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Allow unknown/any in TS catch clause param (#11755)

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This commit is contained in:
Brian Ng 2020-06-30 03:40:20 -05:00 committed by Huáng Jùnliàng
parent 5b4b3a3e4a
commit 8a1d7e41f2
7 changed files with 337 additions and 6 deletions
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2
Makefile
View File

@ -1,6 +1,6 @@
FLOW_COMMIT = a1f9a4c709dcebb27a5084acf47755fbae699c25
TEST262_COMMIT = 058adfed86b1d4129996faaf50a85ea55379a66a
TYPESCRIPT_COMMIT = 5fc917be2e4dd64c8e9504d36615cd7fbfdd4cd3
TYPESCRIPT_COMMIT = ffa35d3272647fe48ddf173e1f0928f772c18630
FORCE_PUBLISH = "@babel/runtime,@babel/runtime-corejs2,@babel/runtime-corejs3,@babel/standalone"

15
packages/babel-parser/src/parser/statement.js
View File

@ -636,6 +636,16 @@ export default class StatementParser extends ExpressionParser {
return this.finishNode(node, "ThrowStatement");
}
parseCatchClauseParam(): N.Identifier {
const param = this.parseBindingAtom();
const simple = param.type === "Identifier";
this.scope.enter(simple ? SCOPE_SIMPLE_CATCH : 0);
this.checkLVal(param, BIND_LEXICAL, null, "catch clause");
return param;
}
parseTryStatement(node: N.TryStatement): N.TryStatement {
this.next();
@ -647,10 +657,7 @@ export default class StatementParser extends ExpressionParser {
this.next();
if (this.match(tt.parenL)) {
this.expect(tt.parenL);
clause.param = this.parseBindingAtom();
const simple = clause.param.type === "Identifier";
this.scope.enter(simple ? SCOPE_SIMPLE_CATCH : 0);
this.checkLVal(clause.param, BIND_LEXICAL, null, "catch clause");
clause.param = this.parseCatchClauseParam();
this.expect(tt.parenR);
} else {
clause.param = null;

11
packages/babel-parser/src/plugins/typescript/index.js
View File

@ -2660,4 +2660,15 @@ export default (superClass: Class<Parser>): Class<Parser> =>
return hasContextParam ? baseCount + 1 : baseCount;
}
parseCatchClauseParam(): N.Identifier {
const param = super.parseCatchClauseParam();
const type = this.tsTryParseTypeAnnotation();
if (type) {
param.type = type;
}
return param;
}
};

9
packages/babel-parser/test/fixtures/typescript/catch-clause/unknown/input.ts vendored Normal file
View File

@ -0,0 +1,9 @@
try {} catch (ex) {}
try {} catch (ex: unknown) {}
try {} catch (ex: any) {}
// The following can't be error'd at parse time
try {} catch (ex: A) {}
try {} catch (ex: Error) {}
try {} catch (ex: string) {}
try {} catch (ex: string | number) {}

278
packages/babel-parser/test/fixtures/typescript/catch-clause/unknown/output.json vendored Normal file
View File

