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function nonNull(x) {
if (x == null) {
throw new Error(`Unexpected ${x} value.`);
}
return x;
}
function assert(x) {
if (!x) {
throw new Error("Assert fail");
}
}
const TSErrors = (0, _parseError.ParseErrorEnum)`typescript`({
AbstractMethodHasImplementation: ({
methodName
}) => `Method '${methodName}' cannot have an implementation because it is marked abstract.`,
AbstractPropertyHasInitializer: ({
propertyName
}) => `Property '${propertyName}' cannot have an initializer because it is marked abstract.`,
AccesorCannotDeclareThisParameter: "'get' and 'set' accessors cannot declare 'this' parameters.",
AccesorCannotHaveTypeParameters: "An accessor cannot have type parameters.",
AccessorCannotBeOptional: "An 'accessor' property cannot be declared optional.",
ClassMethodHasDeclare: "Class methods cannot have the 'declare' modifier.",
ClassMethodHasReadonly: "Class methods cannot have the 'readonly' modifier.",
ConstInitiailizerMustBeStringOrNumericLiteralOrLiteralEnumReference: "A 'const' initializer in an ambient context must be a string or numeric literal or literal enum reference.",
ConstructorHasTypeParameters: "Type parameters cannot appear on a constructor declaration.",
DeclareAccessor: ({
kind
}) => `'declare' is not allowed in ${kind}ters.`,
DeclareClassFieldHasInitializer: "Initializers are not allowed in ambient contexts.",
DeclareFunctionHasImplementation: "An implementation cannot be declared in ambient contexts.",
DuplicateAccessibilityModifier: ({
modifier
}) => `Accessibility modifier already seen.`,
DuplicateModifier: ({
modifier
}) => `Duplicate modifier: '${modifier}'.`,
EmptyHeritageClauseType: ({
token
}) => `'${token}' list cannot be empty.`,
EmptyTypeArguments: "Type argument list cannot be empty.",
EmptyTypeParameters: "Type parameter list cannot be empty.",
ExpectedAmbientAfterExportDeclare: "'export declare' must be followed by an ambient declaration.",
ImportAliasHasImportType: "An import alias can not use 'import type'.",
ImportReflectionHasImportType: "An `import module` declaration can not use `type` modifier",
IncompatibleModifiers: ({
modifiers
}) => `'${modifiers[0]}' modifier cannot be used with '${modifiers[1]}' modifier.`,
IndexSignatureHasAbstract: "Index signatures cannot have the 'abstract' modifier.",
IndexSignatureHasAccessibility: ({
modifier
}) => `Index signatures cannot have an accessibility modifier ('${modifier}').`,
IndexSignatureHasDeclare: "Index signatures cannot have the 'declare' modifier.",
IndexSignatureHasOverride: "'override' modifier cannot appear on an index signature.",
IndexSignatureHasStatic: "Index signatures cannot have the 'static' modifier.",
InitializerNotAllowedInAmbientContext: "Initializers are not allowed in ambient contexts.",
InvalidModifierOnTypeMember: ({
modifier
}) => `'${modifier}' modifier cannot appear on a type member.`,
InvalidModifierOnTypeParameter: ({
modifier
}) => `'${modifier}' modifier cannot appear on a type parameter.`,
InvalidModifierOnTypeParameterPositions: ({
modifier
}) => `'${modifier}' modifier can only appear on a type parameter of a class, interface or type alias.`,
InvalidModifiersOrder: ({
orderedModifiers
}) => `'${orderedModifiers[0]}' modifier must precede '${orderedModifiers[1]}' modifier.`,
InvalidPropertyAccessAfterInstantiationExpression: "Invalid property access after an instantiation expression. " + "You can either wrap the instantiation expression in parentheses, or delete the type arguments.",
InvalidTupleMemberLabel: "Tuple members must be labeled with a simple identifier.",
MissingInterfaceName: "'interface' declarations must be followed by an identifier.",
MixedLabeledAndUnlabeledElements: "Tuple members must all have names or all not have names.",
NonAbstractClassHasAbstractMethod: "Abstract methods can only appear within an abstract class.",
NonClassMethodPropertyHasAbstractModifer: "'abstract' modifier can only appear on a class, method, or property declaration.",
OptionalTypeBeforeRequired: "A required element cannot follow an optional element.",
OverrideNotInSubClass: "This member cannot have an 'override' modifier because its containing class does not extend another class.",
PatternIsOptional: "A binding pattern parameter cannot be optional in an implementation signature.",
PrivateElementHasAbstract: "Private elements cannot have the 'abstract' modifier.",
PrivateElementHasAccessibility: ({
modifier
}) => `Private elements cannot have an accessibility modifier ('${modifier}').`,
ReadonlyForMethodSignature: "'readonly' modifier can only appear on a property declaration or index signature.",
ReservedArrowTypeParam: "This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `() => ...`.",
ReservedTypeAssertion: "This syntax is reserved in files with the .mts or .cts extension. Use an `as` expression instead.",
SetAccesorCannotHaveOptionalParameter: "A 'set' accessor cannot have an optional parameter.",
SetAccesorCannotHaveRestParameter: "A 'set' accessor cannot have rest parameter.",
SetAccesorCannotHaveReturnType: "A 'set' accessor cannot have a return type annotation.",
SingleTypeParameterWithoutTrailingComma: ({
typeParameterName
}) => `Single type parameter ${typeParameterName} should have a trailing comma. Example usage: <${typeParameterName},>.`,
StaticBlockCannotHaveModifier: "Static class blocks cannot have any modifier.",
TupleOptionalAfterType: "A labeled tuple optional element must be declared using a question mark after the name and before the colon (`name?: type`), rather than after the type (`name: type?`).",
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.",
TypeModifierIsUsedInTypeExports: "The 'type' modifier cannot be used on a named export when 'export type' is used on its export statement.",
TypeModifierIsUsedInTypeImports: "The 'type' modifier cannot be used on a named import when 'import type' is used on its import statement.",
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: ({
type
}) => `Name in a signature must be an Identifier, ObjectPattern or ArrayPattern, instead got ${type}.`
});
function keywordTypeFromName(value) {
switch (value) {
case "any":
return "TSAnyKeyword";
case "boolean":
return "TSBooleanKeyword";
case "bigint":
return "TSBigIntKeyword";
case "never":
return "TSNeverKeyword";
case "number":
return "TSNumberKeyword";
case "object":
return "TSObjectKeyword";
case "string":
return "TSStringKeyword";
case "symbol":
return "TSSymbolKeyword";
case "undefined":
return "TSUndefinedKeyword";
case "unknown":
return "TSUnknownKeyword";
default:
return undefined;
}
}
function tsIsAccessModifier(modifier) {
return modifier === "private" || modifier === "public" || modifier === "protected";
}
function tsIsVarianceAnnotations(modifier) {
return modifier === "in" || modifier === "out";
}
var _default = superClass => class TypeScriptParserMixin extends superClass {
constructor(...args) {
super(...args);
this.tsParseInOutModifiers = this.tsParseModifiers.bind(this, {
allowedModifiers: ["in", "out"],
disallowedModifiers: ["const", "public", "private", "protected", "readonly", "declare", "abstract", "override"],
errorTemplate: TSErrors.InvalidModifierOnTypeParameter
});
this.tsParseConstModifier = this.tsParseModifiers.bind(this, {
allowedModifiers: ["const"],
disallowedModifiers: ["in", "out"],
errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions
});
this.tsParseInOutConstModifiers = this.tsParseModifiers.bind(this, {
allowedModifiers: ["in", "out", "const"],
disallowedModifiers: ["public", "private", "protected", "readonly", "declare", "abstract", "override"],
errorTemplate: TSErrors.InvalidModifierOnTypeParameter
});
}
getScopeHandler() {
return _scope.default;
}
tsIsIdentifier() {
return (0, _types.tokenIsIdentifier)(this.state.type);
}
tsTokenCanFollowModifier() {
return (this.match(0) || this.match(5) || this.match(55) || this.match(21) || this.match(136) || this.isLiteralPropertyName()) && !this.hasPrecedingLineBreak();
}
tsNextTokenCanFollowModifier() {
this.next();
return this.tsTokenCanFollowModifier();
}
tsParseModifier(allowedModifiers, stopOnStartOfClassStaticBlock) {
if (!(0, _types.tokenIsIdentifier)(this.state.type) && this.state.type !== 58 && this.state.type !== 75) {
return undefined;
}
const modifier = this.state.value;
if (allowedModifiers.indexOf(modifier) !== -1) {
if (stopOnStartOfClassStaticBlock && this.tsIsStartOfStaticBlocks()) {
return undefined;
}
if (this.tsTryParse(this.tsNextTokenCanFollowModifier.bind(this))) {
return modifier;
}
}
return undefined;
}
tsParseModifiers({
allowedModifiers,
disallowedModifiers,
stopOnStartOfClassStaticBlock,
errorTemplate = TSErrors.InvalidModifierOnTypeMember
}, modified) {
const enforceOrder = (loc, modifier, before, after) => {
if (modifier === before && modified[after]) {
this.raise(TSErrors.InvalidModifiersOrder, {
at: loc,
orderedModifiers: [before, after]
});
}
};
const incompatible = (loc, modifier, mod1, mod2) => {
if (modified[mod1] && modifier === mod2 || modified[mod2] && modifier === mod1) {
this.raise(TSErrors.IncompatibleModifiers, {
at: loc,
modifiers: [mod1, mod2]
});
}
};
for (;;) {
const {
startLoc
} = this.state;
const modifier = this.tsParseModifier(allowedModifiers.concat(disallowedModifiers != null ? disallowedModifiers : []), stopOnStartOfClassStaticBlock);
if (!modifier) break;
if (tsIsAccessModifier(modifier)) {
if (modified.accessibility) {
this.raise(TSErrors.DuplicateAccessibilityModifier, {
at: startLoc,
modifier
});
} else {
enforceOrder(startLoc, modifier, modifier, "override");
enforceOrder(startLoc, modifier, modifier, "static");
enforceOrder(startLoc, modifier, modifier, "readonly");
modified.accessibility = modifier;
}
} else if (tsIsVarianceAnnotations(modifier)) {
if (modified[modifier]) {
this.raise(TSErrors.DuplicateModifier, {
at: startLoc,
modifier
});
}
modified[modifier] = true;
enforceOrder(startLoc, modifier, "in", "out");
