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JavaScript
import ts9 from 'typescript';
// src/comments.ts
function forEachToken(node, callback, sourceFile = node.getSourceFile()) {
const queue = [];
while (true) {
if (ts9.isTokenKind(node.kind)) {
callback(node);
} else if (
// eslint-disable-next-line deprecation/deprecation -- need for support of TS < 4.7
node.kind !== ts9.SyntaxKind.JSDocComment
) {
const children = node.getChildren(sourceFile);
if (children.length === 1) {
node = children[0];
continue;
}
for (let i = children.length - 1; i >= 0; --i) {
queue.push(children[i]);
}
}
if (queue.length === 0) {
break;
}
node = queue.pop();
}
}
// src/comments.ts
function canHaveTrailingTrivia(token) {
switch (token.kind) {
case ts9.SyntaxKind.CloseBraceToken:
return token.parent.kind !== ts9.SyntaxKind.JsxExpression || !isJsxElementOrFragment(token.parent.parent);
case ts9.SyntaxKind.GreaterThanToken:
switch (token.parent.kind) {
case ts9.SyntaxKind.JsxOpeningElement:
return token.end !== token.parent.end;
case ts9.SyntaxKind.JsxOpeningFragment:
return false;
// would be inside the fragment
case ts9.SyntaxKind.JsxSelfClosingElement:
return token.end !== token.parent.end || // if end is not equal, this is part of the type arguments list
!isJsxElementOrFragment(token.parent.parent);
// there's only trailing trivia if it's the end of the top element
case ts9.SyntaxKind.JsxClosingElement:
case ts9.SyntaxKind.JsxClosingFragment:
return !isJsxElementOrFragment(token.parent.parent.parent);
}
}
return true;
}
function isJsxElementOrFragment(node) {
return node.kind === ts9.SyntaxKind.JsxElement || node.kind === ts9.SyntaxKind.JsxFragment;
}
function forEachComment(node, callback, sourceFile = node.getSourceFile()) {
const fullText = sourceFile.text;
const notJsx = sourceFile.languageVariant !== ts9.LanguageVariant.JSX;
return forEachToken(
node,
(token) => {
if (token.pos === token.end) {
return;
}
if (token.kind !== ts9.SyntaxKind.JsxText) {
ts9.forEachLeadingCommentRange(
fullText,
// skip shebang at position 0
token.pos === 0 ? (ts9.getShebang(fullText) ?? "").length : token.pos,
commentCallback
);
}
if (notJsx || canHaveTrailingTrivia(token)) {
return ts9.forEachTrailingCommentRange(
fullText,
token.end,
commentCallback
);
}
},
sourceFile
);
function commentCallback(pos, end, kind) {
callback(fullText, { end, kind, pos });
}
}
function isCompilerOptionEnabled(options, option) {
switch (option) {
case "stripInternal":
case "declarationMap":
case "emitDeclarationOnly":
return options[option] === true && isCompilerOptionEnabled(options, "declaration");
case "declaration":
return options.declaration || isCompilerOptionEnabled(options, "composite");
case "incremental":
return options.incremental === void 0 ? isCompilerOptionEnabled(options, "composite") : options.incremental;
case "skipDefaultLibCheck":
return options.skipDefaultLibCheck || isCompilerOptionEnabled(options, "skipLibCheck");
case "suppressImplicitAnyIndexErrors":
return options.suppressImplicitAnyIndexErrors === true && isCompilerOptionEnabled(options, "noImplicitAny");
case "allowSyntheticDefaultImports":
return options.allowSyntheticDefaultImports !== void 0 ? options.allowSyntheticDefaultImports : isCompilerOptionEnabled(options, "esModuleInterop") || options.module === ts9.ModuleKind.System;
