Introduce parser error codes (#13033)
This commit is contained in:
Sosuke Suzuki
committed by
Nicolò Ribaudo
Nicolò Ribaudo
parent
d0fcbfccdd
commit
0ee98139a6
@@ -25,7 +25,7 @@ import {
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SCOPE_OTHER,
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} from "../../util/scopeflags";
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import type { ExpressionErrors } from "../../parser/util";
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import { Errors } from "../../parser/error";
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import { Errors, makeErrorTemplates, ErrorCodes } from "../../parser/error";
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const reservedTypes = new Set([
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"_",
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@@ -48,91 +48,95 @@ const reservedTypes = new Set([
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/* eslint sort-keys: "error" */
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// The Errors key follows https://github.com/facebook/flow/blob/master/src/parser/parse_error.ml unless it does not exist
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const FlowErrors = Object.freeze({
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AmbiguousConditionalArrow:
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"Ambiguous expression: wrap the arrow functions in parentheses to disambiguate.",
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AmbiguousDeclareModuleKind:
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"Found both `declare module.exports` and `declare export` in the same module. Modules can only have 1 since they are either an ES module or they are a CommonJS module",
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AssignReservedType: "Cannot overwrite reserved type %0",
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DeclareClassElement:
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"The `declare` modifier can only appear on class fields.",
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DeclareClassFieldInitializer:
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"Initializers are not allowed in fields with the `declare` modifier.",
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DuplicateDeclareModuleExports: "Duplicate `declare module.exports` statement",
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EnumBooleanMemberNotInitialized:
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"Boolean enum members need to be initialized. Use either `%0 = true,` or `%0 = false,` in enum `%1`.",
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EnumDuplicateMemberName:
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"Enum member names need to be unique, but the name `%0` has already been used before in enum `%1`.",
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EnumInconsistentMemberValues:
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"Enum `%0` has inconsistent member initializers. Either use no initializers, or consistently use literals (either booleans, numbers, or strings) for all member initializers.",
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EnumInvalidExplicitType:
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"Enum type `%1` is not valid. Use one of `boolean`, `number`, `string`, or `symbol` in enum `%0`.",
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EnumInvalidExplicitTypeUnknownSupplied:
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"Supplied enum type is not valid. Use one of `boolean`, `number`, `string`, or `symbol` in enum `%0`.",
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EnumInvalidMemberInitializerPrimaryType:
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"Enum `%0` has type `%2`, so the initializer of `%1` needs to be a %2 literal.",
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EnumInvalidMemberInitializerSymbolType:
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"Symbol enum members cannot be initialized. Use `%1,` in enum `%0`.",
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EnumInvalidMemberInitializerUnknownType:
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"The enum member initializer for `%1` needs to be a literal (either a boolean, number, or string) in enum `%0`.",
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EnumInvalidMemberName:
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"Enum member names cannot start with lowercase 'a' through 'z'. Instead of using `%0`, consider using `%1`, in enum `%2`.",
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EnumNumberMemberNotInitialized:
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"Number enum members need to be initialized, e.g. `%1 = 1` in enum `%0`.",
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EnumStringMemberInconsistentlyInitailized:
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"String enum members need to consistently either all use initializers, or use no initializers, in enum `%0`.",
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GetterMayNotHaveThisParam: "A getter cannot have a `this` parameter.",
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ImportTypeShorthandOnlyInPureImport:
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"The `type` and `typeof` keywords on named imports can only be used on regular `import` statements. It cannot be used with `import type` or `import typeof` statements",
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InexactInsideExact:
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"Explicit inexact syntax cannot appear inside an explicit exact object type",
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InexactInsideNonObject:
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"Explicit inexact syntax cannot appear in class or interface definitions",
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InexactVariance: "Explicit inexact syntax cannot have variance",
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InvalidNonTypeImportInDeclareModule:
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"Imports within a `declare module` body must always be `import type` or `import typeof`",
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MissingTypeParamDefault:
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"Type parameter declaration needs a default, since a preceding type parameter declaration has a default.",
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NestedDeclareModule:
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"`declare module` cannot be used inside another `declare module`",
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NestedFlowComment: "Cannot have a flow comment inside another flow comment",
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OptionalBindingPattern:
