125         ThrowSyntaxError("A 'declare' modifier cannot be used in an already ambient context.");  in CheckDeclare()
211                     ThrowSyntaxError("'declare' modifier already seen.");  in ParseStatement()
345             ThrowSyntaxError("Only ambient modules can use quoted names");  in ParseTsAmbientExternalModuleDeclaration()
364         ThrowSyntaxError("';' expected");  in ParseTsAmbientExternalModuleDeclaration()
378         ThrowSyntaxError("Identifier expected");  in ParseTsModuleOrNamespaceDelaration()
457         ThrowSyntaxError("Unexpected token");  in ParseTsImportEqualsDeclaration()
465         ThrowSyntaxError("'=' expected");  in ParseTsImportEqualsDeclaration()
470         ThrowSyntaxError("identifier expected");  in ParseTsImportEqualsDeclaration()
499         ThrowSyntaxError("namespace export declaration is only supported in TypeScript '.d.ts'");  in ParseTsNamespaceExportDeclaration()
504         ThrowSyntaxError("'namespace' expected");  in ParseTsNamespaceExportDeclaration()
508         ThrowSyntaxError("identifier expected");  in ParseTsNamespaceExportDeclaration()
526         ThrowSyntaxError("'{' expected.");  in ParseTsModuleBlock()
534         ThrowSyntaxError("Expected a '}'");  in ParseTsModuleBlock()
554 …ThrowSyntaxError("The 'let' declarations can only be declared at the top level or inside a block."…  in ParseLetStatement()
571         ThrowSyntaxError("Unexpected token");  in ParseConstStatement()
575 …ThrowSyntaxError("The 'const' declarations can only be declared at the top level or inside a block…  in ParseConstStatement()
654         ThrowSyntaxError("Lexical 'class' declaration is not allowed in single statement context");  in ParseClassStatement()
691         ThrowSyntaxError("Identifier expected");  in ParseTsTypeAliasDeclaration()
698         ThrowSyntaxError(errMsg.c_str());  in ParseTsTypeAliasDeclaration()
715         ThrowSyntaxError("'=' expected");  in ParseTsTypeAliasDeclaration()
739         ThrowSyntaxError("Identifier expected");  in ParseTsInterfaceDeclaration()
746         ThrowSyntaxError(errMsg.c_str());  in ParseTsInterfaceDeclaration()
782                 ThrowSyntaxError("Identifier expected");  in ParseTsInterfaceDeclaration()
818                 ThrowSyntaxError("',' expected");  in ParseTsInterfaceDeclaration()
855         ThrowSyntaxError("Generators can only be declared at the top level or inside a block.");  in CheckFunctionDeclaration()
858     ThrowSyntaxError(  in CheckFunctionDeclaration()
876             ThrowSyntaxError("Unexpected token");  in ConsumeSemicolon()
905         ThrowSyntaxError(  in ParseDirective()
940         ThrowSyntaxError("Expected a '}'");  in ParseBlockStatement()
969             ThrowSyntaxError("Illegal break statement");  in ParseBreakStatement()
974                 ThrowSyntaxError("Jump target cannot cross function boundary");  in ParseBreakStatement()
976                 ThrowSyntaxError(  in ParseBreakStatement()
992         ThrowSyntaxError("Unexpected token.");  in ParseBreakStatement()
998         ThrowSyntaxError("Undefined label");  in ParseBreakStatement()
1018         ThrowSyntaxError("Jump target cannot cross function boundary");  in ParseContinueStatement()
1023             ThrowSyntaxError("Illegal continue statement");  in ParseContinueStatement()
1026             ThrowSyntaxError(  in ParseContinueStatement()
1051         ThrowSyntaxError("Unexpected token.");  in ParseContinueStatement()
1059         ThrowSyntaxError("Undefined label");  in ParseContinueStatement()
1083         ThrowSyntaxError("Missing 'while' keyword in a 'DoWhileStatement'");  in ParseDoWhileStatement()
1088         ThrowSyntaxError("Missing left parenthesis in a 'DoWhileStatement'");  in ParseDoWhileStatement()
1096         ThrowSyntaxError("Missing right parenthesis in a 'DoWhileStatement'");  in ParseDoWhileStatement()
1152         ThrowSyntaxError("Unexpected token, expected identifier after 'function' keyword");  in ParseFunctionDeclaration()
1233             ThrowSyntaxError(  in CheckOptionalBindingPatternParameter()
1251 …      ThrowSyntaxError("Async functions can only be declared at the top level or inside a block.");  in ParseExpressionStatement()
1287                 ThrowSyntaxError("for-in loop variable declaration may not have an initializer");  in ParseForInOf()
1293                 ThrowSyntaxError("for-of loop variable declaration may not have an initializer");  in ParseForInOf()
1303             ThrowSyntaxError("Unexpected token");  in ParseForInOf()