} else {
if (Object.hasOwnProperty.call(modified, modifier)) {
this.raise(TSErrors.DuplicateModifier, {
at: startLoc,
modifier
});
} else {
enforceOrder(startLoc, modifier, "static", "readonly");
enforceOrder(startLoc, modifier, "static", "override");
enforceOrder(startLoc, modifier, "override", "readonly");
enforceOrder(startLoc, modifier, "abstract", "override");
incompatible(startLoc, modifier, "declare", "override");
incompatible(startLoc, modifier, "static", "abstract");
}
modified[modifier] = true;
}
if (disallowedModifiers != null && disallowedModifiers.includes(modifier)) {
this.raise(errorTemplate, {
at: startLoc,
modifier
});
}
}
}
tsIsListTerminator(kind) {
switch (kind) {
case "EnumMembers":
case "TypeMembers":
return this.match(8);
case "HeritageClauseElement":
return this.match(5);
case "TupleElementTypes":
return this.match(3);
case "TypeParametersOrArguments":
return this.match(48);
}
}
tsParseList(kind, parseElement) {
const result = [];
while (!this.tsIsListTerminator(kind)) {
result.push(parseElement());
}
return result;
}
tsParseDelimitedList(kind, parseElement, refTrailingCommaPos) {
return nonNull(this.tsParseDelimitedListWorker(kind, parseElement, true, refTrailingCommaPos));
}
tsParseDelimitedListWorker(kind, parseElement, expectSuccess, refTrailingCommaPos) {
const result = [];
let trailingCommaPos = -1;
for (;;) {
if (this.tsIsListTerminator(kind)) {
break;
}
trailingCommaPos = -1;
const element = parseElement();
if (element == null) {
return undefined;
}
result.push(element);
if (this.eat(12)) {
trailingCommaPos = this.state.lastTokStart;
continue;
}
if (this.tsIsListTerminator(kind)) {
break;
}
if (expectSuccess) {
this.expect(12);
}
return undefined;
}
if (refTrailingCommaPos) {
refTrailingCommaPos.value = trailingCommaPos;
}
return result;
}
tsParseBracketedList(kind, parseElement, bracket, skipFirstToken, refTrailingCommaPos) {
if (!skipFirstToken) {
if (bracket) {
this.expect(0);
} else {
this.expect(47);
}
}
const result = this.tsParseDelimitedList(kind, parseElement, refTrailingCommaPos);
if (bracket) {
this.expect(3);
} else {
this.expect(48);
}
return result;
}
tsParseImportType() {
const node = this.startNode();
this.expect(83);
this.expect(10);
if (!this.match(131)) {
this.raise(TSErrors.UnsupportedImportTypeArgument, {
at: this.state.startLoc
});
}
node.argument = super.parseExprAtom();
this.expect(11);
if (this.eat(16)) {
node.qualifier = this.tsParseEntityName();
}
if (this.match(47)) {
node.typeParameters = this.tsParseTypeArguments();
}
return this.finishNode(node, "TSImportType");
}
tsParseEntityName(allowReservedWords = true) {
let entity = this.parseIdentifier(allowReservedWords);
while (this.eat(16)) {
const node = this.startNodeAtNode(entity);
node.left = entity;
node.right = this.parseIdentifier(allowReservedWords);
entity = this.finishNode(node, "TSQualifiedName");
}
return entity;
}
tsParseTypeReference() {
const node = this.startNode();
node.typeName = this.tsParseEntityName();
if (!this.hasPrecedingLineBreak() && this.match(47)) {
node.typeParameters = this.tsParseTypeArguments();
}
return this.finishNode(node, "TSTypeReference");
}
tsParseThisTypePredicate(lhs) {
this.next();
const node = this.startNodeAtNode(lhs);
node.parameterName = lhs;
node.typeAnnotation = this.tsParseTypeAnnotation(false);
node.asserts = false;
return this.finishNode(node, "TSTypePredicate");
}
tsParseThisTypeNode() {
const node = this.startNode();
this.next();
return this.finishNode(node, "TSThisType");
}
tsParseTypeQuery() {
const node = this.startNode();
this.expect(87);
if (this.match(83)) {
node.exprName = this.tsParseImportType();
} else {
node.exprName = this.tsParseEntityName();
}
if (!this.hasPrecedingLineBreak() && this.match(47)) {
node.typeParameters = this.tsParseTypeArguments();
}
return this.finishNode(node, "TSTypeQuery");
}
tsParseTypeParameter(parseModifiers) {
const node = this.startNode();
parseModifiers(node);
node.name = this.tsParseTypeParameterName();
node.constraint = this.tsEatThenParseType(81);
node.default = this.tsEatThenParseType(29);
return this.finishNode(node, "TSTypeParameter");
}
tsTryParseTypeParameters(parseModifiers) {
if (this.match(47)) {
return this.tsParseTypeParameters(parseModifiers);
}
}
tsParseTypeParameters(parseModifiers) {
const node = this.startNode();
if (this.match(47) || this.match(140)) {
this.next();
} else {
this.unexpected();
}
const refTrailingCommaPos = {
value: -1
};
node.params = this.tsParseBracketedList("TypeParametersOrArguments", this.tsParseTypeParameter.bind(this, parseModifiers), false, true, refTrailingCommaPos);
if (node.params.length === 0) {
this.raise(TSErrors.EmptyTypeParameters, {
at: node
});
}
if (refTrailingCommaPos.value !== -1) {
this.addExtra(node, "trailingComma", refTrailingCommaPos.value);
}
return this.finishNode(node, "TSTypeParameterDeclaration");
}
tsFillSignature(returnToken, signature) {
const returnTokenRequired = returnToken === 19;
const paramsKey = "parameters";
const returnTypeKey = "typeAnnotation";
signature.typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
this.expect(10);
signature[paramsKey] = this.tsParseBindingListForSignature();
if (returnTokenRequired) {
signature[returnTypeKey] = this.tsParseTypeOrTypePredicateAnnotation(returnToken);
} else if (this.match(returnToken)) {
signature[returnTypeKey] = this.tsParseTypeOrTypePredicateAnnotation(returnToken);
}
}
tsParseBindingListForSignature() {
const list = super.parseBindingList(11, 41, _lval.ParseBindingListFlags.IS_FUNCTION_PARAMS);
for (const pattern of list) {
const {
type
} = pattern;
if (type === "AssignmentPattern" || type === "TSParameterProperty") {
this.raise(TSErrors.UnsupportedSignatureParameterKind, {
at: pattern,
type
});
}
}
return list;
}
tsParseTypeMemberSemicolon() {
if (!this.eat(12) && !this.isLineTerminator()) {
this.expect(13);
}
}
tsParseSignatureMember(kind, node) {
this.tsFillSignature(14, node);
this.tsParseTypeMemberSemicolon();
return this.finishNode(node, kind);
}
tsIsUnambiguouslyIndexSignature() {
this.next();
if ((0, _types.tokenIsIdentifier)(this.state.type)) {
this.next();
return this.match(14);
}
return false;
}
tsTryParseIndexSignature(node) {
if (!(this.match(0) && this.tsLookAhead(this.tsIsUnambiguouslyIndexSignature.bind(this)))) {
return;
}
this.expect(0);
const id = this.parseIdentifier();
id.typeAnnotation = this.tsParseTypeAnnotation();
this.resetEndLocation(id);
this.expect(3);
node.parameters = [id];
const type = this.tsTryParseTypeAnnotation();
if (type) node.typeAnnotation = type;
this.tsParseTypeMemberSemicolon();
return this.finishNode(node, "TSIndexSignature");
}
tsParsePropertyOrMethodSignature(node, readonly) {
if (this.eat(17)) node.optional = true;
const nodeAny = node;
if (this.match(10) || this.match(47)) {
if (readonly) {
this.raise(TSErrors.ReadonlyForMethodSignature, {
at: node
});
}
const method = nodeAny;
if (method.kind && this.match(47)) {
this.raise(TSErrors.AccesorCannotHaveTypeParameters, {
at: this.state.curPosition()
});
}
this.tsFillSignature(14, method);
this.tsParseTypeMemberSemicolon();
const paramsKey = "parameters";
const returnTypeKey = "typeAnnotation";
if (method.kind === "get") {
if (method[paramsKey].length > 0) {
this.raise(_parseError.Errors.BadGetterArity, {
at: this.state.curPosition()
});
if (this.isThisParam(method[paramsKey][0])) {
this.raise(TSErrors.AccesorCannotDeclareThisParameter, {
at: this.state.curPosition()
});
}
}
} else if (method.kind === "set") {
if (method[paramsKey].length !== 1) {
this.raise(_parseError.Errors.BadSetterArity, {
at: this.state.curPosition()
});
} else {
const firstParameter = method[paramsKey][0];
if (this.isThisParam(firstParameter)) {
this.raise(TSErrors.AccesorCannotDeclareThisParameter, {
at: this.state.curPosition()
});
}
if (firstParameter.type === "Identifier" && firstParameter.optional) {
this.raise(TSErrors.SetAccesorCannotHaveOptionalParameter, {
at: this.state.curPosition()
});
}
if (firstParameter.type === "RestElement") {
this.raise(TSErrors.SetAccesorCannotHaveRestParameter, {
at: this.state.curPosition()
});
}
}
if (method[returnTypeKey]) {
this.raise(TSErrors.SetAccesorCannotHaveReturnType, {
at: method[returnTypeKey]
});
}
} else {
method.kind = "method";
}
return this.finishNode(method, "TSMethodSignature");
} else {
const property = nodeAny;
if (readonly) property.readonly = true;
const type = this.tsTryParseTypeAnnotation();
if (type) property.typeAnnotation = type;
this.tsParseTypeMemberSemicolon();
return this.finishNode(property, "TSPropertySignature");
}
}
tsParseTypeMember() {
const node = this.startNode();
if (this.match(10) || this.match(47)) {
return this.tsParseSignatureMember("TSCallSignatureDeclaration", node);
}
if (this.match(77)) {
const id = this.startNode();
this.next();
if (this.match(10) || this.match(47)) {
return this.tsParseSignatureMember("TSConstructSignatureDeclaration", node);
} else {
node.key = this.createIdentifier(id, "new");
return this.tsParsePropertyOrMethodSignature(node, false);
}
}
this.tsParseModifiers({
allowedModifiers: ["readonly"],
disallowedModifiers: ["declare", "abstract", "private", "protected", "public", "static", "override"]
}, node);
const idx = this.tsTryParseIndexSignature(node);
if (idx) {
return idx;
}
super.parsePropertyName(node);
if (!node.computed && node.key.type === "Identifier" && (node.key.name === "get" || node.key.name === "set") && this.tsTokenCanFollowModifier()) {
node.kind = node.key.name;
super.parsePropertyName(node);
}
return this.tsParsePropertyOrMethodSignature(node, !!node.readonly);
}
tsParseTypeLiteral() {
const node = this.startNode();
node.members = this.tsParseObjectTypeMembers();
return this.finishNode(node, "TSTypeLiteral");
}
tsParseObjectTypeMembers() {
this.expect(5);
const members = this.tsParseList("TypeMembers", this.tsParseTypeMember.bind(this));
this.expect(8);
return members;
}
tsIsStartOfMappedType() {
this.next();
if (this.eat(53)) {