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"A binding pattern parameter cannot be optional in an implementation signature.",
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SetterMayNotHaveThisParam: "A setter cannot have a `this` parameter.",
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SpreadVariance: "Spread properties cannot have variance",
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ThisParamAnnotationRequired:
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"A type annotation is required for the `this` parameter.",
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ThisParamBannedInConstructor:
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"Constructors cannot have a `this` parameter; constructors don't bind `this` like other functions.",
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ThisParamMayNotBeOptional: "The `this` parameter cannot be optional.",
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ThisParamMustBeFirst:
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"The `this` parameter must be the first function parameter.",
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ThisParamNoDefault: "The `this` parameter may not have a default value.",
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TypeBeforeInitializer:
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"Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`",
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TypeCastInPattern:
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"The type cast expression is expected to be wrapped with parenthesis",
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UnexpectedExplicitInexactInObject:
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"Explicit inexact syntax must appear at the end of an inexact object",
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UnexpectedReservedType: "Unexpected reserved type %0",
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UnexpectedReservedUnderscore:
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"`_` is only allowed as a type argument to call or new",
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UnexpectedSpaceBetweenModuloChecks:
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"Spaces between `%` and `checks` are not allowed here.",
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UnexpectedSpreadType:
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"Spread operator cannot appear in class or interface definitions",
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UnexpectedSubtractionOperand:
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'Unexpected token, expected "number" or "bigint"',
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UnexpectedTokenAfterTypeParameter:
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"Expected an arrow function after this type parameter declaration",
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UnexpectedTypeParameterBeforeAsyncArrowFunction:
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"Type parameters must come after the async keyword, e.g. instead of `<T> async () => {}`, use `async <T>() => {}`",
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UnsupportedDeclareExportKind:
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"`declare export %0` is not supported. Use `%1` instead",
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UnsupportedStatementInDeclareModule:
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"Only declares and type imports are allowed inside declare module",
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UnterminatedFlowComment: "Unterminated flow-comment",
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});
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const FlowErrors = makeErrorTemplates(
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{
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AmbiguousConditionalArrow:
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"Ambiguous expression: wrap the arrow functions in parentheses to disambiguate.",
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AmbiguousDeclareModuleKind:
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"Found both `declare module.exports` and `declare export` in the same module. Modules can only have 1 since they are either an ES module or they are a CommonJS module",
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AssignReservedType: "Cannot overwrite reserved type %0",
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DeclareClassElement:
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"The `declare` modifier can only appear on class fields.",
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DeclareClassFieldInitializer:
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"Initializers are not allowed in fields with the `declare` modifier.",
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DuplicateDeclareModuleExports:
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"Duplicate `declare module.exports` statement",
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EnumBooleanMemberNotInitialized:
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"Boolean enum members need to be initialized. Use either `%0 = true,` or `%0 = false,` in enum `%1`.",
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EnumDuplicateMemberName:
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"Enum member names need to be unique, but the name `%0` has already been used before in enum `%1`.",
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EnumInconsistentMemberValues:
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"Enum `%0` has inconsistent member initializers. Either use no initializers, or consistently use literals (either booleans, numbers, or strings) for all member initializers.",
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EnumInvalidExplicitType:
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"Enum type `%1` is not valid. Use one of `boolean`, `number`, `string`, or `symbol` in enum `%0`.",
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EnumInvalidExplicitTypeUnknownSupplied:
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"Supplied enum type is not valid. Use one of `boolean`, `number`, `string`, or `symbol` in enum `%0`.",
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EnumInvalidMemberInitializerPrimaryType:
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"Enum `%0` has type `%2`, so the initializer of `%1` needs to be a %2 literal.",
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EnumInvalidMemberInitializerSymbolType:
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"Symbol enum members cannot be initialized. Use `%1,` in enum `%0`.",
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EnumInvalidMemberInitializerUnknownType:
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"The enum member initializer for `%1` needs to be a literal (either a boolean, number, or string) in enum `%0`.",
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EnumInvalidMemberName:
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"Enum member names cannot start with lowercase 'a' through 'z'. Instead of using `%0`, consider using `%1`, in enum `%2`.",
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EnumNumberMemberNotInitialized:
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"Number enum members need to be initialized, e.g. `%1 = 1` in enum `%0`.",
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EnumStringMemberInconsistentlyInitailized:
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"String enum members need to consistently either all use initializers, or use no initializers, in enum `%0`.",
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GetterMayNotHaveThisParam: "A getter cannot have a `this` parameter.",
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ImportTypeShorthandOnlyInPureImport:
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"The `type` and `typeof` keywords on named imports can only be used on regular `import` statements. It cannot be used with `import type` or `import typeof` statements",
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InexactInsideExact:
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"Explicit inexact syntax cannot appear inside an explicit exact object type",
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InexactInsideNonObject:
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"Explicit inexact syntax cannot appear in class or interface definitions",
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InexactVariance: "Explicit inexact syntax cannot have variance",
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InvalidNonTypeImportInDeclareModule:
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"Imports within a `declare module` body must always be `import type` or `import typeof`",
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MissingTypeParamDefault:
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"Type parameter declaration needs a default, since a preceding type parameter declaration has a default.",
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NestedDeclareModule:
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"`declare module` cannot be used inside another `declare module`",
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NestedFlowComment: "Cannot have a flow comment inside another flow comment",
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OptionalBindingPattern:
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"A binding pattern parameter cannot be optional in an implementation signature.",
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SetterMayNotHaveThisParam: "A setter cannot have a `this` parameter.",
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SpreadVariance: "Spread properties cannot have variance",
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ThisParamAnnotationRequired:
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"A type annotation is required for the `this` parameter.",
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ThisParamBannedInConstructor:
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"Constructors cannot have a `this` parameter; constructors don't bind `this` like other functions.",
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ThisParamMayNotBeOptional: "The `this` parameter cannot be optional.",
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ThisParamMustBeFirst:
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"The `this` parameter must be the first function parameter.",
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ThisParamNoDefault: "The `this` parameter may not have a default value.",
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TypeBeforeInitializer:
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"Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`",
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TypeCastInPattern:
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"The type cast expression is expected to be wrapped with parenthesis",
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UnexpectedExplicitInexactInObject:
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"Explicit inexact syntax must appear at the end of an inexact object",
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UnexpectedReservedType: "Unexpected reserved type %0",
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UnexpectedReservedUnderscore:
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"`_` is only allowed as a type argument to call or new",
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UnexpectedSpaceBetweenModuloChecks:
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"Spaces between `%` and `checks` are not allowed here.",
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UnexpectedSpreadType:
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"Spread operator cannot appear in class or interface definitions",
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UnexpectedSubtractionOperand:
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'Unexpected token, expected "number" or "bigint"',
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UnexpectedTokenAfterTypeParameter:
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"Expected an arrow function after this type parameter declaration",
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UnexpectedTypeParameterBeforeAsyncArrowFunction:
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"Type parameters must come after the async keyword, e.g. instead of `<T> async () => {}`, use `async <T>() => {}`",
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UnsupportedDeclareExportKind:
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"`declare export %0` is not supported. Use `%1` instead",
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UnsupportedStatementInDeclareModule:
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"Only declares and type imports are allowed inside declare module",
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UnterminatedFlowComment: "Unterminated flow-comment",
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},
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/* code */ ErrorCodes.SyntaxError,
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);
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/* eslint-disable sort-keys */
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function isEsModuleType(bodyElement: N.Node): boolean {
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@@ -14,25 +14,28 @@ import * as N from "../../types";
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import { isIdentifierChar, isIdentifierStart } from "../../util/identifier";
