1 line
12 KiB
Plaintext
1 line
12 KiB
Plaintext
{"version":3,"names":["declare","api","opt","assertVersion","types","t","template","loose","classWeakSets","WeakMap","fieldsWeakSets","unshadow","name","targetScope","scope","hasOwnBinding","rename","parent","injectToFieldInit","fieldPath","expr","before","node","value","get","insertBefore","insertAfter","set","unaryExpression","injectInitialization","classPath","init","firstFieldPath","consturctorPath","el","isClassProperty","isClassPrivateProperty","static","isClassMethod","kind","injectConstructorInit","expressionStatement","getWeakSetId","weakSets","outerClass","reference","inject","id","generateUidIdentifier","expression","ast","cloneNode","newExpr","newExpression","identifier","annotateAsPure","inherits","syntaxPlugin","default","pre","enableFeature","file","FEATURES","privateIn","visitor","BinaryExpression","path","state","operator","isPrivateName","left","privateElement","findParent","isClass","find","isPrivate","key","parentPath","isPattern","replaceWith","type","buildCheckInRHS","right"],"sources":["../src/index.ts"],"sourcesContent":["import { declare } from \"@babel/helper-plugin-utils\";\nimport syntaxPlugin from \"@babel/plugin-syntax-private-property-in-object\";\nimport {\n enableFeature,\n FEATURES,\n injectInitialization as injectConstructorInit,\n buildCheckInRHS,\n} from \"@babel/helper-create-class-features-plugin\";\nimport annotateAsPure from \"@babel/helper-annotate-as-pure\";\nimport type * as t from \"@babel/types\";\nimport type { NodePath, Scope } from \"@babel/traverse\";\n\nexport interface Options {\n loose?: boolean;\n}\nexport default declare((api, opt: Options) => {\n api.assertVersion(7);\n const { types: t, template } = api;\n const { loose } = opt;\n\n // NOTE: When using the class fields or private methods plugins,\n // they will also take care of '#priv in obj' checks when visiting\n // the ClassExpression or ClassDeclaration nodes.\n // The visitor of this plugin is only effective when not compiling\n // private fields and methods.\n\n const classWeakSets: WeakMap<t.Class, t.Identifier> = new WeakMap();\n const fieldsWeakSets: WeakMap<\n t.ClassPrivateProperty | t.ClassPrivateMethod,\n t.Identifier\n > = new WeakMap();\n\n function unshadow(name: string, targetScope: Scope, scope: Scope) {\n while (scope !