return this.isContextual(120);
}
if (this.isContextual(120)) {
this.next();
}
if (!this.match(0)) {
return false;
}
this.next();
if (!this.tsIsIdentifier()) {
return false;
}
this.next();
return this.match(58);
}
tsParseMappedTypeParameter() {
const node = this.startNode();
node.name = this.tsParseTypeParameterName();
node.constraint = this.tsExpectThenParseType(58);
return this.finishNode(node, "TSTypeParameter");
}
tsParseMappedType() {
const node = this.startNode();
this.expect(5);
if (this.match(53)) {
node.readonly = this.state.value;
this.next();
this.expectContextual(120);
} else if (this.eatContextual(120)) {
node.readonly = true;
}
this.expect(0);
node.typeParameter = this.tsParseMappedTypeParameter();
node.nameType = this.eatContextual(93) ? this.tsParseType() : null;
this.expect(3);
if (this.match(53)) {
node.optional = this.state.value;
this.next();
this.expect(17);
} else if (this.eat(17)) {
node.optional = true;
}
node.typeAnnotation = this.tsTryParseType();
this.semicolon();
this.expect(8);
return this.finishNode(node, "TSMappedType");
}
tsParseTupleType() {
const node = this.startNode();
node.elementTypes = this.tsParseBracketedList("TupleElementTypes", this.tsParseTupleElementType.bind(this), true, false);
let seenOptionalElement = false;
let labeledElements = null;
node.elementTypes.forEach(elementNode => {
var _labeledElements;
const {
type
} = elementNode;
if (seenOptionalElement && type !== "TSRestType" && type !== "TSOptionalType" && !(type === "TSNamedTupleMember" && elementNode.optional)) {
this.raise(TSErrors.OptionalTypeBeforeRequired, {
at: elementNode
});
}
seenOptionalElement || (seenOptionalElement = type === "TSNamedTupleMember" && elementNode.optional || type === "TSOptionalType");
let checkType = type;
if (type === "TSRestType") {
elementNode = elementNode.typeAnnotation;
checkType = elementNode.type;
}
const isLabeled = checkType === "TSNamedTupleMember";
(_labeledElements = labeledElements) != null ? _labeledElements : labeledElements = isLabeled;
if (labeledElements !== isLabeled) {
this.raise(TSErrors.MixedLabeledAndUnlabeledElements, {
at: elementNode
});
}
});
return this.finishNode(node, "TSTupleType");
}
tsParseTupleElementType() {
const {
startLoc
} = this.state;
const rest = this.eat(21);
let labeled;
let label;
let optional;
let type;
const isWord = (0, _types.tokenIsKeywordOrIdentifier)(this.state.type);
const chAfterWord = isWord ? this.lookaheadCharCode() : null;
if (chAfterWord === 58) {
labeled = true;
optional = false;
label = this.parseIdentifier(true);
this.expect(14);
type = this.tsParseType();
} else if (chAfterWord === 63) {
optional = true;
const startLoc = this.state.startLoc;
const wordName = this.state.value;
const typeOrLabel = this.tsParseNonArrayType();
if (this.lookaheadCharCode() === 58) {
labeled = true;
label = this.createIdentifier(this.startNodeAt(startLoc), wordName);
this.expect(17);
this.expect(14);
type = this.tsParseType();
} else {
labeled = false;
type = typeOrLabel;
this.expect(17);
}
} else {
type = this.tsParseType();
optional = this.eat(17);
labeled = this.eat(14);
}
if (labeled) {
let labeledNode;
if (label) {
labeledNode = this.startNodeAtNode(label);
labeledNode.optional = optional;
labeledNode.label = label;
labeledNode.elementType = type;
if (this.eat(17)) {
labeledNode.optional = true;
this.raise(TSErrors.TupleOptionalAfterType, {
at: this.state.lastTokStartLoc
});
}
} else {
labeledNode = this.startNodeAtNode(type);
labeledNode.optional = optional;
this.raise(TSErrors.InvalidTupleMemberLabel, {
at: type
});
labeledNode.label = type;
labeledNode.elementType = this.tsParseType();
}
type = this.finishNode(labeledNode, "TSNamedTupleMember");
} else if (optional) {
const optionalTypeNode = this.startNodeAtNode(type);
optionalTypeNode.typeAnnotation = type;
type = this.finishNode(optionalTypeNode, "TSOptionalType");
}
if (rest) {
const restNode = this.startNodeAt(startLoc);
restNode.typeAnnotation = type;
type = this.finishNode(restNode, "TSRestType");
}
return type;
}
tsParseParenthesizedType() {
const node = this.startNode();
this.expect(10);
node.typeAnnotation = this.tsParseType();
this.expect(11);
return this.finishNode(node, "TSParenthesizedType");
}
tsParseFunctionOrConstructorType(type, abstract) {
const node = this.startNode();
if (type === "TSConstructorType") {
node.abstract = !!abstract;
if (abstract) this.next();
this.next();
}
this.tsInAllowConditionalTypesContext(() => this.tsFillSignature(19, node));
return this.finishNode(node, type);
}
tsParseLiteralTypeNode() {
const node = this.startNode();
switch (this.state.type) {
case 132:
case 133:
case 131:
case 85:
case 86:
node.literal = super.parseExprAtom();
break;
default:
this.unexpected();
}
return this.finishNode(node, "TSLiteralType");
}
tsParseTemplateLiteralType() {
const node = this.startNode();
node.literal = super.parseTemplate(false);
return this.finishNode(node, "TSLiteralType");
}
parseTemplateSubstitution() {
if (this.state.inType) return this.tsParseType();
return super.parseTemplateSubstitution();
}
tsParseThisTypeOrThisTypePredicate() {
const thisKeyword = this.tsParseThisTypeNode();
if (this.isContextual(114) && !this.hasPrecedingLineBreak()) {
return this.tsParseThisTypePredicate(thisKeyword);
} else {
return thisKeyword;
}
}
tsParseNonArrayType() {
switch (this.state.type) {
case 131:
case 132:
case 133:
case 85:
case 86:
return this.tsParseLiteralTypeNode();
case 53:
if (this.state.value === "-") {
const node = this.startNode();
const nextToken = this.lookahead();
if (nextToken.type !== 132 && nextToken.type !== 133) {
this.unexpected();
}
node.literal = this.parseMaybeUnary();
return this.finishNode(node, "TSLiteralType");
}
break;
case 78:
return this.tsParseThisTypeOrThisTypePredicate();
case 87:
return this.tsParseTypeQuery();
case 83:
return this.tsParseImportType();
case 5:
return this.tsLookAhead(this.tsIsStartOfMappedType.bind(this)) ? this.tsParseMappedType() : this.tsParseTypeLiteral();
case 0:
return this.tsParseTupleType();
case 10:
;
return this.tsParseParenthesizedType();
case 25:
case 24:
return this.tsParseTemplateLiteralType();
default:
{
const {
type
} = this.state;
if ((0, _types.tokenIsIdentifier)(type) || type === 88 || type === 84) {
const nodeType = type === 88 ? "TSVoidKeyword" : type === 84 ? "TSNullKeyword" : keywordTypeFromName(this.state.value);
if (nodeType !== undefined && this.lookaheadCharCode() !== 46) {
const node = this.startNode();
this.next();
return this.finishNode(node, nodeType);
}
return this.tsParseTypeReference();
}
}
}
this.unexpected();
}
tsParseArrayTypeOrHigher() {
let type = this.tsParseNonArrayType();
while (!this.hasPrecedingLineBreak() && this.eat(0)) {
if (this.match(3)) {
const node = this.startNodeAtNode(type);
node.elementType = type;
this.expect(3);
type = this.finishNode(node, "TSArrayType");
} else {
const node = this.startNodeAtNode(type);
node.objectType = type;
node.indexType = this.tsParseType();
this.expect(3);
type = this.finishNode(node, "TSIndexedAccessType");
}
}
return type;
}
tsParseTypeOperator() {
const node = this.startNode();
const operator = this.state.value;
this.next();
node.operator = operator;
node.typeAnnotation = this.tsParseTypeOperatorOrHigher();
if (operator === "readonly") {
this.tsCheckTypeAnnotationForReadOnly(node);
}
return this.finishNode(node, "TSTypeOperator");
}
tsCheckTypeAnnotationForReadOnly(node) {
switch (node.typeAnnotation.type) {
case "TSTupleType":
case "TSArrayType":
return;
default:
this.raise(TSErrors.UnexpectedReadonly, {
at: node
});
}
}
tsParseInferType() {
const node = this.startNode();
this.expectContextual(113);
const typeParameter = this.startNode();
typeParameter.name = this.tsParseTypeParameterName();
typeParameter.constraint = this.tsTryParse(() => this.tsParseConstraintForInferType());
node.typeParameter = this.finishNode(typeParameter, "TSTypeParameter");
return this.finishNode(node, "TSInferType");
}
tsParseConstraintForInferType() {
if (this.eat(81)) {
const constraint = this.tsInDisallowConditionalTypesContext(() => this.tsParseType());
if (this.state.inDisallowConditionalTypesContext || !this.match(17)) {
return constraint;
}
}
}
tsParseTypeOperatorOrHigher() {
const isTypeOperator = (0, _types.tokenIsTSTypeOperator)(this.state.type) && !this.state.containsEsc;
return isTypeOperator ? this.tsParseTypeOperator() : this.isContextual(113) ? this.tsParseInferType() : this.tsInAllowConditionalTypesContext(() => this.tsParseArrayTypeOrHigher());
}
tsParseUnionOrIntersectionType(kind, parseConstituentType, operator) {
const node = this.startNode();
const hasLeadingOperator = this.eat(operator);
const types = [];
do {
types.push(parseConstituentType());
} while (this.eat(operator));
if (types.length === 1 && !hasLeadingOperator) {
return types[0];
}
node.types = types;
return this.finishNode(node, kind);
}
tsParseIntersectionTypeOrHigher() {
return this.tsParseUnionOrIntersectionType("TSIntersectionType", this.tsParseTypeOperatorOrHigher.bind(this), 45);
}
tsParseUnionTypeOrHigher() {
return this.tsParseUnionOrIntersectionType("TSUnionType", this.tsParseIntersectionTypeOrHigher.bind(this), 43);
}
tsIsStartOfFunctionType() {
if (this.match(47)) {
return true;
}
return this.match(10) && this.tsLookAhead(this.tsIsUnambiguouslyStartOfFunctionType.bind(this));
}
tsSkipParameterStart() {
if ((0, _types.tokenIsIdentifier)(this.state.type) || this.match(78)) {
this.next();
return true;
}
if (this.match(5)) {
const {
errors
} = this.state;
const previousErrorCount = errors.length;
try {
this.parseObjectLike(8, true);
return errors.length === previousErrorCount;
} catch (_unused) {
return false;
}
}
if (this.match(0)) {
this.next();
const {
errors
} = this.state;
const previousErrorCount = errors.length;
try {
super.parseBindingList(3, 93, _lval.ParseBindingListFlags.ALLOW_EMPTY);
return errors.length === previousErrorCount;
} catch (_unused2) {
return false;
}
}
return false;
}