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import type { Position } from "../../util/location";
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import { isNewLine } from "../../util/whitespace";
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import { Errors } from "../../parser/error";
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import { Errors, makeErrorTemplates, ErrorCodes } from "../../parser/error";
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const HEX_NUMBER = /^[\da-fA-F]+$/;
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const DECIMAL_NUMBER = /^\d+$/;
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/* eslint sort-keys: "error" */
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const JsxErrors = Object.freeze({
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AttributeIsEmpty:
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"JSX attributes must only be assigned a non-empty expression",
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MissingClosingTagElement: "Expected corresponding JSX closing tag for <%0>",
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MissingClosingTagFragment: "Expected corresponding JSX closing tag for <>",
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UnexpectedSequenceExpression:
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"Sequence expressions cannot be directly nested inside JSX. Did you mean to wrap it in parentheses (...)?",
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UnsupportedJsxValue:
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"JSX value should be either an expression or a quoted JSX text",
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UnterminatedJsxContent: "Unterminated JSX contents",
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UnwrappedAdjacentJSXElements:
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"Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...</>?",
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});
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const JsxErrors = makeErrorTemplates(
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{
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AttributeIsEmpty:
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"JSX attributes must only be assigned a non-empty expression",
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MissingClosingTagElement: "Expected corresponding JSX closing tag for <%0>",
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MissingClosingTagFragment: "Expected corresponding JSX closing tag for <>",
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UnexpectedSequenceExpression:
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"Sequence expressions cannot be directly nested inside JSX. Did you mean to wrap it in parentheses (...)?",
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UnsupportedJsxValue:
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"JSX value should be either an expression or a quoted JSX text",
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UnterminatedJsxContent: "Unterminated JSX contents",
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UnwrappedAdjacentJSXElements:
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"Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...</>?",
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},
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/* code */ ErrorCodes.SyntaxError,
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);
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/* eslint-disable sort-keys */
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// Be aware that this file is always executed and not only when the plugin is enabled.
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@@ -133,10 +136,11 @@ export default (superClass: Class<Parser>): Class<Parser> =>
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const htmlEntity =
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ch === charCodes.rightCurlyBrace ? "}" : ">";
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const char = this.input[this.state.pos];
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this.raise(
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this.state.pos,
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`Unexpected token \`${char}\`. Did you mean \`${htmlEntity}\` or \`{'${char}'}\`?`,
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);
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this.raise(this.state.pos, {
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code: ErrorCodes.SyntaxError,
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reasonCode: "UnexpectedToken",
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template: `Unexpected token \`${char}\`. Did you mean \`${htmlEntity}\` or \`{'${char}'}\`?`,
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});
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}
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/* falls through */
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@@ -5,6 +5,7 @@ import * as charCodes from "charcodes";
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import { types as tt, TokenType } from "../tokenizer/types";
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import type Parser from "../parser";
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import * as N from "../types";
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import { makeErrorTemplates, ErrorCodes } from "../parser/error";
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tt.placeholder = new TokenType("%%", { startsExpr: true });
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@@ -47,6 +48,13 @@ type NodeOf<T: PlaceholderTypes> = $Switch<
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// the substituted nodes.
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type MaybePlaceholder<T: PlaceholderTypes> = NodeOf<T>; // | Placeholder<T>
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const PlaceHolderErrors = makeErrorTemplates(
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{
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ClassNameIsRequired: "A class name is required",
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},
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/* code */ ErrorCodes.SyntaxError,
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);
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export default (superClass: Class<Parser>): Class<Parser> =>
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class extends superClass {
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parsePlaceholder<T: PlaceholderTypes>(
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@@ -240,7 +248,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