case "noUncheckedIndexedAccess":
return options.noUncheckedIndexedAccess === true && isCompilerOptionEnabled(options, "strictNullChecks");
case "allowJs":
return options.allowJs === void 0 ? isCompilerOptionEnabled(options, "checkJs") : options.allowJs;
case "noImplicitAny":
case "noImplicitThis":
case "strictNullChecks":
case "strictFunctionTypes":
case "strictPropertyInitialization":
case "alwaysStrict":
case "strictBindCallApply":
return isStrictCompilerOptionEnabled(
options,
option
);
}
return options[option] === true;
}
function isStrictCompilerOptionEnabled(options, option) {
return (options.strict ? options[option] !== false : options[option] === true) && (option !== "strictPropertyInitialization" || isStrictCompilerOptionEnabled(options, "strictNullChecks"));
}
function isFlagSet(allFlags, flag) {
return (allFlags & flag) !== 0;
}
function isFlagSetOnObject(obj, flag) {
return isFlagSet(obj.flags, flag);
}
function isModifierFlagSet(node, flag) {
return isFlagSet(ts9.getCombinedModifierFlags(node), flag);
}
var isNodeFlagSet = isFlagSetOnObject;
function isObjectFlagSet(objectType, flag) {
return isFlagSet(objectType.objectFlags, flag);
}
var isSymbolFlagSet = isFlagSetOnObject;
function isTransientSymbolLinksFlagSet(links, flag) {
return isFlagSet(links.checkFlags, flag);
}
var isTypeFlagSet = isFlagSetOnObject;
// src/modifiers.ts
function includesModifier(modifiers, ...kinds) {
if (modifiers === void 0) {
return false;
}
for (const modifier of modifiers) {
if (kinds.includes(modifier.kind)) {
return true;
}
}
return false;
}
function isAssignmentKind(kind) {
return kind >= ts9.SyntaxKind.FirstAssignment && kind <= ts9.SyntaxKind.LastAssignment;
}
function isNumericPropertyName(name) {
return String(+name) === name;
}
function charSize(ch) {
return ch >= 65536 ? 2 : 1;
}
function isValidPropertyAccess(text, languageVersion = ts9.ScriptTarget.Latest) {
if (text.length === 0) {
return false;
}
let ch = text.codePointAt(0);
if (!ts9.isIdentifierStart(ch, languageVersion)) {
return false;
}
for (let i = charSize(ch); i < text.length; i += charSize(ch)) {
ch = text.codePointAt(i);
if (!ts9.isIdentifierPart(ch, languageVersion)) {
return false;
}
}
return true;
}
// src/nodes/access.ts
var AccessKind = /* @__PURE__ */ ((AccessKind2) => {
AccessKind2[AccessKind2["None"] = 0] = "None";
AccessKind2[AccessKind2["Read"] = 1] = "Read";
AccessKind2[AccessKind2["Write"] = 2] = "Write";
AccessKind2[AccessKind2["Delete"] = 4] = "Delete";
AccessKind2[AccessKind2["ReadWrite"] = 3] = "ReadWrite";
return AccessKind2;
})(AccessKind || {});
function getAccessKind(node) {
const parent = node.parent;
switch (parent.kind) {
case ts9.SyntaxKind.DeleteExpression:
return 4 /* Delete */;
case ts9.SyntaxKind.PostfixUnaryExpression:
return 3 /* ReadWrite */;
case ts9.SyntaxKind.PrefixUnaryExpression:
return parent.operator === ts9.SyntaxKind.PlusPlusToken || parent.operator === ts9.SyntaxKind.MinusMinusToken ? 3 /* ReadWrite */ : 1 /* Read */;
case ts9.SyntaxKind.BinaryExpression:
return parent.right === node ? 1 /* Read */ : !isAssignmentKind(parent.operatorToken.kind) ? 1 /* Read */ : parent.operatorToken.kind === ts9.SyntaxKind.EqualsToken ? 2 /* Write */ : 3 /* ReadWrite */;
