error-message.js

// @flow

import { makeErrorTemplates, ErrorCodes } from "./error";

/* 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 = makeErrorTemplates(
  {
    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",
    AwaitBindingIdentifierInStaticBlock:
      "Can not use 'await' as identifier inside a static block",
    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",
    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",
    ForOfLet: "The left-hand side of a for-of loop may not start with 'let'.",
    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()",
    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.",
    MissingSemicolon: "Missing semicolon",
    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",
    OverrideOnConstructor:
      "'override' modifier cannot appear on a constructor declaration.",
    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",
  },
  /* code */ ErrorCodes.SyntaxError,
);

export const SourceTypeModuleErrorMessages = makeErrorTemplates(
  {
    ImportMetaOutsideModule: `import.meta may appear only with 'sourceType: "module"'`,
    ImportOutsideModule: `'import' and 'export' may appear only with 'sourceType: "module"'`,
  },
  /* code */ ErrorCodes.SourceTypeModuleError,
);