1307             ThrowSyntaxError("Invalid left-hand side in 'For[In/Of]Statement'");  in ParseForInOf()
1313                 ThrowSyntaxError("Unexpected token, expected ';' in 'ForStatement'.");  in ParseForInOf()
1374         ThrowSyntaxError("Unexpected token");  in ParseForInOf()
1391                 ThrowSyntaxError("Invalid left-hand side in for-in statement");  in ParseForInOf()
1397         ThrowSyntaxError("Invalid left-hand side in 'For[In/Of]Statement'");  in ParseForInOf()
1401         ThrowSyntaxError("Unexpected token, expected ';' in 'ForStatement'.");  in ParseForInOf()
1412             ThrowSyntaxError("Unexpected token, expected ';' in 'ForStatement'.");  in ParseForInOf()
1427         ThrowSyntaxError("Unexpected token");  in ParseForUpdate()
1438             ThrowSyntaxError("Unexpected token, expected ';' in 'ForStatement'.");  in ParseForUpdate()
1471         ThrowSyntaxError("Missing left parenthesis in a 'ForStatement'");  in ParseForStatement()
1493                 ThrowSyntaxError("Unexpected token");  in ParseForStatement()
1531         ThrowSyntaxError("Unexpected token, expected ')' in 'ForStatement'.");  in ParseForStatement()
1562         ThrowSyntaxError("Missing left parenthesis in an 'IfStatement'");  in ParseIfStatement()
1569         ThrowSyntaxError("Missing right parenthesis in an 'IfStatement'");  in ParseIfStatement()
1576         ThrowSyntaxError("The body of an if statement cannot be the empty statement");  in ParseIfStatement()
1603         ThrowSyntaxError("'await' is a reserved identifier in module code", pos.token.Start());  in ParseLabelledStatement()
1607         ThrowSyntaxError("Label already declared", pos.token.Start());  in ParseLabelledStatement()
1633         ThrowSyntaxError("return keyword should be used in function body");  in ParseReturnStatement()
1674                     ThrowSyntaxError(  in ParseSwitchCaseStatement()
1678                     ThrowSyntaxError("Multiple default clauses.");  in ParseSwitchCaseStatement()
1686             ThrowSyntaxError("Unexpected token, expected 'case' or 'default'.");  in ParseSwitchCaseStatement()
1691         ThrowSyntaxError("Unexpected token, expected ':'");  in ParseSwitchCaseStatement()
1717         ThrowSyntaxError("Unexpected token, expected '('");  in ParseSwitchStatement()
1724         ThrowSyntaxError("Unexpected token, expected ')'");  in ParseSwitchStatement()
1731         ThrowSyntaxError("Unexpected token, expected '{'");  in ParseSwitchStatement()
1759             ThrowSyntaxError("Illegal newline after throw");  in ParseThrowStatement()
1763             ThrowSyntaxError("Line break not permitted here");  in ParseThrowStatement()
1790                 ThrowSyntaxError("Binding 'eval' in strict mode is invalid");  in ParseCatchParam()
1793                 ThrowSyntaxError("Binding 'arguments' in strict mode is invalid");  in ParseCatchParam()
1809         ThrowSyntaxError("Unexpected token in catch parameter");  in ParseCatchParam()
1823             ThrowSyntaxError("Catch clause variable cannot have an initializer");  in ParseCatchParam()
1828         ThrowSyntaxError("Unexpected token, expected ')'");  in ParseCatchParam()
1848         ThrowSyntaxError("Unexpected token, expected '{'");  in ParseCatchClause()
1874         ThrowSyntaxError("Unexpected token, expected '{'");  in ParseTryStatement()
1881         ThrowSyntaxError("Missing catch or finally clause");  in ParseTryStatement()
1896             ThrowSyntaxError("Unexpected token, expected '{'");  in ParseTryStatement()
1918                 ThrowSyntaxError("'await' is not permitted as an identifier in module code");  in ValidateDeclaratorId()
1923             ThrowSyntaxError("Binding 'eval' in strict mode is invalid");  in ValidateDeclaratorId()
1926             ThrowSyntaxError("Binding 'arguments' in strict mode is invalid");  in ValidateDeclaratorId()
1929             ThrowSyntaxError("let is disallowed as a lexically bound name");  in ValidateDeclaratorId()
1940             ThrowSyntaxError("Unexpected reserved word");  in ValidateDeclaratorId()
1953         ThrowSyntaxError("for-await-of loop variable declaration may not have an initializer");  in ParseVariableDeclaratorInitializer()
1959         ThrowSyntaxError("Initializers are not allowed in ambient contexts.");  in ParseVariableDeclaratorInitializer()
1984                 ThrowSyntaxError("let is disallowed as a lexically bound name");  in ParseVariableDeclarator()
2007             ThrowSyntaxError("Unexpected token in variable declaration");  in ParseVariableDeclarator()