@ -0,0 +1,278 @@
{
"type": "File",
"start":0,"end":244,"loc":{"start":{"line":1,"column":0},"end":{"line":9,"column":37}},
"program": {
"type": "Program",
"start":0,"end":244,"loc":{"start":{"line":1,"column":0},"end":{"line":9,"column":37}},
"sourceType": "module",
"interpreter": null,
"body": [
{
"type": "TryStatement",
"start":0,"end":20,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":20}},
"block": {
"type": "BlockStatement",
"start":4,"end":6,"loc":{"start":{"line":1,"column":4},"end":{"line":1,"column":6}},
"body": [],
"directives": []
},
"handler": {
"type": "CatchClause",
"start":7,"end":20,"loc":{"start":{"line":1,"column":7},"end":{"line":1,"column":20}},
"param": {
"type": "Identifier",
"start":14,"end":16,"loc":{"start":{"line":1,"column":14},"end":{"line":1,"column":16},"identifierName":"ex"},
"name": "ex"
},
"body": {
"type": "BlockStatement",
"start":18,"end":20,"loc":{"start":{"line":1,"column":18},"end":{"line":1,"column":20}},
"body": [],
"directives": []
}
},
"finalizer": null
},
{
"type": "TryStatement",
"start":21,"end":50,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":29}},
"block": {
"type": "BlockStatement",
"start":25,"end":27,"loc":{"start":{"line":2,"column":4},"end":{"line":2,"column":6}},
"body": [],
"directives": []
},
"handler": {
"type": "CatchClause",
"start":28,"end":50,"loc":{"start":{"line":2,"column":7},"end":{"line":2,"column":29}},
"param": {
"type": {
"type": "TSTypeAnnotation",
"start":37,"end":46,"loc":{"start":{"line":2,"column":16},"end":{"line":2,"column":25}},
"typeAnnotation": {
"type": "TSUnknownKeyword",
"start":39,"end":46,"loc":{"start":{"line":2,"column":18},"end":{"line":2,"column":25}}
}
},
"start":35,"end":37,"loc":{"start":{"line":2,"column":14},"end":{"line":2,"column":16},"identifierName":"ex"},
"name": "ex"
},
"body": {
"type": "BlockStatement",
"start":48,"end":50,"loc":{"start":{"line":2,"column":27},"end":{"line":2,"column":29}},
"body": [],
"directives": []
}
},
"finalizer": null
},
{
"type": "TryStatement",
"start":51,"end":76,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":25}},
"block": {
"type": "BlockStatement",
"start":55,"end":57,"loc":{"start":{"line":3,"column":4},"end":{"line":3,"column":6}},
"body": [],
"directives": []
},
"handler": {
"type": "CatchClause",
"start":58,"end":76,"loc":{"start":{"line":3,"column":7},"end":{"line":3,"column":25}},
"param": {
"type": {
"type": "TSTypeAnnotation",
"start":67,"end":72,"loc":{"start":{"line":3,"column":16},"end":{"line":3,"column":21}},
"typeAnnotation": {
"type": "TSAnyKeyword",
"start":69,"end":72,"loc":{"start":{"line":3,"column":18},"end":{"line":3,"column":21}}
}
},
"start":65,"end":67,"loc":{"start":{"line":3,"column":14},"end":{"line":3,"column":16},"identifierName":"ex"},
"name": "ex"
},
"body": {
"type": "BlockStatement",
"start":74,"end":76,"loc":{"start":{"line":3,"column":23},"end":{"line":3,"column":25}},
"body": [],
"directives": []
}
},
"finalizer": null,
"trailingComments": [
{
"type": "CommentLine",
"value": " The following can't be error'd at parse time",
"start":78,"end":125,"loc":{"start":{"line":5,"column":0},"end":{"line":5,"column":47}}
}
]
},
{
"type": "TryStatement",
"start":126,"end":149,"loc":{"start":{"line":6,"column":0},"end":{"line":6,"column":23}},
"block": {
"type": "BlockStatement",
"start":130,"end":132,"loc":{"start":{"line":6,"column":4},"end":{"line":6,"column":6}},
"body": [],
"directives": []
},
"handler": {
"type": "CatchClause",
"start":133,"end":149,"loc":{"start":{"line":6,"column":7},"end":{"line":6,"column":23}},
"param": {
"type": {
"type": "TSTypeAnnotation",
"start":142,"end":145,"loc":{"start":{"line":6,"column":16},"end":{"line":6,"column":19}},
"typeAnnotation": {
"type": "TSTypeReference",
"start":144,"end":145,"loc":{"start":{"line":6,"column":18},"end":{"line":6,"column":19}},
"typeName": {
"type": "Identifier",
"start":144,"end":145,"loc":{"start":{"line":6,"column":18},"end":{"line":6,"column":19},"identifierName":"A"},
"name": "A"
}
}
},
"start":140,"end":142,"loc":{"start":{"line":6,"column":14},"end":{"line":6,"column":16},"identifierName":"ex"},