tsIsUnambiguouslyStartOfFunctionType() {
this.next();
if (this.match(11) || this.match(21)) {
return true;
}
if (this.tsSkipParameterStart()) {
if (this.match(14) || this.match(12) || this.match(17) || this.match(29)) {
return true;
}
if (this.match(11)) {
this.next();
if (this.match(19)) {
return true;
}
}
}
return false;
}
tsParseTypeOrTypePredicateAnnotation(returnToken) {
return this.tsInType(() => {
const t = this.startNode();
this.expect(returnToken);
const node = this.startNode();
const asserts = !!this.tsTryParse(this.tsParseTypePredicateAsserts.bind(this));
if (asserts && this.match(78)) {
let thisTypePredicate = this.tsParseThisTypeOrThisTypePredicate();
if (thisTypePredicate.type === "TSThisType") {
node.parameterName = thisTypePredicate;
node.asserts = true;
node.typeAnnotation = null;
thisTypePredicate = this.finishNode(node, "TSTypePredicate");
} else {
this.resetStartLocationFromNode(thisTypePredicate, node);
thisTypePredicate.asserts = true;
}
t.typeAnnotation = thisTypePredicate;
return this.finishNode(t, "TSTypeAnnotation");
}
const typePredicateVariable = this.tsIsIdentifier() && this.tsTryParse(this.tsParseTypePredicatePrefix.bind(this));
if (!typePredicateVariable) {
if (!asserts) {
return this.tsParseTypeAnnotation(false, t);
}
node.parameterName = this.parseIdentifier();
node.asserts = asserts;
node.typeAnnotation = null;
t.typeAnnotation = this.finishNode(node, "TSTypePredicate");
return this.finishNode(t, "TSTypeAnnotation");
}
const type = this.tsParseTypeAnnotation(false);
node.parameterName = typePredicateVariable;
node.typeAnnotation = type;
node.asserts = asserts;
t.typeAnnotation = this.finishNode(node, "TSTypePredicate");
return this.finishNode(t, "TSTypeAnnotation");
});
}
tsTryParseTypeOrTypePredicateAnnotation() {
if (this.match(14)) {
return this.tsParseTypeOrTypePredicateAnnotation(14);
}
}
tsTryParseTypeAnnotation() {
if (this.match(14)) {
return this.tsParseTypeAnnotation();
}
}
tsTryParseType() {
return this.tsEatThenParseType(14);
}
tsParseTypePredicatePrefix() {
const id = this.parseIdentifier();
if (this.isContextual(114) && !this.hasPrecedingLineBreak()) {
this.next();
return id;
}
}
tsParseTypePredicateAsserts() {
if (this.state.type !== 107) {
return false;
}
const containsEsc = this.state.containsEsc;
this.next();
if (!(0, _types.tokenIsIdentifier)(this.state.type) && !this.match(78)) {
return false;
}
if (containsEsc) {
this.raise(_parseError.Errors.InvalidEscapedReservedWord, {
at: this.state.lastTokStartLoc,
reservedWord: "asserts"
});
}
return true;
}
tsParseTypeAnnotation(eatColon = true, t = this.startNode()) {
this.tsInType(() => {
if (eatColon) this.expect(14);
t.typeAnnotation = this.tsParseType();
});
return this.finishNode(t, "TSTypeAnnotation");
}
tsParseType() {
assert(this.state.inType);
const type = this.tsParseNonConditionalType();
if (this.state.inDisallowConditionalTypesContext || this.hasPrecedingLineBreak() || !this.eat(81)) {
return type;
}
const node = this.startNodeAtNode(type);
node.checkType = type;
node.extendsType = this.tsInDisallowConditionalTypesContext(() => this.tsParseNonConditionalType());
this.expect(17);
node.trueType = this.tsInAllowConditionalTypesContext(() => this.tsParseType());
this.expect(14);
node.falseType = this.tsInAllowConditionalTypesContext(() => this.tsParseType());
return this.finishNode(node, "TSConditionalType");
}
isAbstractConstructorSignature() {
return this.isContextual(122) && this.lookahead().type === 77;
}
tsParseNonConditionalType() {
if (this.tsIsStartOfFunctionType()) {
return this.tsParseFunctionOrConstructorType("TSFunctionType");
}
if (this.match(77)) {
return this.tsParseFunctionOrConstructorType("TSConstructorType");
} else if (this.isAbstractConstructorSignature()) {
return this.tsParseFunctionOrConstructorType("TSConstructorType", true);
}
return this.tsParseUnionTypeOrHigher();
}
tsParseTypeAssertion() {
if (this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) {
this.raise(TSErrors.ReservedTypeAssertion, {
at: this.state.startLoc
});
}
const node = this.startNode();
node.typeAnnotation = this.tsInType(() => {
this.next();
return this.match(75) ? this.tsParseTypeReference() : this.tsParseType();
});
this.expect(48);
node.expression = this.parseMaybeUnary();
return this.finishNode(node, "TSTypeAssertion");
}
tsParseHeritageClause(token) {
const originalStartLoc = this.state.startLoc;
const delimitedList = this.tsParseDelimitedList("HeritageClauseElement", () => {
const node = this.startNode();
node.expression = this.tsParseEntityName();
if (this.match(47)) {
node.typeParameters = this.tsParseTypeArguments();
}
return this.finishNode(node, "TSExpressionWithTypeArguments");
});
if (!delimitedList.length) {
this.raise(TSErrors.EmptyHeritageClauseType, {
at: originalStartLoc,
token
});
}
return delimitedList;
}
tsParseInterfaceDeclaration(node, properties = {}) {
if (this.hasFollowingLineBreak()) return null;
this.expectContextual(127);
if (properties.declare) node.declare = true;
if ((0, _types.tokenIsIdentifier)(this.state.type)) {
node.id = this.parseIdentifier();
this.checkIdentifier(node.id, _scopeflags.BIND_TS_INTERFACE);
} else {
node.id = null;
this.raise(TSErrors.MissingInterfaceName, {
at: this.state.startLoc
});
}
node.typeParameters = this.tsTryParseTypeParameters(this.tsParseInOutConstModifiers);
if (this.eat(81)) {
node.extends = this.tsParseHeritageClause("extends");
}
const body = this.startNode();
body.body = this.tsInType(this.tsParseObjectTypeMembers.bind(this));
node.body = this.finishNode(body, "TSInterfaceBody");
return this.finishNode(node, "TSInterfaceDeclaration");
}
tsParseTypeAliasDeclaration(node) {
node.id = this.parseIdentifier();
this.checkIdentifier(node.id, _scopeflags.BIND_TS_TYPE);
node.typeAnnotation = this.tsInType(() => {
node.typeParameters = this.tsTryParseTypeParameters(this.tsParseInOutModifiers);
this.expect(29);
if (this.isContextual(112) && this.lookahead().type !== 16) {
const node = this.startNode();
this.next();
return this.finishNode(node, "TSIntrinsicKeyword");
}
return this.tsParseType();
});
this.semicolon();
return this.finishNode(node, "TSTypeAliasDeclaration");
}
tsInNoContext(cb) {
const oldContext = this.state.context;
this.state.context = [oldContext[0]];
try {
return cb();
} finally {
this.state.context = oldContext;
}
}
tsInType(cb) {
const oldInType = this.state.inType;
this.state.inType = true;
try {
return cb();
} finally {
this.state.inType = oldInType;
}
}
tsInDisallowConditionalTypesContext(cb) {
const oldInDisallowConditionalTypesContext = this.state.inDisallowConditionalTypesContext;
this.state.inDisallowConditionalTypesContext = true;
try {
return cb();
} finally {
this.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext;
}
}
tsInAllowConditionalTypesContext(cb) {
const oldInDisallowConditionalTypesContext = this.state.inDisallowConditionalTypesContext;
this.state.inDisallowConditionalTypesContext = false;
try {
return cb();
} finally {
this.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext;
}
}
tsEatThenParseType(token) {
if (this.match(token)) {
return this.tsNextThenParseType();
}
}
tsExpectThenParseType(token) {
return this.tsInType(() => {
this.expect(token);
return this.tsParseType();
});
}
tsNextThenParseType() {
return this.tsInType(() => {
this.next();
return this.tsParseType();
});
}
tsParseEnumMember() {
const node = this.startNode();
node.id = this.match(131) ? super.parseStringLiteral(this.state.value) : this.parseIdentifier(true);
if (this.eat(29)) {
node.initializer = super.parseMaybeAssignAllowIn();
}
return this.finishNode(node, "TSEnumMember");
}
tsParseEnumDeclaration(node, properties = {}) {
if (properties.const) node.const = true;
if (properties.declare) node.declare = true;
this.expectContextual(124);
node.id = this.parseIdentifier();
this.checkIdentifier(node.id, node.const ? _scopeflags.BIND_TS_CONST_ENUM : _scopeflags.BIND_TS_ENUM);
this.expect(5);
node.members = this.tsParseDelimitedList("EnumMembers", this.tsParseEnumMember.bind(this));
this.expect(8);
return this.finishNode(node, "TSEnumDeclaration");
}
tsParseModuleBlock() {
const node = this.startNode();
this.scope.enter(_scopeflags.SCOPE_OTHER);
this.expect(5);
super.parseBlockOrModuleBlockBody(node.body = [], undefined, true, 8);
this.scope.exit();
return this.finishNode(node, "TSModuleBlock");
}
tsParseModuleOrNamespaceDeclaration(node, nested = false) {
node.id = this.parseIdentifier();
if (!nested) {
this.checkIdentifier(node.id, _scopeflags.BIND_TS_NAMESPACE);
}
if (this.eat(16)) {
const inner = this.startNode();
this.tsParseModuleOrNamespaceDeclaration(inner, true);
node.body = inner;
} else {
this.scope.enter(_scopeflags.SCOPE_TS_MODULE);
this.prodParam.enter(_productionParameter.PARAM);
node.body = this.tsParseModuleBlock();
this.prodParam.exit();
this.scope.exit();
}
return this.finishNode(node, "TSModuleDeclaration");
}
tsParseAmbientExternalModuleDeclaration(node) {
if (this.isContextual(110)) {
node.global = true;
node.id = this.parseIdentifier();
} else if (this.match(131)) {
node.id = super.parseStringLiteral(this.state.value);
} else {
this.unexpected();
}
if (this.match(5)) {
this.scope.enter(_scopeflags.SCOPE_TS_MODULE);
this.prodParam.enter(_productionParameter.PARAM);
node.body = this.tsParseModuleBlock();
this.prodParam.exit();
this.scope.exit();
} else {
this.semicolon();
}
return this.finishNode(node, "TSModuleDeclaration");
}
tsParseImportEqualsDeclaration(node, maybeDefaultIdentifier, isExport) {
node.isExport = isExport || false;
node.id = maybeDefaultIdentifier || this.parseIdentifier();
this.checkIdentifier(node.id, _scopeflags.BIND_FLAGS_TS_IMPORT);
this.expect(29);
const moduleReference = this.tsParseModuleReference();
if (node.importKind === "type" && moduleReference.type !== "TSExternalModuleReference") {
this.raise(TSErrors.ImportAliasHasImportType, {
at: moduleReference
});
}
node.moduleReference = moduleReference;
this.semicolon();
