/
error-message.js
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/
error-message.js
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// @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",
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",
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,
);