"name": "ex"
},
"body": {
"type": "BlockStatement",
"start":147,"end":149,"loc":{"start":{"line":6,"column":21},"end":{"line":6,"column":23}},
"body": [],
"directives": []
}
},
"finalizer": null,
"leadingComments": [
{
"type": "CommentLine",
"value": " The following can't be error'd at parse time",
"start":78,"end":125,"loc":{"start":{"line":5,"column":0},"end":{"line":5,"column":47}}
}
]
},
{
"type": "TryStatement",
"start":150,"end":177,"loc":{"start":{"line":7,"column":0},"end":{"line":7,"column":27}},
"block": {
"type": "BlockStatement",
"start":154,"end":156,"loc":{"start":{"line":7,"column":4},"end":{"line":7,"column":6}},
"body": [],
"directives": []
},
"handler": {
"type": "CatchClause",
"start":157,"end":177,"loc":{"start":{"line":7,"column":7},"end":{"line":7,"column":27}},
"param": {
"type": {
"type": "TSTypeAnnotation",
"start":166,"end":173,"loc":{"start":{"line":7,"column":16},"end":{"line":7,"column":23}},
"typeAnnotation": {
"type": "TSTypeReference",
"start":168,"end":173,"loc":{"start":{"line":7,"column":18},"end":{"line":7,"column":23}},
"typeName": {
"type": "Identifier",
"start":168,"end":173,"loc":{"start":{"line":7,"column":18},"end":{"line":7,"column":23},"identifierName":"Error"},
"name": "Error"
}
}
},
"start":164,"end":166,"loc":{"start":{"line":7,"column":14},"end":{"line":7,"column":16},"identifierName":"ex"},
"name": "ex"
},
"body": {
"type": "BlockStatement",
"start":175,"end":177,"loc":{"start":{"line":7,"column":25},"end":{"line":7,"column":27}},
"body": [],
"directives": []
}
},
"finalizer": null
},
{
"type": "TryStatement",
"start":178,"end":206,"loc":{"start":{"line":8,"column":0},"end":{"line":8,"column":28}},
"block": {
"type": "BlockStatement",
"start":182,"end":184,"loc":{"start":{"line":8,"column":4},"end":{"line":8,"column":6}},
"body": [],
"directives": []
},
"handler": {
"type": "CatchClause",
"start":185,"end":206,"loc":{"start":{"line":8,"column":7},"end":{"line":8,"column":28}},
"param": {
"type": {
"type": "TSTypeAnnotation",
"start":194,"end":202,"loc":{"start":{"line":8,"column":16},"end":{"line":8,"column":24}},
"typeAnnotation": {
"type": "TSStringKeyword",
"start":196,"end":202,"loc":{"start":{"line":8,"column":18},"end":{"line":8,"column":24}}
}
},
"start":192,"end":194,"loc":{"start":{"line":8,"column":14},"end":{"line":8,"column":16},"identifierName":"ex"},
"name": "ex"
},
"body": {
"type": "BlockStatement",
"start":204,"end":206,"loc":{"start":{"line":8,"column":26},"end":{"line":8,"column":28}},
"body": [],
"directives": []
}
},
"finalizer": null
},
{
"type": "TryStatement",
"start":207,"end":244,"loc":{"start":{"line":9,"column":0},"end":{"line":9,"column":37}},
"block": {
"type": "BlockStatement",
"start":211,"end":213,"loc":{"start":{"line":9,"column":4},"end":{"line":9,"column":6}},
"body": [],
"directives": []
},
"handler": {
"type": "CatchClause",
"start":214,"end":244,"loc":{"start":{"line":9,"column":7},"end":{"line":9,"column":37}},
"param": {
"type": {
"type": "TSTypeAnnotation",
"start":223,"end":240,"loc":{"start":{"line":9,"column":16},"end":{"line":9,"column":33}},
"typeAnnotation": {
"type": "TSUnionType",
"start":225,"end":240,"loc":{"start":{"line":9,"column":18},"end":{"line":9,"column":33}},
"types": [
{
"type": "TSStringKeyword",
"start":225,"end":231,"loc":{"start":{"line":9,"column":18},"end":{"line":9,"column":24}}
},
{
"type": "TSNumberKeyword",
"start":234,"end":240,"loc":{"start":{"line":9,"column":27},"end":{"line":9,"column":33}}
}
]
}
},
"start":221,"end":223,"loc":{"start":{"line":9,"column":14},"end":{"line":9,"column":16},"identifierName":"ex"},
"name": "ex"
},
"body": {
"type": "BlockStatement",
"start":242,"end":244,"loc":{"start":{"line":9,"column":35},"end":{"line":9,"column":37}},
"body": [],
"directives": []
}
},
"finalizer": null
}
],
"directives": []
},
"comments": [
{
"type": "CommentLine",
"value": " The following can't be error'd at parse time",
"start":78,"end":125,"loc":{"start":{"line":5,"column":0},"end":{"line":5,"column":47}}
}
]
}

