error-message.js

// @flow
/* eslint sort-keys: "error" */

/**
 * @module parser/error-message
 */

// The Errors key follows https://cs.chromium.org/chromium/src/v8/src/common/message-template.h unless it does not exist
export const ErrorMessages = Object.freeze({
  AccessorIsGenerator: "A %0ter cannot be a generator",
  ArgumentsInClass:
    "'arguments' is only allowed in functions and class methods",
  AsyncFunctionInSingleStatementContext:
    "Async functions can only be declared at the top level or inside a block",
  AwaitBindingIdentifier:
    "Can not use 'await' as identifier inside an async function",
  AwaitExpressionFormalParameter:
    "await is not allowed in async function parameters",
  AwaitNotInAsyncContext:
    "'await' is only allowed within async functions and at the top levels of modules",
  AwaitNotInAsyncFunction: "'await' is only allowed within async functions",
  BadGetterArity: "getter must not have any formal parameters",
  BadSetterArity: "setter must have exactly one formal parameter",
  BadSetterRestParameter:
    "setter function argument must not be a rest parameter",
  ConstructorClassField: "Classes may not have a field named 'constructor'",
  ConstructorClassPrivateField:
    "Classes may not have a private field named '#constructor'",
  ConstructorIsAccessor: "Class constructor may not be an accessor",
  ConstructorIsAsync: "Constructor can't be an async function",
  ConstructorIsGenerator: "Constructor can't be a generator",
  DeclarationMissingInitializer: "%0 require an initialization value",
  DecoratorBeforeExport:
    "Decorators must be placed *before* the 'export' keyword. You can set the 'decoratorsBeforeExport' option to false to use the 'export @decorator class {}' syntax",
  DecoratorConstructor:
    "Decorators can't be used with a constructor. Did you mean '@dec class { ... }'?",
  DecoratorExportClass:
    "Using the export keyword between a decorator and a class is not allowed. Please use `export @dec class` instead.",
  DecoratorSemicolon: "Decorators must not be followed by a semicolon",
  DecoratorStaticBlock: "Decorators can't be used with a static block",
  DeletePrivateField: "Deleting a private field is not allowed",
  DestructureNamedImport:
    "ES2015 named imports do not destructure. Use another statement for destructuring after the import.",
  DuplicateConstructor: "Duplicate constructor in the same class",
  DuplicateDefaultExport: "Only one default export allowed per module.",
  DuplicateExport:
    "`%0` has already been exported. Exported identifiers must be unique.",
  DuplicateProto: "Redefinition of __proto__ property",
  DuplicateRegExpFlags: "Duplicate regular expression flag",
  DuplicateStaticBlock: "Duplicate static block in the same class",
  ElementAfterRest: "Rest element must be last element",
  EscapedCharNotAnIdentifier: "Invalid Unicode escape",
  ExportBindingIsString:
    "A string literal cannot be used as an exported binding without `from`.\n- Did you mean `export { '%0' as '%1' } from 'some-module'`?",
  ExportDefaultFromAsIdentifier:
    "'from' is not allowed as an identifier after 'export default'",
  ForInOfLoopInitializer:
    "%0 loop variable declaration may not have an initializer",
  GeneratorInSingleStatementContext:
    "Generators can only be declared at the top level or inside a block",
  IllegalBreakContinue: "Unsyntactic %0",
  IllegalLanguageModeDirective:
    "Illegal 'use strict' directive in function with non-simple parameter list",
  IllegalReturn: "'return' outside of function",
  ImportBindingIsString:
    'A string literal cannot be used as an imported binding.\n- Did you mean `import { "%0" as foo }`?',
  ImportCallArgumentTrailingComma:
    "Trailing comma is disallowed inside import(...) arguments",
  ImportCallArity: "import() requires exactly %0",
  ImportCallNotNewExpression: "Cannot use new with import(...)",
  ImportCallSpreadArgument: "... is not allowed in import()",
  ImportMetaOutsideModule: `import.meta may appear only with 'sourceType: "module"'`,
  ImportOutsideModule: `'import' and 'export' may appear only with 'sourceType: "module"'`,
  InvalidBigIntLiteral: "Invalid BigIntLiteral",