case ts9.SyntaxKind.ShorthandPropertyAssignment:
return parent.objectAssignmentInitializer === node ? 1 /* Read */ : isInDestructuringAssignment(parent) ? 2 /* Write */ : 1 /* Read */;
case ts9.SyntaxKind.PropertyAssignment:
return parent.name === node ? 0 /* None */ : isInDestructuringAssignment(parent) ? 2 /* Write */ : 1 /* Read */;
case ts9.SyntaxKind.ArrayLiteralExpression:
case ts9.SyntaxKind.SpreadElement:
case ts9.SyntaxKind.SpreadAssignment:
return isInDestructuringAssignment(
parent
) ? 2 /* Write */ : 1 /* Read */;
case ts9.SyntaxKind.ParenthesizedExpression:
case ts9.SyntaxKind.NonNullExpression:
case ts9.SyntaxKind.TypeAssertionExpression:
case ts9.SyntaxKind.AsExpression:
return getAccessKind(parent);
case ts9.SyntaxKind.ForOfStatement:
case ts9.SyntaxKind.ForInStatement:
return parent.initializer === node ? 2 /* Write */ : 1 /* Read */;
case ts9.SyntaxKind.ExpressionWithTypeArguments:
return parent.parent.token === ts9.SyntaxKind.ExtendsKeyword && parent.parent.parent.kind !== ts9.SyntaxKind.InterfaceDeclaration ? 1 /* Read */ : 0 /* None */;
case ts9.SyntaxKind.ComputedPropertyName:
case ts9.SyntaxKind.ExpressionStatement:
case ts9.SyntaxKind.TypeOfExpression:
case ts9.SyntaxKind.ElementAccessExpression:
case ts9.SyntaxKind.ForStatement:
case ts9.SyntaxKind.IfStatement:
case ts9.SyntaxKind.DoStatement:
case ts9.SyntaxKind.WhileStatement:
case ts9.SyntaxKind.SwitchStatement:
case ts9.SyntaxKind.WithStatement:
case ts9.SyntaxKind.ThrowStatement:
case ts9.SyntaxKind.CallExpression:
case ts9.SyntaxKind.NewExpression:
case ts9.SyntaxKind.TaggedTemplateExpression:
case ts9.SyntaxKind.JsxExpression:
case ts9.SyntaxKind.Decorator:
case ts9.SyntaxKind.TemplateSpan:
case ts9.SyntaxKind.JsxOpeningElement:
case ts9.SyntaxKind.JsxSelfClosingElement:
case ts9.SyntaxKind.JsxSpreadAttribute:
case ts9.SyntaxKind.VoidExpression:
case ts9.SyntaxKind.ReturnStatement:
case ts9.SyntaxKind.AwaitExpression:
case ts9.SyntaxKind.YieldExpression:
case ts9.SyntaxKind.ConditionalExpression:
case ts9.SyntaxKind.CaseClause:
case ts9.SyntaxKind.JsxElement:
return 1 /* Read */;
case ts9.SyntaxKind.ArrowFunction:
return parent.body === node ? 1 /* Read */ : 2 /* Write */;
case ts9.SyntaxKind.PropertyDeclaration:
case ts9.SyntaxKind.VariableDeclaration:
case ts9.SyntaxKind.Parameter:
case ts9.SyntaxKind.EnumMember:
case ts9.SyntaxKind.BindingElement:
case ts9.SyntaxKind.JsxAttribute:
return parent.initializer === node ? 1 /* Read */ : 0 /* None */;
case ts9.SyntaxKind.PropertyAccessExpression:
return parent.expression === node ? 1 /* Read */ : 0 /* None */;
case ts9.SyntaxKind.ExportAssignment:
return parent.isExportEquals ? 1 /* Read */ : 0 /* None */;
}
return 0 /* None */;
}
function isInDestructuringAssignment(node) {
switch (node.kind) {
case ts9.SyntaxKind.ShorthandPropertyAssignment:
if (node.objectAssignmentInitializer !== void 0) {
return true;
}
// falls through
case ts9.SyntaxKind.PropertyAssignment:
case ts9.SyntaxKind.SpreadAssignment:
node = node.parent;
break;
case ts9.SyntaxKind.SpreadElement:
if (node.parent.kind !== ts9.SyntaxKind.ArrayLiteralExpression) {
return false;
}
node = node.parent;
}
while (true) {
switch (node.parent.kind) {
case ts9.SyntaxKind.BinaryExpression:
return node.parent.left === node && node.parent.operatorToken.kind === ts9.SyntaxKind.EqualsToken;
case ts9.SyntaxKind.ForOfStatement:
return node.parent.initializer === node;
case ts9.SyntaxKind.ArrayLiteralExpression:
case ts9.SyntaxKind.ObjectLiteralExpression:
node = node.parent;
break;
case ts9.SyntaxKind.SpreadAssignment:
case ts9.SyntaxKind.PropertyAssignment:
node = node.parent.parent;
break;
case ts9.SyntaxKind.SpreadElement:
if (node.parent.parent.kind !== ts9.SyntaxKind.ArrayLiteralExpression) {
return false;
}
node = node.parent.parent;
break;
default:
return false;
}
}
}
function isAbstractKeyword(node) {
return node.kind === ts9.SyntaxKind.AbstractKeyword;
}
function isAccessorKeyword(node) {
return node.kind === ts9.SyntaxKind.AccessorKeyword;
}
function isAnyKeyword(node) {
return node.kind === ts9.SyntaxKind.AnyKeyword;
}
function isAssertKeyword(node) {
return node.kind === ts9.SyntaxKind.AssertKeyword;
}
function isAssertsKeyword(node) {
return node.kind === ts9.SyntaxKind.AssertsKeyword;
}
function isAsyncKeyword(node) {
return node.kind === ts9.SyntaxKind.AsyncKeyword;
}
function isAwaitKeyword(node) {
return node.kind === ts9.SyntaxKind.AwaitKeyword;
}
function isBigIntKeyword(node) {
return node.kind === ts9.SyntaxKind.BigIntKeyword;
}
function isBooleanKeyword(node) {
return node.kind === ts9.SyntaxKind.BooleanKeyword;
}
function isColonToken(node) {
return node.kind === ts9.SyntaxKind.ColonToken;
}
function isConstKeyword(node) {
return node.kind === ts9.SyntaxKind.ConstKeyword;
}
function isDeclareKeyword(node) {
return node.kind === ts9.SyntaxKind.DeclareKeyword;
}
function isDefaultKeyword(node) {
return node.kind === ts9.SyntaxKind.DefaultKeyword;
}
function isDotToken(node) {
return node.kind === ts9.SyntaxKind.DotToken;
}
function isEndOfFileToken(node) {
return node.kind === ts9.SyntaxKind.EndOfFileToken;
}
function isEqualsGreaterThanToken(node) {
return node.kind === ts9.SyntaxKind.EqualsGreaterThanToken;
}
function isEqualsToken(node) {
return node.kind === ts9.SyntaxKind.EqualsToken;
}
function isExclamationToken(node) {
return node.kind === ts9.SyntaxKind.ExclamationToken;
}
function isExportKeyword(node) {
return node.kind === ts9.SyntaxKind.ExportKeyword;
}
function isFalseKeyword(node) {
return node.kind === ts9.SyntaxKind.FalseKeyword;
}
function isFalseLiteral(node) {
return node.kind === ts9.SyntaxKind.FalseKeyword;
}
function isImportExpression(node) {
return node.kind === ts9.SyntaxKind.ImportKeyword;
}
function isImportKeyword(node) {
return node.kind === ts9.SyntaxKind.ImportKeyword;
}
function isInKeyword(node) {
return node.kind === ts9.SyntaxKind.InKeyword;
}
function isInputFiles(node) {
return node.kind === ts9.SyntaxKind.InputFiles;
}
function isJSDocText(node) {
return node.kind === ts9.SyntaxKind.JSDocText;
}
function isJsonMinusNumericLiteral(node) {
return node.kind === ts9.SyntaxKind.PrefixUnaryExpression;
}
function isNeverKeyword(node) {
return node.kind === ts9.SyntaxKind.NeverKeyword;
}
function isNullKeyword(node) {
return node.kind === ts9.SyntaxKind.NullKeyword;
}
function isNullLiteral(node) {
return node.kind === ts9.SyntaxKind.NullKeyword;
}
function isNumberKeyword(node) {
return node.kind === ts9.SyntaxKind.NumberKeyword;
}
function isObjectKeyword(node) {