== targetScope) {\n if (scope.hasOwnBinding(name)) scope.rename(name);\n scope = scope.parent;\n }\n }\n\n function injectToFieldInit(\n fieldPath: NodePath<t.ClassPrivateProperty | t.ClassProperty>,\n expr: t.Expression,\n before = false,\n ) {\n if (fieldPath.node.value) {\n const value = fieldPath.get(\"value\");\n if (before) {\n value.insertBefore(expr);\n } else {\n value.insertAfter(expr);\n }\n } else {\n fieldPath.set(\"value\", t.unaryExpression(\"void\", expr));\n }\n }\n\n function injectInitialization(\n classPath: NodePath<t.Class>,\n init: t.Expression,\n ) {\n let firstFieldPath;\n let consturctorPath;\n\n for (const el of classPath.get(\"body.body\")) {\n if (\n (el.isClassProperty() || el.isClassPrivateProperty()) &&\n !el.node.static\n ) {\n firstFieldPath = el;\n break;\n }\n if (!consturctorPath && el.isClassMethod({ kind: \"constructor\" })) {\n consturctorPath = el;\n }\n }\n\n if (firstFieldPath) {\n injectToFieldInit(firstFieldPath, init, true);\n } else {\n injectConstructorInit(classPath, consturctorPath, [\n t.expressionStatement(init),\n ]);\n }\n }\n\n function getWeakSetId<Ref extends t.Node>(\n weakSets: WeakMap<Ref, t.Identifier>,\n outerClass: NodePath<t.Class>,\n reference: NodePath<Ref>,\n name = \"\",\n inject: (\n reference: NodePath<Ref>,\n expression: t.Expression,\n before?: boolean,\n ) => void,\n ) {\n let id = weakSets.get(reference.node);\n\n if (!id) {\n id = outerClass.scope.generateUidIdentifier(`${name || \"\"} brandCheck`);\n weakSets.set(reference.node, id);\n\n inject(reference, template.expression.ast`${t.cloneNode(id)}.add(this)`);\n\n const newExpr = t.newExpression(t.identifier(\"WeakSet\"), []);\n annotateAsPure(newExpr);\n\n outerClass.insertBefore(template.ast`var ${id} = ${newExpr}`);\n }\n\n return t.cloneNode(id);\n }\n\n return {\n name: \"proposal-private-property-in-object\",\n inherits: syntaxPlugin.default,\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.privateIn, loose);\n },\n visitor: {\n BinaryExpression(path, state) {\n const { node } = path;\n const { file } = state;\n if (node.operator !== \"in\") return;\n if (!t.isPrivateName(node.left)) return;\n\n const { name } = node.left.id;\n\n let privateElement: NodePath<\n t.ClassPrivateMethod | t.ClassPrivateProperty\n >;\n const outerClass = path.findParent(path => {\n if (!path.isClass()) return false;\n\n privateElement = path.get(\"body.body\").find(\n ({ node }) =>\n // fixme: Support class accessor property\n t.isPrivate(node) && node.key.id.name === name,\n ) as NodePath<t.ClassPrivateMethod | t.ClassPrivateProperty>;\n\n return !!privateElement;\n }) as NodePath<t.Class>;\n\n if (outerClass.parentPath.scope.path.isPattern()) {\n outerClass.replaceWith(\n template.ast`(() => ${outerClass.node})()` as t.Statement,\n );\n // The injected class will be queued and eventually transformed when visited\n return;\n }\n\n if (privateElement.node.type === \"ClassPrivateMethod\") {\n if (privateElement.node.static) {\n if (outerClass.node.id) {\n unshadow(outerClass.node.id.name, outerClass.scope, path.scope);\n } else {\n