return this.finishNode(node, "TSImportEqualsDeclaration");
}
tsIsExternalModuleReference() {
return this.isContextual(117) && this.lookaheadCharCode() === 40;
}
tsParseModuleReference() {
return this.tsIsExternalModuleReference() ? this.tsParseExternalModuleReference() : this.tsParseEntityName(false);
}
tsParseExternalModuleReference() {
const node = this.startNode();
this.expectContextual(117);
this.expect(10);
if (!this.match(131)) {
this.unexpected();
}
node.expression = super.parseExprAtom();
this.expect(11);
this.sawUnambiguousESM = true;
return this.finishNode(node, "TSExternalModuleReference");
}
tsLookAhead(f) {
const state = this.state.clone();
const res = f();
this.state = state;
return res;
}
tsTryParseAndCatch(f) {
const result = this.tryParse(abort => f() || abort());
if (result.aborted || !result.node) return;
if (result.error) this.state = result.failState;
return result.node;
}
tsTryParse(f) {
const state = this.state.clone();
const result = f();
if (result !== undefined && result !== false) {
return result;
}
this.state = state;
}
tsTryParseDeclare(nany) {
if (this.isLineTerminator()) {
return;
}
let startType = this.state.type;
let kind;
if (this.isContextual(99)) {
startType = 74;
kind = "let";
}
return this.tsInAmbientContext(() => {
switch (startType) {
case 68:
nany.declare = true;
return super.parseFunctionStatement(nany, false, false);
case 80:
nany.declare = true;
return this.parseClass(nany, true, false);
case 124:
return this.tsParseEnumDeclaration(nany, {
declare: true
});
case 110:
return this.tsParseAmbientExternalModuleDeclaration(nany);
case 75:
case 74:
if (!this.match(75) || !this.isLookaheadContextual("enum")) {
nany.declare = true;
return this.parseVarStatement(nany, kind || this.state.value, true);
}
this.expect(75);
return this.tsParseEnumDeclaration(nany, {
const: true,
declare: true
});
case 127:
{
const result = this.tsParseInterfaceDeclaration(nany, {
declare: true
});
if (result) return result;
}
default:
if ((0, _types.tokenIsIdentifier)(startType)) {
return this.tsParseDeclaration(nany, this.state.value, true, null);
}
}
});
}
tsTryParseExportDeclaration() {
return this.tsParseDeclaration(this.startNode(), this.state.value, true, null);
}
tsParseExpressionStatement(node, expr, decorators) {
switch (expr.name) {
case "declare":
{
const declaration = this.tsTryParseDeclare(node);
if (declaration) {
declaration.declare = true;
}
return declaration;
}
case "global":
if (this.match(5)) {
this.scope.enter(_scopeflags.SCOPE_TS_MODULE);
this.prodParam.enter(_productionParameter.PARAM);
const mod = node;
mod.global = true;
mod.id = expr;
mod.body = this.tsParseModuleBlock();
this.scope.exit();
this.prodParam.exit();
return this.finishNode(mod, "TSModuleDeclaration");
}
break;
default:
return this.tsParseDeclaration(node, expr.name, false, decorators);
}
}
tsParseDeclaration(node, value, next, decorators) {
switch (value) {
case "abstract":
if (this.tsCheckLineTerminator(next) && (this.match(80) || (0, _types.tokenIsIdentifier)(this.state.type))) {
return this.tsParseAbstractDeclaration(node, decorators);
}
break;
case "module":
if (this.tsCheckLineTerminator(next)) {
if (this.match(131)) {
return this.tsParseAmbientExternalModuleDeclaration(node);
} else if ((0, _types.tokenIsIdentifier)(this.state.type)) {
return this.tsParseModuleOrNamespaceDeclaration(node);
}
}
break;
case "namespace":
if (this.tsCheckLineTerminator(next) && (0, _types.tokenIsIdentifier)(this.state.type)) {
return this.tsParseModuleOrNamespaceDeclaration(node);
}
break;
case "type":
if (this.tsCheckLineTerminator(next) && (0, _types.tokenIsIdentifier)(this.state.type)) {
return this.tsParseTypeAliasDeclaration(node);
}
break;
}
}
tsCheckLineTerminator(next) {
if (next) {
if (this.hasFollowingLineBreak()) return false;
this.next();
return true;
}
return !this.isLineTerminator();
}
tsTryParseGenericAsyncArrowFunction(startLoc) {
if (!this.match(47)) return;
const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
this.state.maybeInArrowParameters = true;
const res = this.tsTryParseAndCatch(() => {
const node = this.startNodeAt(startLoc);
node.typeParameters = this.tsParseTypeParameters(this.tsParseConstModifier);
super.parseFunctionParams(node);
node.returnType = this.tsTryParseTypeOrTypePredicateAnnotation();
this.expect(19);
return node;
});
this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
if (!res) return;
return super.parseArrowExpression(res, null, true);
}
tsParseTypeArgumentsInExpression() {
if (this.reScan_lt() !== 47) return;
return this.tsParseTypeArguments();
}
tsParseTypeArguments() {
const node = this.startNode();
node.params = this.tsInType(() => this.tsInNoContext(() => {
this.expect(47);
return this.tsParseDelimitedList("TypeParametersOrArguments", this.tsParseType.bind(this));
}));
if (node.params.length === 0) {
this.raise(TSErrors.EmptyTypeArguments, {
at: node
});
} else if (!this.state.inType && this.curContext() === _context.types.brace) {
this.reScan_lt_gt();
}
this.expect(48);
return this.finishNode(node, "TSTypeParameterInstantiation");
}
tsIsDeclarationStart() {
return (0, _types.tokenIsTSDeclarationStart)(this.state.type);
}
isExportDefaultSpecifier() {
if (this.tsIsDeclarationStart()) return false;
return super.isExportDefaultSpecifier();
}
parseAssignableListItem(flags, decorators) {
const startLoc = this.state.startLoc;
const modified = {};
this.tsParseModifiers({
allowedModifiers: ["public", "private", "protected", "override", "readonly"]
}, modified);
const accessibility = modified.accessibility;
const override = modified.override;
const readonly = modified.readonly;
if (!(flags & _lval.ParseBindingListFlags.IS_CONSTRUCTOR_PARAMS) && (accessibility || readonly || override)) {
this.raise(TSErrors.UnexpectedParameterModifier, {
at: startLoc
});
}
const left = this.parseMaybeDefault();
this.parseAssignableListItemTypes(left, flags);
const elt = this.parseMaybeDefault(left.loc.start, left);
if (accessibility || readonly || override) {
const pp = this.startNodeAt(startLoc);
if (decorators.length) {
pp.decorators = decorators;
}
if (accessibility) pp.accessibility = accessibility;
if (readonly) pp.readonly = readonly;
if (override) pp.override = override;
if (elt.type !== "Identifier" && elt.type !== "AssignmentPattern") {
this.raise(TSErrors.UnsupportedParameterPropertyKind, {
at: pp
});
}
pp.parameter = elt;
return this.finishNode(pp, "TSParameterProperty");
}
if (decorators.length) {
left.decorators = decorators;
}
return elt;
}
isSimpleParameter(node) {
return node.type === "TSParameterProperty" && super.isSimpleParameter(node.parameter) || super.isSimpleParameter(node);
}
tsDisallowOptionalPattern(node) {
for (const param of node.params) {
if (param.type !== "Identifier" && param.optional && !this.state.isAmbientContext) {
this.raise(TSErrors.PatternIsOptional, {
at: param
});
}
}
}
setArrowFunctionParameters(node, params, trailingCommaLoc) {
super.setArrowFunctionParameters(node, params, trailingCommaLoc);
this.tsDisallowOptionalPattern(node);
}
parseFunctionBodyAndFinish(node, type, isMethod = false) {
if (this.match(14)) {
node.returnType = this.tsParseTypeOrTypePredicateAnnotation(14);
}
const bodilessType = type === "FunctionDeclaration" ? "TSDeclareFunction" : type === "ClassMethod" || type === "ClassPrivateMethod" ? "TSDeclareMethod" : undefined;
if (bodilessType && !this.match(5) && this.isLineTerminator()) {
return this.finishNode(node, bodilessType);
}
if (bodilessType === "TSDeclareFunction" && this.state.isAmbientContext) {
this.raise(TSErrors.DeclareFunctionHasImplementation, {
at: node
});
if (node.declare) {
return super.parseFunctionBodyAndFinish(node, bodilessType, isMethod);
}
}
this.tsDisallowOptionalPattern(node);
return super.parseFunctionBodyAndFinish(node, type, isMethod);
}
registerFunctionStatementId(node) {
if (!node.body && node.id) {
this.checkIdentifier(node.id, _scopeflags.BIND_TS_AMBIENT);
} else {
super.registerFunctionStatementId(node);
}
}
tsCheckForInvalidTypeCasts(items) {
items.forEach(node => {
if ((node == null ? void 0 : node.type) === "TSTypeCastExpression") {
this.raise(TSErrors.UnexpectedTypeAnnotation, {
at: node.typeAnnotation
});
}
});
}
toReferencedList(exprList, isInParens) {
this.tsCheckForInvalidTypeCasts(exprList);
return exprList;
}
parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) {
const node = super.parseArrayLike(close, canBePattern, isTuple, refExpressionErrors);
if (node.type === "ArrayExpression") {
this.tsCheckForInvalidTypeCasts(node.elements);
}
return node;
}
parseSubscript(base, startLoc, noCalls, state) {
if (!this.hasPrecedingLineBreak() && this.match(35)) {
this.state.canStartJSXElement = false;
this.next();
const nonNullExpression = this.startNodeAt(startLoc);
nonNullExpression.expression = base;
return this.finishNode(nonNullExpression, "TSNonNullExpression");
}
let isOptionalCall = false;
if (this.match(18) && this.lookaheadCharCode() === 60) {
if (noCalls) {
state.stop = true;
return base;
}
state.optionalChainMember = isOptionalCall = true;
this.next();
}
if (this.match(47) || this.match(51)) {
let missingParenErrorLoc;
const result = this.tsTryParseAndCatch(() => {
if (!noCalls && this.atPossibleAsyncArrow(base)) {
const asyncArrowFn = this.tsTryParseGenericAsyncArrowFunction(startLoc);
if (asyncArrowFn) {
return asyncArrowFn;
}
}
const typeArguments = this.tsParseTypeArgumentsInExpression();
if (!typeArguments) return;
if (isOptionalCall && !this.match(10)) {
missingParenErrorLoc = this.state.curPosition();
return;
}
if ((0, _types.tokenIsTemplate)(this.state.type)) {
const result = super.parseTaggedTemplateExpression(base, startLoc, state);
result.typeParameters = typeArguments;
return result;
}
if (!noCalls && this.eat(10)) {
const node = this.startNodeAt(startLoc);
node.callee = base;
node.arguments = this.parseCallExpressionArguments(11, false);
this.tsCheckForInvalidTypeCasts(node.arguments);
