed,\n ),\n );\n } else if (t.isClassProperty(node) && node.value) {\n properties.push(\n method(\"value\", template.statements.ast`return ${node.value}`),\n );\n } else {\n properties.push(prop(\"value\", scope.buildUndefinedNode()));\n }\n\n path.remove();\n\n return t.objectExpression(properties);\n}\n\nfunction addDecorateHelper(file: File) {\n return file.addHelper(\"decorate\");\n}\n\ntype ClassElement = t.Class[\"body\"][\"body\"][number];\ntype ClassElementPath = NodePath<ClassElement>;\n\nexport function buildDecoratedClass(\n ref: t.Identifier,\n path: NodePath<t.Class>,\n elements: ClassElementPath[],\n file: File,\n) {\n const { node, scope } = path;\n const initializeId = scope.generateUidIdentifier(\"initialize\");\n const isDeclaration = node.id && path.isDeclaration();\n const isStrict = path.isInStrictMode();\n const { superClass } = node;\n\n node.type = \"ClassDeclaration\";\n if (!node.id) node.id = t.cloneNode(ref);\n\n let superId: t.Identifier;\n if (superClass) {\n superId = scope.generateUidIdentifierBasedOnNode(node.superClass, \"super\");\n node.superClass = superId;\n }\n\n const classDecorators = takeDecorators(node);\n const definitions = t.arrayExpression(\n elements\n .filter(\n element =>\n // @ts-expect-error Ignore TypeScript's abstract methods (see #10514)\n !element.node.abstract && element.node.type !== \"TSIndexSignature\",\n )\n .map(path =>\n extractElementDescriptor(\n file,\n node.id,\n superId,\n // @ts-expect-error TS can not exclude TSIndexSignature\n path,\n ),\n ),\n );\n\n const wrapperCall = template.expression.ast`\n ${addDecorateHelper(file)}(\n ${classDecorators || t.nullLiteral()},\n function (${initializeId}, ${superClass ? t.cloneNode(superId) : null}) {\n ${node}\n return { F: ${t.cloneNode(node.id)}, d: ${definitions} };\n },\n ${superClass}\n )\n ` as t.CallExpression & { arguments: [unknown, t.FunctionExpression] };\n\n if (!isStrict) {\n wrapperCall.arguments[1].body.directives.push(\n t.directive(t.directiveLiteral(\"use strict\")),\n );\n }\n\n let replacement: t.Node = wrapperCall;\n let classPathDesc = \"arguments.1.body.body.0\";\n if (isDeclaration) {\n replacement = template.statement.ast`let ${ref} = ${wrapperCall}`;\n classPathDesc = \"declarations.0.init.\" + classPathDesc;\n }\n\n return {\n instanceNodes: [template.statement.ast`${t.cloneNode(initializeId)}(this)`],\n wrapClass(path: NodePath<t.Class>) {\n path.replaceWith(replacement);\n return path.get(classPathDesc) as NodePath;\n },\n };\n}\n"
],
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