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node.body = this.finishPlaceholder(placeholder, "ClassBody");
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return this.finishNode(node, type);
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} else {
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this.unexpected(null, "A class name is required");
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this.unexpected(null, PlaceHolderErrors.ClassNameIsRequired);
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}
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} else {
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this.parseClassId(node, isStatement, optionalId);
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@@ -29,7 +29,12 @@ import TypeScriptScopeHandler from "./scope";
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import * as charCodes from "charcodes";
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import type { ExpressionErrors } from "../../parser/util";
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import { PARAM } from "../../util/production-parameter";
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import { Errors } from "../../parser/error";
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import {
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Errors,
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makeErrorTemplates,
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type ErrorTemplate,
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ErrorCodes,
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} from "../../parser/error";
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type TsModifier =
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| "readonly"
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@@ -60,67 +65,75 @@ type ParsingContext =
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| "TypeParametersOrArguments";
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/* eslint sort-keys: "error" */
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const TSErrors = Object.freeze({
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AbstractMethodHasImplementation:
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"Method '%0' cannot have an implementation because it is marked abstract.",
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ClassMethodHasDeclare: "Class methods cannot have the 'declare' modifier",
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ClassMethodHasReadonly: "Class methods cannot have the 'readonly' modifier",
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ConstructorHasTypeParameters:
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"Type parameters cannot appear on a constructor declaration.",
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const TSErrors = makeErrorTemplates(
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{
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AbstractMethodHasImplementation:
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"Method '%0' cannot have an implementation because it is marked abstract.",
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ClassMethodHasDeclare: "Class methods cannot have the 'declare' modifier",
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ClassMethodHasReadonly: "Class methods cannot have the 'readonly' modifier",
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ConstructorHasTypeParameters:
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"Type parameters cannot appear on a constructor declaration.",
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DeclareAccessor: "'declare' is not allowed in %0ters.",
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DeclareClassFieldHasInitializer:
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"Initializers are not allowed in ambient contexts.",
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DeclareFunctionHasImplementation:
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"An implementation cannot be declared in ambient contexts.",
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DuplicateAccessibilityModifier: "Accessibility modifier already seen.",
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DuplicateModifier: "Duplicate modifier: '%0'",
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EmptyHeritageClauseType: "'%0' list cannot be empty.",
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EmptyTypeArguments: "Type argument list cannot be empty.",
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EmptyTypeParameters: "Type parameter list cannot be empty.",
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ExpectedAmbientAfterExportDeclare:
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"'export declare' must be followed by an ambient declaration.",
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ImportAliasHasImportType: "An import alias can not use 'import type'",
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IndexSignatureHasAbstract:
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"Index signatures cannot have the 'abstract' modifier",
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IndexSignatureHasAccessibility:
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"Index signatures cannot have an accessibility modifier ('%0')",
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IndexSignatureHasDeclare:
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"Index signatures cannot have the 'declare' modifier",
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IndexSignatureHasStatic: "Index signatures cannot have the 'static' modifier",
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InvalidModifierOnTypeMember: "'%0' modifier cannot appear on a type member.",
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InvalidTupleMemberLabel:
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"Tuple members must be labeled with a simple identifier.",
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MixedLabeledAndUnlabeledElements:
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"Tuple members must all have names or all not have names.",
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NonAbstractClassHasAbstractMethod:
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"Abstract methods can only appear within an abstract class.",
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NonClassMethodPropertyHasAbstractModifer:
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"'abstract' modifier can only appear on a class, method, or property declaration.",
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OptionalTypeBeforeRequired:
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"A required element cannot follow an optional element.",
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PatternIsOptional:
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"A binding pattern parameter cannot be optional in an implementation signature.",