  InvalidCodePoint: "Code point out of bounds",
  InvalidDecimal: "Invalid decimal",
  InvalidDigit: "Expected number in radix %0",
  InvalidEscapeSequence: "Bad character escape sequence",
  InvalidEscapeSequenceTemplate: "Invalid escape sequence in template",
  InvalidEscapedReservedWord: "Escape sequence in keyword %0",
  InvalidIdentifier: "Invalid identifier %0",
  InvalidLhs: "Invalid left-hand side in %0",
  InvalidLhsBinding: "Binding invalid left-hand side in %0",
  InvalidNumber: "Invalid number",
  InvalidOrMissingExponent:
    "Floating-point numbers require a valid exponent after the 'e'",
  InvalidOrUnexpectedToken: "Unexpected character '%0'",
  InvalidParenthesizedAssignment: "Invalid parenthesized assignment pattern",
  InvalidPrivateFieldResolution: "Private name #%0 is not defined",
  InvalidPropertyBindingPattern: "Binding member expression",
  InvalidRecordProperty:
    "Only properties and spread elements are allowed in record definitions",
  InvalidRestAssignmentPattern: "Invalid rest operator's argument",
  LabelRedeclaration: "Label '%0' is already declared",
  LetInLexicalBinding:
    "'let' is not allowed to be used as a name in 'let' or 'const' declarations.",
  LineTerminatorBeforeArrow: "No line break is allowed before '=>'",
  MalformedRegExpFlags: "Invalid regular expression flag",
  MissingClassName: "A class name is required",
  MissingEqInAssignment:
    "Only '=' operator can be used for specifying default value.",
  MissingUnicodeEscape: "Expecting Unicode escape sequence \\uXXXX",
  MixingCoalesceWithLogical:
    "Nullish coalescing operator(??) requires parens when mixing with logical operators",
  ModuleAttributeDifferentFromType:
    "The only accepted module attribute is `type`",
  ModuleAttributeInvalidValue:
    "Only string literals are allowed as module attribute values",
  ModuleAttributesWithDuplicateKeys:
    'Duplicate key "%0" is not allowed in module attributes',
  ModuleExportNameHasLoneSurrogate:
    "An export name cannot include a lone surrogate, found '\\u%0'",
  ModuleExportUndefined: "Export '%0' is not defined",
  MultipleDefaultsInSwitch: "Multiple default clauses",
  NewlineAfterThrow: "Illegal newline after throw",
  NoCatchOrFinally: "Missing catch or finally clause",
  NumberIdentifier: "Identifier directly after number",
  NumericSeparatorInEscapeSequence:
    "Numeric separators are not allowed inside unicode escape sequences or hex escape sequences",
  ObsoleteAwaitStar:
    "await* has been removed from the async functions proposal. Use Promise.all() instead.",
  OptionalChainingNoNew:
    "constructors in/after an Optional Chain are not allowed",
  OptionalChainingNoTemplate:
    "Tagged Template Literals are not allowed in optionalChain",
  ParamDupe: "Argument name clash",
  PatternHasAccessor: "Object pattern can't contain getter or setter",
  PatternHasMethod: "Object pattern can't contain methods",
  PipelineBodyNoArrow:
    'Unexpected arrow "=>" after pipeline body; arrow function in pipeline body must be parenthesized',
  PipelineBodySequenceExpression:
    "Pipeline body may not be a comma-separated sequence expression",
  PipelineHeadSequenceExpression:
    "Pipeline head should not be a comma-separated sequence expression",
  PipelineTopicUnused:
    "Pipeline is in topic style but does not use topic reference",
  PrimaryTopicNotAllowed:
    "Topic reference was used in a lexical context without topic binding",
  PrimaryTopicRequiresSmartPipeline:
    "Primary Topic Reference found but pipelineOperator not passed 'smart' for 'proposal' option.",
  PrivateInExpectedIn:
    "Private names are only allowed in property accesses (`obj.#%0`) or in `in` expressions (`#%0 in obj`)",
  PrivateNameRedeclaration: "Duplicate private name #%0",
  RecordExpressionBarIncorrectEndSyntaxType:
    "Record expressions ending with '|}' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'",
  RecordExpressionBarIncorrectStartSyntaxType:
    "Record expressions starting with '{|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'",
  RecordExpressionHashIncorrectStartSyntaxType:
    "Record expressions starting with '#{' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'",
  RecordNoProto: "'__proto__' is not allowed in Record expressions",
  RestTrailingComma: "Unexpected trailing comma after rest element",
  SloppyFunction:
    "In non-strict mode code, functions can only be declared at top level, inside a block, or as the body of an if statement",
  StaticPrototype: "Classes may not have static property named prototype",
  StrictDelete: "Deleting local variable in strict mode",
  StrictEvalArguments: "Assigning to '%0' in strict mode",
  StrictEvalArgumentsBinding: "Binding '%0' in strict mode",
  StrictFunction:
    "In strict mode code, functions can only be declared at top level or inside a block",
  StrictNumericEscape: "The only valid numeric escape in strict mode is '\\0'",
  StrictOctalLiteral: "Legacy octal literals are not allowed in strict mode",
  StrictWith: "'with' in strict mode",
  SuperNotAllowed:
    "super() is only valid inside a class constructor of a subclass. Maybe a typo in the method name ('constructor') or not extending another class?",
  SuperPrivateField: "Private fields can't be accessed on super",
  TrailingDecorator: "Decorators must be attached to a class element",
  TupleExpressionBarIncorrectEndSyntaxType:
    "Tuple expressions ending with '|]' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'",
  TupleExpressionBarIncorrectStartSyntaxType:
    "Tuple expressions starting with '[|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'",
  TupleExpressionHashIncorrectStartSyntaxType:
    "Tuple expressions starting with '#[' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'",
  UnexpectedArgumentPlaceholder: "Unexpected argument placeholder",
  UnexpectedAwaitAfterPipelineBody:
    'Unexpected "await" after pipeline body; await must have parentheses in minimal proposal',
  UnexpectedDigitAfterHash: "Unexpected digit after hash token",
  UnexpectedImportExport:
    "'import' and 'export' may only appear at the top level",
  UnexpectedKeyword: "Unexpected keyword '%0'",
  UnexpectedLeadingDecorator:
    "Leading decorators must be attached to a class declaration",
  UnexpectedLexicalDeclaration:
    "Lexical declaration cannot appear in a single-statement context",
  UnexpectedNewTarget: "new.target can only be used in functions",
  UnexpectedNumericSeparator:
    "A numeric separator is only allowed between two digits",
  UnexpectedPrivateField:
    "Private names can only be used as the name of a class element (i.e. class C { #p = 42; #m() {} } )\n or a property of member expression (i.e. this.#p).",
  UnexpectedReservedWord: "Unexpected reserved word '%0'",
  UnexpectedSuper: "super is only allowed in object methods and classes",
  UnexpectedToken: "Unexpected token '%0'",
  UnexpectedTokenUnaryExponentiation:
    "Illegal expression. Wrap left hand side or entire exponentiation in parentheses.",
  UnsupportedBind: "Binding should be performed on object property.",
  UnsupportedDecoratorExport:
    "A decorated export must export a class declaration",
  UnsupportedDefaultExport:
    "Only expressions, functions or classes are allowed as the `default` export.",
  UnsupportedImport: "import can only be used in import() or import.meta",
  UnsupportedMetaProperty: "The only valid meta property for %0 is %0.%1",
  UnsupportedParameterDecorator:
    "Decorators cannot be used to decorate parameters",
  UnsupportedPropertyDecorator:
    "Decorators cannot be used to decorate object literal properties",
  UnsupportedSuper:
    "super can only be used with function calls (i.e. super()) or in property accesses (i.e. super.prop or super[prop])",
  UnterminatedComment: "Unterminated comment",
  UnterminatedRegExp: "Unterminated regular expression",
  UnterminatedString: "Unterminated string constant",
  UnterminatedTemplate: "Unterminated template",
  VarRedeclaration: "Identifier '%0' has already been declared",
  YieldBindingIdentifier:
    "Can not use 'yield' as identifier inside a generator",
  YieldInParameter: "Yield expression is not allowed in formal parameters",
  ZeroDigitNumericSeparator:
    "Numeric separator can not be used after leading 0",
});