outerClass.set(\"id\", path.scope.generateUidIdentifier(\"class\"));\n }\n path.replaceWith(\n template.expression.ast`\n ${t.cloneNode(outerClass.node.id)} === ${buildCheckInRHS(\n node.right,\n file,\n )}\n `,\n );\n } else {\n const id = getWeakSetId(\n classWeakSets,\n outerClass,\n outerClass,\n outerClass.node.id?.name,\n injectInitialization,\n );\n\n path.replaceWith(\n template.expression.ast`${id}.has(${buildCheckInRHS(\n node.right,\n file,\n )})`,\n );\n }\n } else {\n // Private fields might not all be initialized: see the 'halfConstructed'\n // example at https://v8.dev/features/private-brand-checks.\n\n const id = getWeakSetId<t.ClassPrivateProperty>(\n fieldsWeakSets,\n outerClass,\n privateElement as NodePath<t.ClassPrivateProperty>,\n privateElement.node.key.id.name,\n injectToFieldInit,\n );\n\n path.replaceWith(\n template.expression.ast`${id}.has(${buildCheckInRHS(\n node.right,\n file,\n )})`,\n );\n }\n },\n },\n };\n});\n"],"mappings":";;;;;;AAAA;AACA;AACA;AAMA;AAA4D,eAO7C,IAAAA,0BAAO,EAAC,CAACC,GAAG,EAAEC,GAAY,KAAK;EAC5CD,GAAG,CAACE,aAAa,CAAC,CAAC,CAAC;EACpB,MAAM;IAAEC,KAAK,EAAEC,CAAC;IAAEC;EAAS,CAAC,GAAGL,GAAG;EAClC,MAAM;IAAEM;EAAM,CAAC,GAAGL,GAAG;;EAQrB,MAAMM,aAA6C,GAAG,IAAIC,OAAO,EAAE;EACnE,MAAMC,cAGL,GAAG,IAAID,OAAO,EAAE;EAEjB,SAASE,QAAQ,CAACC,IAAY,EAAEC,WAAkB,EAAEC,KAAY,EAAE;IAChE,OAAOA,KAAK,KAAKD,WAAW,EAAE;MAC5B,IAAIC,KAAK,CAACC,aAAa,CAACH,IAAI,CAAC,EAAEE,KAAK,CAACE,MAAM,CAACJ,IAAI,CAAC;MACjDE,KAAK,GAAGA,KAAK,CAACG,MAAM;IACtB;EACF;EAEA,SAASC,iBAAiB,CACxBC,SAA6D,EAC7DC,IAAkB,EAClBC,MAAM,GAAG,KAAK,EACd;IACA,IAAIF,SAAS,CAACG,IAAI,CAACC,KAAK,EAAE;MACxB,MAAMA,KAAK,GAAGJ,SAAS,CAACK,GAAG,CAAC,OAAO,CAAC;MACpC,IAAIH,MAAM,EAAE;QACVE,KAAK,CAACE,YAAY,CAACL,IAAI,CAAC;MAC1B,CAAC,MAAM;QACLG,KAAK,CAACG,WAAW,CAACN,IAAI,CAAC;MACzB;IACF,CAAC,MAAM;MACLD,SAAS,CAACQ,GAAG,CAAC,OAAO,EAAEtB,CAAC,CAACuB,eAAe,CAAC,MAAM,EAAER,IAAI,CAAC,CAAC;IACzD;EACF;EAEA,SAASS,oBAAoB,CAC3BC,SAA4B,EAC5BC,IAAkB,EAClB;IACA,IAAIC,cAAc;IAClB,IAAIC,eAAe;IAEnB,KAAK,MAAMC,EAAE,IAAIJ,SAAS,CAACN,GAAG,CAAC,WAAW,CAAC,EAAE;MAC3C,IACE,CAACU,EAAE,CAACC,eAAe,EAAE,IAAID,EAAE,CAACE,sBAAsB,EAAE,KACpD,CAACF,EAAE,CAACZ,IAAI,CAACe,MAAM,EACf;QACAL,cAAc,GAAGE,EAAE;QACnB;MACF;MACA,IAAI,CAACD,eAAe,IAAIC,EAAE,CAACI,aAAa,CAAC;QAAEC,IAAI,EAAE;MAAc,CAAC,CAAC,EAAE;QACjEN,eAAe,GAAGC,EAAE;MACtB;IACF;IAEA,IAAIF,cAAc,EAAE;MAClBd,iBAAiB,CAACc,cAAc,EAAED,IAAI,EAAE,IAAI,CAAC;IAC/C,CAAC,MAAM;MACL,IAAAS,qDAAqB,EAACV,SAAS,EAAEG,eAAe,EAAE,CAChD5B,CAAC,CAACoC,mBAAmB,CAACV,IAAI,CAAC,CAC5B,CAAC;IACJ;EACF;EAEA,SAASW,YAAY,CACnBC,QAAoC,EACpCC,UAA6B,EAC7BC,SAAwB,EACxBjC,IAAI,GAAG,EAAE,EACTkC,MAIS,EACT;IACA,IAAIC,EAAE,GAAGJ,QAAQ,CAACnB,GAAG,CAACqB,SAAS,CAACvB,IAAI,CAAC;IAErC,IAAI,CAACyB,EAAE,EAAE;MACPA,EAAE,GAAGH,UAAU,CAAC9B,KAAK,CAACkC,qBAAqB,CAAE,GAAEpC,IAAI,IAAI,EAAG,aAAY,CAAC;MACvE+B,QAAQ,CAAChB,GAAG,CAACkB,SAAS,CAACvB,IAAI,EAAEyB,EAAE,CAAC;MAEhCD,MAAM,CAACD,SAAS,EAAEvC,QAAQ,CAAC2C,UAAU,CAACC,GAAI,GAAE7C,CAAC,CAAC8C,SAAS,CAACJ,EAAE,CAAE,YAAW,CAAC;MAExE,MAAMK,OAAO,GAAG/C,CAAC,CAACgD,aAAa,CAAChD,CAAC,CAACiD,UAAU,CAAC,SAAS,CAAC,EAAE,EAAE,CAAC;MAC5D,IAAAC,6BAAc,EAACH,OAAO,CAAC;MAEvBR,UAAU,CAACnB,YAAY,CAACnB,QAAQ,CAAC4C,GAAI,OAAMH,EAAG,MAAKK,OAAQ,EAAC,CAAC;IAC/D;IAEA,OAAO/C,CAAC,CAAC8C,SAAS,CAACJ,EAAE,CAAC;EACxB;EAEA,OAAO;IACLnC,IAAI,EAAE,qCAAqC;IAC3C4C,QAAQ,EAAEC,oCAAY,CAACC,OAAO;IAC9BC,GAAG,GAAG;MAGJ,IAAAC,8CAAa,EAAC,IAAI,CAACC,IAAI,EAAEC,yCAAQ,CAACC,SAAS,EAAExD,KAAK,CAAC;IACrD,CAAC;IACDyD,OAAO,EAAE;MACPC,gBAAgB,CAACC,IAAI,EAAEC,KAAK,EAAE;QAC5B,MAAM;UAAE7C;QAAK,CAAC,GAAG4C,IAAI;QACrB,MAAM;UAAEL;QAAK,CAAC,GAAGM,KAAK;QACtB,IAAI7C,IAAI,CAAC8C,QAAQ,KAAK,IAAI,EAAE;QAC5B,IAAI,CAAC/D,CAAC,CAACgE,aAAa,CAAC/C,IAAI,CAACgD,IAAI,CAAC,EAAE;QAEjC,MAAM;UAAE1D;QAAK,CAAC,GAAGU,IAAI,CAACgD,IAAI,CAACvB,EAAE;QAE7B,IAAIwB,cAEH;QACD,MAAM3B,UAAU,GAAGsB,IAAI,CAACM,UAAU,CAACN,IAAI,IAAI;UACzC,IAAI,CAACA,IAAI,CAACO,OAAO,EAAE,EAAE,OAAO,KAAK;UAEjCF,cAAc,GAAGL,IAAI,CAAC1C,GAAG,CAAC,WAAW,CAAC,CAACkD,IAAI,CACzC,CAAC;YAAEpD;UAAK,CAAC;UAEPjB,CAAC,CAACsE,SAAS,CAACrD,IAAI,CAAC,IAAIA,IAAI,CAACsD,GAAG,CAAC7B,EAAE,CAACnC,IAAI,KAAKA,IAAI,CACU;UAE5D,OAAO,CAAC,CAAC2D,cAAc;QACzB,CAAC,CAAsB;QAEvB,IAAI3B,UAAU,CAACiC,UAAU,CAAC/D,KAAK,CAACoD,IAAI,CAACY,SAAS,EAAE,EAAE;UAChDlC,UAAU,CAACmC,WAAW,CACpBzE,QAAQ,CAAC4C,GAAI,UAASN,UAAU,CAACtB,IAAK,KAAI,CAC3C;UAED;QACF;QAEA,IAAIiD,cAAc,CAACjD,IAAI,CAAC0D,IAAI,KAAK,oBAAoB,EAAE;UACrD,IAAIT,cAAc,CAACjD,IAAI,CAACe,MAAM,EAAE;YAC9B,IAAIO,UAAU,CAACtB,IAAI,CAACyB,EAAE,EAAE;cACtBpC,QAAQ,CAACiC,UAAU,CAACtB,IAAI,CAACyB,EAAE,CAACnC,IAAI,EAAEgC,UAAU,CAAC9B,KAAK,EAAEoD,IAAI,CAACpD,KAAK,CAAC;YACjE,CAAC,MAAM;cACL8B,UAAU,CAACjB,GAAG,CAAC,IAAI,EAAEuC,IAAI,CAACpD,KAAK,CAACkC,qBAAqB,CAAC,OAAO,CAAC,CAAC;YACjE;YACAkB,IAAI,CAACa,WAAW,CACdzE,QAAQ,CAAC2C,UAAU,CAACC,GAAI;AACtC,kBAAkB7C,CAAC,CAAC8C,SAAS,CAACP,UAAU,CAACtB,IAAI,CAACyB,EAAE,CAAE,QAAO,IAAAkC,gDAAe,EACxD3D,IAAI,CAAC4D,KAAK,EACVrB,IAAI,CACJ;AAChB,eAAe,CACF;UACH,CAAC,MAAM;YAAA;YACL,MAAMd,EAAE,GAAGL,YAAY,CACrBlC,aAAa,EACboC,UAAU,EACVA,UAAU,yBACVA,UAAU,CAACtB,IAAI,CAACyB,EAAE,qBAAlB,oBAAoBnC,IAAI,EACxBiB,oBAAoB,CACrB;YAEDqC,IAAI,CAACa,WAAW,CACdzE,QAAQ,CAAC2C,UAAU,CAACC,GAAI,GAAEH,EAAG,QAAO,IAAAkC,gDAAe,EACjD3D,IAAI,CAAC4D,KAAK,EACVrB,IAAI,CACJ,GAAE,CACL;UACH;QACF,CAAC,MAAM;;UAIL,MAAMd,EAAE,GAAGL,YAAY,CACrBhC,cAAc,EACdkC,UAAU,EACV2B,cAAc,EACdA,cAAc,CAACjD,IAAI,CAACsD,GAAG,CAAC7B,EAAE,CAACnC,IAAI,EAC/BM,iBAAiB,CAClB;UAEDgD,IAAI,CAACa,WAAW,CACdzE,QAAQ,CAAC2C,UAAU,CAACC,GAAI,GAAEH,EAAG,QAAO,IAAAkC,gDAAe,EACjD3D,IAAI,CAAC4D,KAAK,EACVrB,IAAI,CACJ,GAAE,CACL;QACH;MACF;IACF;EACF,CAAC;AACH,CAAC,CAAC;AAAA"} |