node.typeParameters = typeArguments;
if (state.optionalChainMember) {
node.optional = isOptionalCall;
}
return this.finishCallExpression(node, state.optionalChainMember);
}
const tokenType = this.state.type;
if (tokenType === 48 || tokenType === 52 || tokenType !== 10 && (0, _types.tokenCanStartExpression)(tokenType) && !this.hasPrecedingLineBreak()) {
return;
}
const node = this.startNodeAt(startLoc);
node.expression = base;
node.typeParameters = typeArguments;
return this.finishNode(node, "TSInstantiationExpression");
});
if (missingParenErrorLoc) {
this.unexpected(missingParenErrorLoc, 10);
}
if (result) {
if (result.type === "TSInstantiationExpression" && (this.match(16) || this.match(18) && this.lookaheadCharCode() !== 40)) {
this.raise(TSErrors.InvalidPropertyAccessAfterInstantiationExpression, {
at: this.state.startLoc
});
}
return result;
}
}
return super.parseSubscript(base, startLoc, noCalls, state);
}
parseNewCallee(node) {
var _callee$extra;
super.parseNewCallee(node);
const {
callee
} = node;
if (callee.type === "TSInstantiationExpression" && !((_callee$extra = callee.extra) != null && _callee$extra.parenthesized)) {
node.typeParameters = callee.typeParameters;
node.callee = callee.expression;
}
}
parseExprOp(left, leftStartLoc, minPrec) {
let isSatisfies;
if ((0, _types.tokenOperatorPrecedence)(58) > minPrec && !this.hasPrecedingLineBreak() && (this.isContextual(93) || (isSatisfies = this.isContextual(118)))) {
const node = this.startNodeAt(leftStartLoc);
node.expression = left;
node.typeAnnotation = this.tsInType(() => {
this.next();
if (this.match(75)) {
if (isSatisfies) {
this.raise(_parseError.Errors.UnexpectedKeyword, {
at: this.state.startLoc,
keyword: "const"
});
}
return this.tsParseTypeReference();
}
return this.tsParseType();
});
this.finishNode(node, isSatisfies ? "TSSatisfiesExpression" : "TSAsExpression");
this.reScan_lt_gt();
return this.parseExprOp(node, leftStartLoc, minPrec);
}
return super.parseExprOp(left, leftStartLoc, minPrec);
}
checkReservedWord(word, startLoc, checkKeywords, isBinding) {
if (!this.state.isAmbientContext) {
super.checkReservedWord(word, startLoc, checkKeywords, isBinding);
}
}
checkImportReflection(node) {
super.checkImportReflection(node);
if (node.module && node.importKind !== "value") {
this.raise(TSErrors.ImportReflectionHasImportType, {
at: node.specifiers[0].loc.start
});
}
}
checkDuplicateExports() {}
isPotentialImportPhase(isExport) {
if (super.isPotentialImportPhase(isExport)) return true;
if (this.isContextual(128)) {
const ch = this.lookaheadCharCode();
return isExport ? ch === 123 || ch === 42 : ch !== 61;
}
return !isExport && this.isContextual(87);
}
applyImportPhase(node, isExport, phase, loc) {
super.applyImportPhase(node, isExport, phase, loc);
if (isExport) {
node.exportKind = phase === "type" ? "type" : "value";
} else {
node.importKind = phase === "type" || phase === "typeof" ? phase : "value";
}
}
parseImport(node) {
if (this.match(131)) {
node.importKind = "value";
return super.parseImport(node);
}
let importNode;
if ((0, _types.tokenIsIdentifier)(this.state.type) && this.lookaheadCharCode() === 61) {
node.importKind = "value";
return this.tsParseImportEqualsDeclaration(node);
} else if (this.isContextual(128)) {
const maybeDefaultIdentifier = this.parseMaybeImportPhase(node, false);
if (this.lookaheadCharCode() === 61) {
return this.tsParseImportEqualsDeclaration(node, maybeDefaultIdentifier);
} else {
importNode = super.parseImportSpecifiersAndAfter(node, maybeDefaultIdentifier);
}
} else {
importNode = super.parseImport(node);
}
if (importNode.importKind === "type" && importNode.specifiers.length > 1 && importNode.specifiers[0].type === "ImportDefaultSpecifier") {
this.raise(TSErrors.TypeImportCannotSpecifyDefaultAndNamed, {
at: importNode
});
}
return importNode;
}
parseExport(node, decorators) {
if (this.match(83)) {
this.next();
let maybeDefaultIdentifier = null;
if (this.isContextual(128) && this.isPotentialImportPhase(false)) {
maybeDefaultIdentifier = this.parseMaybeImportPhase(node, false);
} else {
node.importKind = "value";
}
return this.tsParseImportEqualsDeclaration(node, maybeDefaultIdentifier, true);
} else if (this.eat(29)) {
const assign = node;
assign.expression = super.parseExpression();
this.semicolon();
this.sawUnambiguousESM = true;
return this.finishNode(assign, "TSExportAssignment");
} else if (this.eatContextual(93)) {
const decl = node;
this.expectContextual(126);
decl.id = this.parseIdentifier();
this.semicolon();
return this.finishNode(decl, "TSNamespaceExportDeclaration");
} else {
return super.parseExport(node, decorators);
}
}
isAbstractClass() {
return this.isContextual(122) && this.lookahead().type === 80;
}
parseExportDefaultExpression() {
if (this.isAbstractClass()) {
const cls = this.startNode();
this.next();
cls.abstract = true;
return this.parseClass(cls, true, true);
}
if (this.match(127)) {
const result = this.tsParseInterfaceDeclaration(this.startNode());
if (result) return result;
}
return super.parseExportDefaultExpression();
}
parseVarStatement(node, kind, allowMissingInitializer = false) {
const {
isAmbientContext
} = this.state;
const declaration = super.parseVarStatement(node, kind, allowMissingInitializer || isAmbientContext);
if (!isAmbientContext) return declaration;
for (const {
id,
init
} of declaration.declarations) {
if (!init) continue;
if (kind !== "const" || !!id.typeAnnotation) {
this.raise(TSErrors.InitializerNotAllowedInAmbientContext, {
at: init
});
} else if (!isValidAmbientConstInitializer(init, this.hasPlugin("estree"))) {
this.raise(TSErrors.ConstInitiailizerMustBeStringOrNumericLiteralOrLiteralEnumReference, {
at: init
});
}
}
return declaration;
}
parseStatementContent(flags, decorators) {
if (this.match(75) && this.isLookaheadContextual("enum")) {
const node = this.startNode();
this.expect(75);
return this.tsParseEnumDeclaration(node, {
const: true
});
}
if (this.isContextual(124)) {
return this.tsParseEnumDeclaration(this.startNode());
}
if (this.isContextual(127)) {
const result = this.tsParseInterfaceDeclaration(this.startNode());
if (result) return result;
}
return super.parseStatementContent(flags, decorators);
}
parseAccessModifier() {
return this.tsParseModifier(["public", "protected", "private"]);
}
tsHasSomeModifiers(member, modifiers) {
return modifiers.some(modifier => {
if (tsIsAccessModifier(modifier)) {
return member.accessibility === modifier;
}
return !!member[modifier];
});
}
tsIsStartOfStaticBlocks() {
return this.isContextual(104) && this.lookaheadCharCode() === 123;
}
parseClassMember(classBody, member, state) {
const modifiers = ["declare", "private", "public", "protected", "override", "abstract", "readonly", "static"];
this.tsParseModifiers({
allowedModifiers: modifiers,
disallowedModifiers: ["in", "out"],
stopOnStartOfClassStaticBlock: true,
errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions
}, member);
const callParseClassMemberWithIsStatic = () => {
if (this.tsIsStartOfStaticBlocks()) {
this.next();
this.next();
if (this.tsHasSomeModifiers(member, modifiers)) {
this.raise(TSErrors.StaticBlockCannotHaveModifier, {
at: this.state.curPosition()
});
}
super.parseClassStaticBlock(classBody, member);
} else {
this.parseClassMemberWithIsStatic(classBody, member, state, !!member.static);
}
};
if (member.declare) {
this.tsInAmbientContext(callParseClassMemberWithIsStatic);
} else {
callParseClassMemberWithIsStatic();
}
}
parseClassMemberWithIsStatic(classBody, member, state, isStatic) {
const idx = this.tsTryParseIndexSignature(member);
if (idx) {
classBody.body.push(idx);
if (member.abstract) {
this.raise(TSErrors.IndexSignatureHasAbstract, {
at: member
});
}
if (member.accessibility) {
this.raise(TSErrors.IndexSignatureHasAccessibility, {
at: member,
modifier: member.accessibility
});
}
if (member.declare) {
this.raise(TSErrors.IndexSignatureHasDeclare, {
at: member
});
}
if (member.override) {
this.raise(TSErrors.IndexSignatureHasOverride, {
at: member
});
}
return;
}
if (!this.state.inAbstractClass && member.abstract) {
this.raise(TSErrors.NonAbstractClassHasAbstractMethod, {
at: member
});
}
if (member.override) {
if (!state.hadSuperClass) {
this.raise(TSErrors.OverrideNotInSubClass, {
at: member
});
}
}
super.parseClassMemberWithIsStatic(classBody, member, state, isStatic);
}
parsePostMemberNameModifiers(methodOrProp) {
const optional = this.eat(17);
if (optional) methodOrProp.optional = true;
if (methodOrProp.readonly && this.match(10)) {
this.raise(TSErrors.ClassMethodHasReadonly, {
at: methodOrProp
});
}
if (methodOrProp.declare && this.match(10)) {
this.raise(TSErrors.ClassMethodHasDeclare, {
at: methodOrProp
});
}
}
parseExpressionStatement(node, expr, decorators) {
const decl = expr.type === "Identifier" ? this.tsParseExpressionStatement(node, expr, decorators) : undefined;
return decl || super.parseExpressionStatement(node, expr, decorators);
}
shouldParseExportDeclaration() {
if (this.tsIsDeclarationStart()) return true;
return super.shouldParseExportDeclaration();
}
parseConditional(expr, startLoc, refExpressionErrors) {
if (!this.state.maybeInArrowParameters || !this.match(17)) {
return super.parseConditional(expr, startLoc, refExpressionErrors);
}
const result = this.tryParse(() => super.parseConditional(expr, startLoc));
if (!result.node) {
if (result.error) {
super.setOptionalParametersError(refExpressionErrors, result.error);
}
return expr;
}
if (result.error) this.state = result.failState;
return result.node;
}
parseParenItem(node, startLoc) {
node = super.parseParenItem(node, startLoc);
if (this.eat(17)) {
node.optional = true;
this.resetEndLocation(node);
}
if (this.match(14)) {
const typeCastNode = this.startNodeAt(startLoc);
typeCastNode.expression = node;
typeCastNode.typeAnnotation = this.tsParseTypeAnnotation();
return this.finishNode(typeCastNode, "TSTypeCastExpression");
}
return node;
}
parseExportDeclaration(node) {
if (!this.state.isAmbientContext && this.isContextual(123)) {