26
scripts/parser-tests/typescript/allowlist.txt
View File

@ -48,6 +48,8 @@ augmentedTypesFunction.ts
augmentedTypesInterface.ts
augmentedTypesVar.ts
bigintIndex.ts
binderBinaryExpressionStress.ts
binderBinaryExpressionStressJs.ts
cacheResolutions.ts
cachedModuleResolution1.ts
cachedModuleResolution2.ts
@ -64,6 +66,7 @@ classCannotExtendVar.ts
classExpressionWithDecorator1.ts
classExtendsAcrossFiles.ts
classExtendsMultipleBaseClasses.ts
classIndexer5.ts
classOverloadForFunction.ts
collisionExportsRequireAndClass.ts
commonSourceDir5.ts
@ -87,8 +90,10 @@ declarationEmitDestructuringOptionalBindingParametersInOverloads.ts
declarationEmitDestructuringParameterProperties.ts
declarationEmitDestructuringWithOptionalBindingParameters.ts
declarationEmitExpandoPropertyPrivateName.ts
declarationEmitExportAssignedNamespaceNoTripleSlashTypesReference.ts
declarationEmitExportAssignment.ts
declarationEmitExportDeclaration.ts
declarationEmitForModuleImportingModuleAugmentationRetainsImport.ts
declarationEmitForTypesWhichNeedImportTypes.ts
declarationEmitInterfaceWithNonEntityNameExpressionHeritage.ts
declarationEmitPrefersPathKindBasedOnBundling.ts
@ -98,6 +103,7 @@ declarationImportTypeAliasInferredAndEmittable.ts
declarationMapsMultifile.ts
declarationMapsOutFile.ts
declarationsForInferredTypeFromOtherFile.ts
declarationsIndirectGeneratedAliasReference.ts
declareModifierOnImport1.ts
decoratorMetadataRestParameterWithImportedType.ts
decoratorMetadataWithImportDeclarationNameCollision.ts
@ -195,6 +201,7 @@ exportSameNameFuncVar.ts
exportSpecifierAndExportedMemberDeclaration.ts
exportSpecifierAndLocalMemberDeclaration.ts
exportStarFromEmptyModule.ts
exportStarNotElided.ts
expressionsForbiddenInParameterInitializers.ts
extendingClassFromAliasAndUsageInIndexer.ts
extendsClauseAlreadySeen.ts
@ -209,6 +216,8 @@ functionExpressionInWithBlock.ts
functionExpressionWithResolutionOfTypeNamedArguments01.ts
gettersAndSettersErrors.ts
giant.ts
globalThisDeclarationEmit.ts
globalThisDeclarationEmit2.ts
implementClausePrecedingExtends.ts
implementsClauseAlreadySeen.ts
importAndVariableDeclarationConflict1.ts
@ -227,13 +236,24 @@ importHelpersNoHelpers.ts
importHelpersNoModule.ts
importHelpersOutFile.ts
importHelpersSystem.ts
importNonExportedMember10.ts
importNonExportedMember11.ts
importNonExportedMember4.ts
importNonExportedMember5.ts
importNonExportedMember6.ts
importNonExportedMember7.ts
importNonExportedMember8.ts
importNonExportedMember9.ts
importWithTrailingSlash.ts
importedEnumMemberMergedWithExportedAliasIsError.ts
importedModuleClassNameClash.ts
indexSignatureWithAccessibilityModifier.ts
indexSignatureWithInitializer1.ts
indexSignatureWithTrailingComma.ts
indexTypeCheck.ts
indexWithoutParamType.ts
indexerSignatureWithRestParam.ts
inferrenceInfiniteLoopWithSubtyping.ts
initializedParameterBeforeNonoptionalNotOptional.ts
interfaceMayNotBeExtendedWitACall.ts
interfaceWithImplements1.ts
@ -242,12 +262,15 @@ isLiteral1.ts
isLiteral2.ts
isolatedModulesReExportType.ts
jsEnumTagOnObjectFrozen.ts
jsExportMemberMergedWithModuleAugmentation.ts
jsFileCompilationBindDuplicateIdentifier.ts
jsFileCompilationDuplicateFunctionImplementation.ts
jsFileCompilationDuplicateFunctionImplementationFileOrderReversed.ts
jsFileCompilationExternalPackageError.ts
jsFileImportPreservedWhenUsed.ts
jsNoImplicitAnyNoCascadingReferenceErrors.ts
jsdocAccessEnumType.ts
jsdocPropertyTagInvalid.ts
jsxAttributeWithoutExpressionReact.tsx
jsxIntrinsicElementsExtendsRecord.tsx
letAndVarRedeclaration.ts
@ -335,6 +358,8 @@ preserveUnusedImports.ts
privacyCheckExternalModuleExportAssignmentOfGenericClass.ts
privacyTopLevelAmbientExternalModuleImportWithExport.ts
privacyTopLevelAmbientExternalModuleImportWithoutExport.ts
privateFieldAssignabilityFromUnknown.ts
privateNameWeakMapCollision.ts
reExportGlobalDeclaration1.ts
reExportUndefined1.ts
reExportUndefined2.ts
@ -388,6 +413,7 @@ unusedImports3.ts
unusedImports4.ts
unusedImports5.ts
unusedInvalidTypeArguments.ts
usedImportNotElidedInJs.ts
varAndFunctionShareName.ts
varArgConstructorMemberParameter.ts
withStatement.ts

2
scripts/parser-tests/typescript/error-codes.js
View File

@ -40,7 +40,7 @@ module.exports = [
"TS1163", // A 'yield' expression is only allowed in a generator body.
"TS1184", // Modifiers cannot appear here.
"TS1191", // An import declaration cannot have modifiers.
"TS1196", // Catch clause variable cannot have a type annotation.
"TS1196", // Catch clause variable type annotation must be 'any' or 'unknown' if specified.
"TS1197", // Catch clause variable cannot have an initializer.
"TS1200", // Line terminator not permitted before arrow.
"TS1312", // '=' can only be used in an object literal property inside a destructuring assignment.