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PrivateElementHasAbstract:
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"Private elements cannot have the 'abstract' modifier.",
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PrivateElementHasAccessibility:
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"Private elements cannot have an accessibility modifier ('%0')",
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ReadonlyForMethodSignature:
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"'readonly' modifier can only appear on a property declaration or index signature.",
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TypeAnnotationAfterAssign:
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"Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`",
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UnexpectedParameterModifier:
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"A parameter property is only allowed in a constructor implementation.",
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UnexpectedReadonly:
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"'readonly' type modifier is only permitted on array and tuple literal types.",
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UnexpectedTypeAnnotation: "Did not expect a type annotation here.",
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UnexpectedTypeCastInParameter: "Unexpected type cast in parameter position.",
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UnsupportedImportTypeArgument:
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"Argument in a type import must be a string literal",
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UnsupportedParameterPropertyKind:
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"A parameter property may not be declared using a binding pattern.",
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UnsupportedSignatureParameterKind:
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"Name in a signature must be an Identifier, ObjectPattern or ArrayPattern, instead got %0",
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});
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DeclareClassFieldHasInitializer:
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"Initializers are not allowed in ambient contexts.",
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DeclareFunctionHasImplementation:
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"An implementation cannot be declared in ambient contexts.",
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DuplicateAccessibilityModifier: "Accessibility modifier already seen.",
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DuplicateModifier: "Duplicate modifier: '%0'",
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EmptyHeritageClauseType: "'%0' list cannot be empty.",
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EmptyTypeArguments: "Type argument list cannot be empty.",
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EmptyTypeParameters: "Type parameter list cannot be empty.",
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ExpectedAmbientAfterExportDeclare:
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"'export declare' must be followed by an ambient declaration.",
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ImportAliasHasImportType: "An import alias can not use 'import type'",
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IndexSignatureHasAbstract:
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"Index signatures cannot have the 'abstract' modifier",
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IndexSignatureHasAccessibility:
|
||||
"Index signatures cannot have an accessibility modifier ('%0')",
|
||||
IndexSignatureHasDeclare:
|
||||
"Index signatures cannot have the 'declare' modifier",
|
||||
IndexSignatureHasStatic:
|
||||
"Index signatures cannot have the 'static' modifier",
|
||||
InvalidModifierOnTypeMember:
|
||||
"'%0' modifier cannot appear on a type member.",
|
||||
InvalidTupleMemberLabel:
|
||||
"Tuple members must be labeled with a simple identifier.",
|
||||
MixedLabeledAndUnlabeledElements:
|
||||
"Tuple members must all have names or all not have names.",
|
||||
NonAbstractClassHasAbstractMethod:
|
||||
"Abstract methods can only appear within an abstract class.",
|
||||
NonClassMethodPropertyHasAbstractModifer:
|
||||
"'abstract' modifier can only appear on a class, method, or property declaration.",
|
||||
OptionalTypeBeforeRequired:
|
||||
"A required element cannot follow an optional element.",
|
||||
PatternIsOptional:
|
||||
"A binding pattern parameter cannot be optional in an implementation signature.",
|
||||
PrivateElementHasAbstract:
|
||||
"Private elements cannot have the 'abstract' modifier.",
|
||||
PrivateElementHasAccessibility:
|
||||
"Private elements cannot have an accessibility modifier ('%0')",
|
||||
ReadonlyForMethodSignature:
|
||||
"'readonly' modifier can only appear on a property declaration or index signature.",
|
||||
TypeAnnotationAfterAssign:
|
||||
"Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`",
|
||||
TypeImportCannotSpecifyDefaultAndNamed:
|
||||
"A type-only import can specify a default import or named bindings, but not both.",
|
||||
UnexpectedParameterModifier:
|
||||
"A parameter property is only allowed in a constructor implementation.",
|
||||
UnexpectedReadonly:
|
||||
"'readonly' type modifier is only permitted on array and tuple literal types.",
|
||||
UnexpectedTypeAnnotation: "Did not expect a type annotation here.",
|
||||
UnexpectedTypeCastInParameter:
|
||||
"Unexpected type cast in parameter position.",
|
||||
UnsupportedImportTypeArgument:
|
||||
"Argument in a type import must be a string literal",
|
||||
UnsupportedParameterPropertyKind:
|
||||
"A parameter property may not be declared using a binding pattern.",
|
||||
UnsupportedSignatureParameterKind:
|
||||
"Name in a signature must be an Identifier, ObjectPattern or ArrayPattern, instead got %0",
|
||||
},
|
||||
/* code */ ErrorCodes.SyntaxError,
|
||||
);
|
||||
/* eslint-disable sort-keys */
|
||||
|
||||
// Doesn't handle "void" or "null" because those are keywords, not identifiers.
|
||||
@@ -217,7 +230,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
|
||||
},
|
||||
allowedModifiers: TsModifier[],
|
||||
disallowedModifiers?: TsModifier[],
|
||||
errorTemplate?: string,
|
||||
errorTemplate?: ErrorTemplate,
|
||||
): void {
|
||||
for (;;) {
|
||||
const startPos = this.state.start;
|
||||
@@ -2098,7 +2111,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
|
||||
) {
|
||||
this.raise(
|
||||
importNode.start,
|
||||
"A type-only import can specify a default import or named bindings, but not both.",
|
||||
TSErrors.TypeImportCannotSpecifyDefaultAndNamed,
|
||||
);
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user