2032             ThrowSyntaxError("Missing initializer in const declaration");  in ParseVariableDeclarator()
2037             ThrowSyntaxError("Missing initializer in destructuring declaration");  in ParseVariableDeclarator()
2080         ThrowSyntaxError("Declaration name conflicts with built-in global identifier '"  in ParseVariableDeclaration()
2086             ThrowSyntaxError("Variable declaration expected.");  in ParseVariableDeclaration()
2124         ThrowSyntaxError("Unexpected token, expected '('");  in ParseWhileStatement()
2131         ThrowSyntaxError("Unexpected token, expected ')'");  in ParseWhileStatement()
2160             ThrowSyntaxError("Unexpected import type syntax", source->Start());  in AddImportEntryItem()
2195                 ThrowSyntaxError("Unexpected astNode type", it->Start());  in AddImportEntryItem()
2223                 ThrowSyntaxError("Duplicate export name of '" + exportName.Mutf8() + "'",  in AddExportNamedEntryItem()
2237                 ThrowSyntaxError("Duplicate export name of '" + exportName.Mutf8() + "'",  in AddExportNamedEntryItem()
2270 …ThrowSyntaxError("Duplicate export name of '" + exported->Name().Mutf8() + "'", exported->Start());  in AddExportStarEntryItem()
2304 …      ThrowSyntaxError("Duplicate export name of '" + exportName.Mutf8() + "'", declNode->Start());  in AddExportDefaultEntryItem()
2329                         ThrowSyntaxError("Duplicate export name of '" + binding->Name().Mutf8()  in AddExportLocalEntryItem()
2341 … ThrowSyntaxError("A class or function declaration without the default modifier must have a name.",  in AddExportLocalEntryItem()
2353 …        ThrowSyntaxError("Duplicate export name of '" + name->Name().Mutf8() + "'", name->Start());  in AddExportLocalEntryItem()
2369         ThrowSyntaxError("An interface or type alias declaration must have a name.");  in AddTsTypeExportLocalEntryItem()
2388         ThrowSyntaxError("Decorators are not valid here.", decorators.front()->Start());  in ParseExportDefaultDeclaration()
2405             ThrowSyntaxError("Unexpected token, expected 'class'.");  in ParseExportDefaultDeclaration()
2434         ThrowSyntaxError("Unexpected token, expected an identifier.");  in ParseNamedExport()
2476         ThrowSyntaxError("Export declarations are not permitted in a namespace.");  in ParseExportNamedSpecifiers()
2485             ThrowSyntaxError("Unexpected token");  in ParseExportNamedSpecifiers()
2553         ThrowSyntaxError("Decorators are not valid here.", decorators.front()->Start());  in ParseNamedExportDeclaration()
2616                                 ThrowSyntaxError("'declare' modifier already seen.");  in ParseNamedExportDeclaration()
2623                             ThrowSyntaxError("Unexpected token, expected 'class'.");  in ParseNamedExportDeclaration()
2643                 ThrowSyntaxError("Unexpected token");  in ParseNamedExportDeclaration()
2670             ThrowSyntaxError("'import' and 'export' may only appear at the top level");  in ParseExportDeclaration()
2674             ThrowSyntaxError("'import' and 'export' may appear only with 'sourceType: module'");  in ParseExportDeclaration()
2727                 ThrowSyntaxError("Modifiers cannot appear here'");  in ParseExportDeclaration()
2741         ThrowSyntaxError("Unexpected token.");  in ParseNameSpaceImport()
2774         ThrowSyntaxError("Unexpected token");  in ParseNamedImport()
2779             ThrowSyntaxError("Binding 'eval' in strict mode is invalid");  in ParseNamedImport()
2782             ThrowSyntaxError("Binding 'arguments' in strict mode is invalid");  in ParseNamedImport()
2801             ThrowSyntaxError("Unexpected token");  in ParseNamedImportSpecifiers()
2846             ThrowSyntaxError("String literal expected.");  in ParseModuleReference()
2854             ThrowSyntaxError("')' expected.");  in ParseModuleReference()
2881             ThrowSyntaxError("identifier expected");  in ParseImportDefaultSpecifier()
2917             ThrowSyntaxError("Unexpected token.");  in ParseFromClause()
2924         ThrowSyntaxError("Unexpected token.");  in ParseFromClause()
2967             ThrowSyntaxError("'import' and 'export' may only appear at the top level");  in ParseImportDeclaration()
2971             ThrowSyntaxError("'import' and 'export' may appear only with 'sourceType: module'");  in ParseImportDeclaration()
3006             ThrowSyntaxError("'import' and 'export' may appear only with 'sourceType: module'");  in ParseImportDeclaration()
3012             ThrowSyntaxError("'import' and 'export' may appear only with 'sourceType: module'");  in ParseImportDeclaration()