return this.tsInAmbientContext(() => this.parseExportDeclaration(node));
}
const startLoc = this.state.startLoc;
const isDeclare = this.eatContextual(123);
if (isDeclare && (this.isContextual(123) || !this.shouldParseExportDeclaration())) {
throw this.raise(TSErrors.ExpectedAmbientAfterExportDeclare, {
at: this.state.startLoc
});
}
const isIdentifier = (0, _types.tokenIsIdentifier)(this.state.type);
const declaration = isIdentifier && this.tsTryParseExportDeclaration() || super.parseExportDeclaration(node);
if (!declaration) return null;
if (declaration.type === "TSInterfaceDeclaration" || declaration.type === "TSTypeAliasDeclaration" || isDeclare) {
node.exportKind = "type";
}
if (isDeclare) {
this.resetStartLocation(declaration, startLoc);
declaration.declare = true;
}
return declaration;
}
parseClassId(node, isStatement, optionalId, bindingType) {
if ((!isStatement || optionalId) && this.isContextual(111)) {
return;
}
super.parseClassId(node, isStatement, optionalId, node.declare ? _scopeflags.BIND_TS_AMBIENT : _scopeflags.BIND_CLASS);
const typeParameters = this.tsTryParseTypeParameters(this.tsParseInOutConstModifiers);
if (typeParameters) node.typeParameters = typeParameters;
}
parseClassPropertyAnnotation(node) {
if (!node.optional) {
if (this.eat(35)) {
node.definite = true;
} else if (this.eat(17)) {
node.optional = true;
}
}
const type = this.tsTryParseTypeAnnotation();
if (type) node.typeAnnotation = type;
}
parseClassProperty(node) {
this.parseClassPropertyAnnotation(node);
if (this.state.isAmbientContext && !(node.readonly && !node.typeAnnotation) && this.match(29)) {
this.raise(TSErrors.DeclareClassFieldHasInitializer, {
at: this.state.startLoc
});
}
if (node.abstract && this.match(29)) {
const {
key
} = node;
this.raise(TSErrors.AbstractPropertyHasInitializer, {
at: this.state.startLoc,
propertyName: key.type === "Identifier" && !node.computed ? key.name : `[${this.input.slice(key.start, key.end)}]`
});
}
return super.parseClassProperty(node);
}
parseClassPrivateProperty(node) {
if (node.abstract) {
this.raise(TSErrors.PrivateElementHasAbstract, {
at: node
});
}
if (node.accessibility) {
this.raise(TSErrors.PrivateElementHasAccessibility, {
at: node,
modifier: node.accessibility
});
}
this.parseClassPropertyAnnotation(node);
return super.parseClassPrivateProperty(node);
}
parseClassAccessorProperty(node) {
this.parseClassPropertyAnnotation(node);
if (node.optional) {
this.raise(TSErrors.AccessorCannotBeOptional, {
at: node
});
}
return super.parseClassAccessorProperty(node);
}
pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) {
const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
if (typeParameters && isConstructor) {
this.raise(TSErrors.ConstructorHasTypeParameters, {
at: typeParameters
});
}
const {
declare = false,
kind
} = method;
if (declare && (kind === "get" || kind === "set")) {
this.raise(TSErrors.DeclareAccessor, {
at: method,
kind
});
}
if (typeParameters) method.typeParameters = typeParameters;
super.pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper);
}
pushClassPrivateMethod(classBody, method, isGenerator, isAsync) {
const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
if (typeParameters) method.typeParameters = typeParameters;
super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync);
}
declareClassPrivateMethodInScope(node, kind) {
if (node.type === "TSDeclareMethod") return;
if (node.type === "MethodDefinition" && !node.value.body) return;
super.declareClassPrivateMethodInScope(node, kind);
}
parseClassSuper(node) {
super.parseClassSuper(node);
if (node.superClass && (this.match(47) || this.match(51))) {
node.superTypeParameters = this.tsParseTypeArgumentsInExpression();
}
if (this.eatContextual(111)) {
node.implements = this.tsParseHeritageClause("implements");
}
}
parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) {
const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
if (typeParameters) prop.typeParameters = typeParameters;
return super.parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors);
}
parseFunctionParams(node, isConstructor) {
const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
if (typeParameters) node.typeParameters = typeParameters;
super.parseFunctionParams(node, isConstructor);
}
parseVarId(decl, kind) {
super.parseVarId(decl, kind);
if (decl.id.type === "Identifier" && !this.hasPrecedingLineBreak() && this.eat(35)) {
decl.definite = true;
}
const type = this.tsTryParseTypeAnnotation();
if (type) {
decl.id.typeAnnotation = type;
this.resetEndLocation(decl.id);
}
}
parseAsyncArrowFromCallExpression(node, call) {
if (this.match(14)) {
node.returnType = this.tsParseTypeAnnotation();
}
return super.parseAsyncArrowFromCallExpression(node, call);
}
parseMaybeAssign(refExpressionErrors, afterLeftParse) {
var _jsx, _jsx2, _typeCast, _jsx3, _typeCast2;
let state;
let jsx;
let typeCast;
if (this.hasPlugin("jsx") && (this.match(140) || this.match(47))) {
state = this.state.clone();
jsx = this.tryParse(() => super.parseMaybeAssign(refExpressionErrors, afterLeftParse), state);
if (!jsx.error) return jsx.node;
const {
context
} = this.state;
const currentContext = context[context.length - 1];
if (currentContext === _context.types.j_oTag || currentContext === _context.types.j_expr) {
context.pop();
}
}
if (!((_jsx = jsx) != null && _jsx.error) && !this.match(47)) {
return super.parseMaybeAssign(refExpressionErrors, afterLeftParse);
}
if (!state || state === this.state) state = this.state.clone();
let typeParameters;
const arrow = this.tryParse(abort => {
var _expr$extra, _typeParameters;
typeParameters = this.tsParseTypeParameters(this.tsParseConstModifier);
const expr = super.parseMaybeAssign(refExpressionErrors, afterLeftParse);
if (expr.type !== "ArrowFunctionExpression" || (_expr$extra = expr.extra) != null && _expr$extra.parenthesized) {
abort();
}
if (((_typeParameters = typeParameters) == null ? void 0 : _typeParameters.params.length) !== 0) {
this.resetStartLocationFromNode(expr, typeParameters);
}
expr.typeParameters = typeParameters;
;
return expr;
}, state);
if (!arrow.error && !arrow.aborted) {
if (typeParameters) this.reportReservedArrowTypeParam(typeParameters);
return arrow.node;
}
if (!jsx) {
assert(!this.hasPlugin("jsx"));
typeCast = this.tryParse(() => super.parseMaybeAssign(refExpressionErrors, afterLeftParse), state);
if (!typeCast.error) return typeCast.node;
}
if ((_jsx2 = jsx) != null && _jsx2.node) {
this.state = jsx.failState;
return jsx.node;
}
if (arrow.node) {
this.state = arrow.failState;
if (typeParameters) this.reportReservedArrowTypeParam(typeParameters);
return arrow.node;
}
if ((_typeCast = typeCast) != null && _typeCast.node) {
this.state = typeCast.failState;
return typeCast.node;
}
throw ((_jsx3 = jsx) == null ? void 0 : _jsx3.error) || arrow.error || ((_typeCast2 = typeCast) == null ? void 0 : _typeCast2.error);
}
reportReservedArrowTypeParam(node) {
var _node$extra;
if (node.params.length === 1 && !node.params[0].constraint && !((_node$extra = node.extra) != null && _node$extra.trailingComma) && this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) {
this.raise(TSErrors.ReservedArrowTypeParam, {
at: node
});
}
}
parseMaybeUnary(refExpressionErrors, sawUnary) {
if (!this.hasPlugin("jsx") && this.match(47)) {
return this.tsParseTypeAssertion();
}
return super.parseMaybeUnary(refExpressionErrors, sawUnary);
}
parseArrow(node) {
if (this.match(14)) {
const result = this.tryParse(abort => {
const returnType = this.tsParseTypeOrTypePredicateAnnotation(14);
if (this.canInsertSemicolon() || !this.match(19)) abort();
return returnType;
});
if (result.aborted) return;
if (!result.thrown) {
if (result.error) this.state = result.failState;
node.returnType = result.node;
}
}
return super.parseArrow(node);
}
parseAssignableListItemTypes(param, flags) {
if (!(flags & _lval.ParseBindingListFlags.IS_FUNCTION_PARAMS)) return param;
if (this.eat(17)) {
param.optional = true;
}
const type = this.tsTryParseTypeAnnotation();
if (type) param.typeAnnotation = type;
this.resetEndLocation(param);
return param;
}
isAssignable(node, isBinding) {
switch (node.type) {
case "TSTypeCastExpression":
return this.isAssignable(node.expression, isBinding);
case "TSParameterProperty":
return true;
default:
return super.isAssignable(node, isBinding);
}
}
toAssignable(node, isLHS = false) {
switch (node.type) {
case "ParenthesizedExpression":
this.toAssignableParenthesizedExpression(node, isLHS);
break;
case "TSAsExpression":
case "TSSatisfiesExpression":
case "TSNonNullExpression":
case "TSTypeAssertion":
if (isLHS) {
this.expressionScope.recordArrowParameterBindingError(TSErrors.UnexpectedTypeCastInParameter, {
at: node
});
} else {
this.raise(TSErrors.UnexpectedTypeCastInParameter, {
at: node
});
}
this.toAssignable(node.expression, isLHS);
break;
case "AssignmentExpression":
if (!isLHS && node.left.type === "TSTypeCastExpression") {
node.left = this.typeCastToParameter(node.left);
}
default:
super.toAssignable(node, isLHS);
}
}
toAssignableParenthesizedExpression(node, isLHS) {
switch (node.expression.type) {
case "TSAsExpression":
case "TSSatisfiesExpression":
case "TSNonNullExpression":
case "TSTypeAssertion":
case "ParenthesizedExpression":
this.toAssignable(node.expression, isLHS);
break;
default:
super.toAssignable(node, isLHS);
}
}
checkToRestConversion(node, allowPattern) {
switch (node.type) {
case "TSAsExpression":
case "TSSatisfiesExpression":
case "TSTypeAssertion":
case "TSNonNullExpression":
this.checkToRestConversion(node.expression, false);
break;
default:
super.checkToRestConversion(node, allowPattern);
}
}
isValidLVal(type, isUnparenthesizedInAssign, binding) {
return getOwn({
TSTypeCastExpression: true,
TSParameterProperty: "parameter",
TSNonNullExpression: "expression",
TSAsExpression: (binding !== _scopeflags.BIND_NONE || !isUnparenthesizedInAssign) && ["expression", true],
