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rOACCT/node_modules/@babel/plugin-transform-classes/lib/inline-createSuper-helpers.js.map
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inline-createSuper-helpers.js.map
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{
"version": 3,
"names": [
"helper",
"template",
"statement",
"helperIDs",
"WeakMap",
"addCreateSuperHelper",
"file",
"has",
"t",
"cloneNode",
"clone",
"get",
"addHelper",
"id",
"scope",
"generateUidIdentifier",
"set",
"fn",
"CREATE_SUPER",
"GET_PROTOTYPE_OF",
"POSSIBLE_CONSTRUCTOR_RETURN",
"path",
"unshiftContainer",
"registerDeclaration"
],
"sources": [
"../src/inline-createSuper-helpers.ts"
],
"sourcesContent": [
"import { template, types as t, type File } from \"@babel/core\";\n\nconst helper = template.statement`\n function CREATE_SUPER(Derived) {\n function isNativeReflectConstruct() {\n if (typeof Reflect === \"undefined\" || !Reflect.construct) return false;\n\n // core-js@3\n if (Reflect.construct.sham) return false;\n\n // Proxy can't be polyfilled. Every browser implemented\n // proxies before or at the same time as Reflect.construct,\n // so if they support Proxy they also support Reflect.construct.\n if (typeof Proxy === \"function\") return true;\n\n // Since Reflect.construct can't be properly polyfilled, some\n // implementations (e.g. core-js@2) don't set the correct internal slots.\n // Those polyfills don't allow us to subclass built-ins, so we need to\n // use our fallback implementation.\n try {\n // If the internal slots aren't set, this throws an error similar to\n // TypeError: this is not a Date object.\n Date.prototype.toString.call(Reflect.construct(Date, [], function() {}));\n return true;\n } catch (e) {\n return false;\n }\n }\n\n return function () {\n var Super = GET_PROTOTYPE_OF(Derived), result;\n if (isNativeReflectConstruct()) {\n // NOTE: This doesn't work if this.__proto__.constructor has been modified.\n var NewTarget = GET_PROTOTYPE_OF(this).constructor;\n result = Reflect.construct(Super, arguments, NewTarget);\n } else {\n result = Super.apply(this, arguments);\n }\n return POSSIBLE_CONSTRUCTOR_RETURN(this, result);\n }\n }\n`;\n\nconst helperIDs = new WeakMap();\n\nexport default function addCreateSuperHelper(file: File) {\n if (helperIDs.has(file)) {\n // TODO: Only use t.cloneNode in Babel 8\n // t.cloneNode isn't supported in every version\n return (t.cloneNode || t.clone)(helperIDs.get(file));\n }\n\n try {\n return file.addHelper(\"createSuper\");\n } catch {\n // Babel <7.9.0 doesn't support the helper.\n }\n\n const id = file.scope.generateUidIdentifier(\"createSuper\");\n helperIDs.set(file, id);\n\n const fn = helper({\n CREATE_SUPER: id,\n GET_PROTOTYPE_OF: file.addHelper(\"getPrototypeOf\"),\n POSSIBLE_CONSTRUCTOR_RETURN: file.addHelper(\"possibleConstructorReturn\"),\n });\n\n file.path.unshiftContainer(\"body\", [fn]);\n file.scope.registerDeclaration(file.path.get(\"body.0\"));\n\n return t.cloneNode(id);\n}\n"
],
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}
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