TSSatisfiesExpression: (binding !== _scopeflags.BIND_NONE || !isUnparenthesizedInAssign) && ["expression", true],
TSTypeAssertion: (binding !== _scopeflags.BIND_NONE || !isUnparenthesizedInAssign) && ["expression", true]
}, type) || super.isValidLVal(type, isUnparenthesizedInAssign, binding);
}
parseBindingAtom() {
if (this.state.type === 78) {
return this.parseIdentifier(true);
}
return super.parseBindingAtom();
}
parseMaybeDecoratorArguments(expr) {
if (this.match(47) || this.match(51)) {
const typeArguments = this.tsParseTypeArgumentsInExpression();
if (this.match(10)) {
const call = super.parseMaybeDecoratorArguments(expr);
call.typeParameters = typeArguments;
return call;
}
this.unexpected(null, 10);
}
return super.parseMaybeDecoratorArguments(expr);
}
checkCommaAfterRest(close) {
if (this.state.isAmbientContext && this.match(12) && this.lookaheadCharCode() === close) {
this.next();
return false;
}
return super.checkCommaAfterRest(close);
}
isClassMethod() {
return this.match(47) || super.isClassMethod();
}
isClassProperty() {
return this.match(35) || this.match(14) || super.isClassProperty();
}
parseMaybeDefault(startLoc, left) {
const node = super.parseMaybeDefault(startLoc, left);
if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) {
this.raise(TSErrors.TypeAnnotationAfterAssign, {
at: node.typeAnnotation
});
}
return node;
}
getTokenFromCode(code) {
if (this.state.inType) {
if (code === 62) {
this.finishOp(48, 1);
return;
}
if (code === 60) {
this.finishOp(47, 1);
return;
}
}
super.getTokenFromCode(code);
}
reScan_lt_gt() {
const {
type
} = this.state;
if (type === 47) {
this.state.pos -= 1;
this.readToken_lt();
} else if (type === 48) {
this.state.pos -= 1;
this.readToken_gt();
}
}
reScan_lt() {
const {
type
} = this.state;
if (type === 51) {
this.state.pos -= 2;
this.finishOp(47, 1);
return 47;
}
return type;
}
toAssignableList(exprList, trailingCommaLoc, isLHS) {
for (let i = 0; i < exprList.length; i++) {
const expr = exprList[i];
if ((expr == null ? void 0 : expr.type) === "TSTypeCastExpression") {
exprList[i] = this.typeCastToParameter(expr);
}
}
super.toAssignableList(exprList, trailingCommaLoc, isLHS);
}
typeCastToParameter(node) {
node.expression.typeAnnotation = node.typeAnnotation;
this.resetEndLocation(node.expression, node.typeAnnotation.loc.end);
return node.expression;
}
shouldParseArrow(params) {
if (this.match(14)) {
return params.every(expr => this.isAssignable(expr, true));
}
return super.shouldParseArrow(params);
}
shouldParseAsyncArrow() {
return this.match(14) || super.shouldParseAsyncArrow();
}
canHaveLeadingDecorator() {
return super.canHaveLeadingDecorator() || this.isAbstractClass();
}
jsxParseOpeningElementAfterName(node) {
if (this.match(47) || this.match(51)) {
const typeArguments = this.tsTryParseAndCatch(() => this.tsParseTypeArgumentsInExpression());
if (typeArguments) node.typeParameters = typeArguments;
}
return super.jsxParseOpeningElementAfterName(node);
}
getGetterSetterExpectedParamCount(method) {
const baseCount = super.getGetterSetterExpectedParamCount(method);
const params = this.getObjectOrClassMethodParams(method);
const firstParam = params[0];
const hasContextParam = firstParam && this.isThisParam(firstParam);
return hasContextParam ? baseCount + 1 : baseCount;
}
parseCatchClauseParam() {
const param = super.parseCatchClauseParam();
const type = this.tsTryParseTypeAnnotation();
if (type) {
param.typeAnnotation = type;
this.resetEndLocation(param);
}
return param;
}
tsInAmbientContext(cb) {
const oldIsAmbientContext = this.state.isAmbientContext;
this.state.isAmbientContext = true;
try {
return cb();
} finally {
this.state.isAmbientContext = oldIsAmbientContext;
}
}
parseClass(node, isStatement, optionalId) {
const oldInAbstractClass = this.state.inAbstractClass;
this.state.inAbstractClass = !!node.abstract;
try {
return super.parseClass(node, isStatement, optionalId);
} finally {
this.state.inAbstractClass = oldInAbstractClass;
}
}
tsParseAbstractDeclaration(node, decorators) {
if (this.match(80)) {
node.abstract = true;
return this.maybeTakeDecorators(decorators, this.parseClass(node, true, false));
} else if (this.isContextual(127)) {
if (!this.hasFollowingLineBreak()) {
node.abstract = true;
this.raise(TSErrors.NonClassMethodPropertyHasAbstractModifer, {
at: node
});
return this.tsParseInterfaceDeclaration(node);
}
} else {
this.unexpected(null, 80);
}
}
parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope) {
const method = super.parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope);
if (method.abstract) {
const hasBody = this.hasPlugin("estree") ? !!method.value.body : !!method.body;
if (hasBody) {
const {
key
} = method;
this.raise(TSErrors.AbstractMethodHasImplementation, {
at: method,
methodName: key.type === "Identifier" && !method.computed ? key.name : `[${this.input.slice(key.start, key.end)}]`
});
}
}
return method;
}
tsParseTypeParameterName() {
const typeName = this.parseIdentifier();
return typeName.name;
}
shouldParseAsAmbientContext() {
return !!this.getPluginOption("typescript", "dts");
}
parse() {
if (this.shouldParseAsAmbientContext()) {
this.state.isAmbientContext = true;
}
return super.parse();
}
getExpression() {
if (this.shouldParseAsAmbientContext()) {
this.state.isAmbientContext = true;
}
return super.getExpression();
}
parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly) {
if (!isString && isMaybeTypeOnly) {
this.parseTypeOnlyImportExportSpecifier(node, false, isInTypeExport);
return this.finishNode(node, "ExportSpecifier");
}
node.exportKind = "value";
return super.parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly);
}
parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, bindingType) {
if (!importedIsString && isMaybeTypeOnly) {
this.parseTypeOnlyImportExportSpecifier(specifier, true, isInTypeOnlyImport);
return this.finishNode(specifier, "ImportSpecifier");
}
specifier.importKind = "value";
return super.parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, isInTypeOnlyImport ? _scopeflags.BIND_TS_TYPE_IMPORT : _scopeflags.BIND_FLAGS_TS_IMPORT);
}
parseTypeOnlyImportExportSpecifier(node, isImport, isInTypeOnlyImportExport) {
const leftOfAsKey = isImport ? "imported" : "local";
const rightOfAsKey = isImport ? "local" : "exported";
let leftOfAs = node[leftOfAsKey];
let rightOfAs;
let hasTypeSpecifier = false;
let canParseAsKeyword = true;
const loc = leftOfAs.loc.start;
if (this.isContextual(93)) {
const firstAs = this.parseIdentifier();
if (this.isContextual(93)) {
const secondAs = this.parseIdentifier();
if ((0, _types.tokenIsKeywordOrIdentifier)(this.state.type)) {
hasTypeSpecifier = true;
leftOfAs = firstAs;
rightOfAs = isImport ? this.parseIdentifier() : this.parseModuleExportName();
canParseAsKeyword = false;
} else {
rightOfAs = secondAs;
canParseAsKeyword = false;
}
} else if ((0, _types.tokenIsKeywordOrIdentifier)(this.state.type)) {
canParseAsKeyword = false;
rightOfAs = isImport ? this.parseIdentifier() : this.parseModuleExportName();
} else {
hasTypeSpecifier = true;
leftOfAs = firstAs;
}
} else if ((0, _types.tokenIsKeywordOrIdentifier)(this.state.type)) {
hasTypeSpecifier = true;
if (isImport) {
leftOfAs = this.parseIdentifier(true);
if (!this.isContextual(93)) {
this.checkReservedWord(leftOfAs.name, leftOfAs.loc.start, true, true);
}
} else {
leftOfAs = this.parseModuleExportName();
}
}
if (hasTypeSpecifier && isInTypeOnlyImportExport) {
this.raise(isImport ? TSErrors.TypeModifierIsUsedInTypeImports : TSErrors.TypeModifierIsUsedInTypeExports, {
at: loc
});
}
node[leftOfAsKey] = leftOfAs;
node[rightOfAsKey] = rightOfAs;
const kindKey = isImport ? "importKind" : "exportKind";
node[kindKey] = hasTypeSpecifier ? "type" : "value";
if (canParseAsKeyword && this.eatContextual(93)) {
node[rightOfAsKey] = isImport ? this.parseIdentifier() : this.parseModuleExportName();
}
if (!node[rightOfAsKey]) {
node[rightOfAsKey] = (0, _node.cloneIdentifier)(node[leftOfAsKey]);
}
if (isImport) {
this.checkIdentifier(node[rightOfAsKey], hasTypeSpecifier ? _scopeflags.BIND_TS_TYPE_IMPORT : _scopeflags.BIND_FLAGS_TS_IMPORT);
}
}
};
exports.default = _default;
function isPossiblyLiteralEnum(expression) {
if (expression.type !== "MemberExpression") return false;
const {
computed,
property
} = expression;
if (computed && property.type !== "StringLiteral" && (property.type !== "TemplateLiteral" || property.expressions.length > 0)) {
return false;
}
return isUncomputedMemberExpressionChain(expression.object);
}
function isValidAmbientConstInitializer(expression, estree) {
var _expression$extra;
const {
type
} = expression;
if ((_expression$extra = expression.extra) != null && _expression$extra.parenthesized) {
return false;
}
if (estree) {
if (type === "Literal") {
const {
value
} = expression;
if (typeof value === "string" || typeof value === "boolean") {
return true;
}
}
} else {
if (type === "StringLiteral" || type === "BooleanLiteral") {
return true;
}
}
if (isNumber(expression, estree) || isNegativeNumber(expression, estree)) {
return true;
}
if (type === "TemplateLiteral" && expression.expressions.length === 0) {
return true;
}
if (isPossiblyLiteralEnum(expression)) {
return true;
}
return false;
}
function isNumber(expression, estree) {
if (estree) {
return expression.type === "Literal" && (typeof expression.value === "number" || "bigint" in expression);
}
return expression.type === "NumericLiteral" || expression.type === "BigIntLiteral";
}
function isNegativeNumber(expression, estree) {
if (expression.type === "UnaryExpression") {
const {
operator,
argument
} = expression;
if (operator === "-" && isNumber(argument, estree)) {
return true;
}
}
return false;
}
function isUncomputedMemberExpressionChain(expression) {
if (expression.type === "Identifier") return true;
if (expression.type !== "MemberExpression" || expression.computed) {
return false;
}
return isUncomputedMemberExpressionChain(expression.object);
}
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