return node.kind === ts9.SyntaxKind.ObjectKeyword;
}
function isOutKeyword(node) {
return node.kind === ts9.SyntaxKind.OutKeyword;
}
function isOverrideKeyword(node) {
return node.kind === ts9.SyntaxKind.OverrideKeyword;
}
function isPrivateKeyword(node) {
return node.kind === ts9.SyntaxKind.PrivateKeyword;
}
function isProtectedKeyword(node) {
return node.kind === ts9.SyntaxKind.ProtectedKeyword;
}
function isPublicKeyword(node) {
return node.kind === ts9.SyntaxKind.PublicKeyword;
}
function isQuestionDotToken(node) {
return node.kind === ts9.SyntaxKind.QuestionDotToken;
}
function isQuestionToken(node) {
return node.kind === ts9.SyntaxKind.QuestionToken;
}
function isReadonlyKeyword(node) {
return node.kind === ts9.SyntaxKind.ReadonlyKeyword;
}
function isStaticKeyword(node) {
return node.kind === ts9.SyntaxKind.StaticKeyword;
}
function isStringKeyword(node) {
return node.kind === ts9.SyntaxKind.StringKeyword;
}
function isSuperExpression(node) {
return node.kind === ts9.SyntaxKind.SuperKeyword;
}
function isSuperKeyword(node) {
return node.kind === ts9.SyntaxKind.SuperKeyword;
}
function isSymbolKeyword(node) {
return node.kind === ts9.SyntaxKind.SymbolKeyword;
}
function isSyntaxList(node) {
return node.kind === ts9.SyntaxKind.SyntaxList;
}
function isThisExpression(node) {
return node.kind === ts9.SyntaxKind.ThisKeyword;
}
function isThisKeyword(node) {
return node.kind === ts9.SyntaxKind.ThisKeyword;
}
function isTrueKeyword(node) {
return node.kind === ts9.SyntaxKind.TrueKeyword;
}
function isTrueLiteral(node) {
return node.kind === ts9.SyntaxKind.TrueKeyword;
}
function isUndefinedKeyword(node) {
return node.kind === ts9.SyntaxKind.UndefinedKeyword;
}
function isUnknownKeyword(node) {
return node.kind === ts9.SyntaxKind.UnknownKeyword;
}
function isUnparsedPrologue(node) {
return node.kind === ts9.SyntaxKind.UnparsedPrologue;
}
function isUnparsedSyntheticReference(node) {
return node.kind === ts9.SyntaxKind.UnparsedSyntheticReference;
}
function isVoidKeyword(node) {
return node.kind === ts9.SyntaxKind.VoidKeyword;
}
var [tsMajor, tsMinor] = ts9.versionMajorMinor.split(".").map((raw) => Number.parseInt(raw, 10));
function isTsVersionAtLeast(major, minor = 0) {
return tsMajor > major || tsMajor === major && tsMinor >= minor;
}
// src/nodes/typeGuards/union.ts
function isAccessExpression(node) {
return ts9.isPropertyAccessExpression(node) || ts9.isElementAccessExpression(node);
}
function isAccessibilityModifier(node) {
return isPublicKeyword(node) || isPrivateKeyword(node) || isProtectedKeyword(node);
}
function isAccessorDeclaration(node) {
return ts9.isGetAccessorDeclaration(node) || ts9.isSetAccessorDeclaration(node);
}
function isArrayBindingElement(node) {
return ts9.isBindingElement(node) || ts9.isOmittedExpression(node);
}
function isArrayBindingOrAssignmentPattern(node) {
return ts9.isArrayBindingPattern(node) || ts9.isArrayLiteralExpression(node);
}
function isAssignmentPattern(node) {
return ts9.isObjectLiteralExpression(node) || ts9.isArrayLiteralExpression(node);
}
function isBindingOrAssignmentElementRestIndicator(node) {
if (ts9.isSpreadElement(node) || ts9.isSpreadAssignment(node)) {
return true;
}
if (isTsVersionAtLeast(4, 4)) {
return ts9.isDotDotDotToken(node);
}
return false;
}
function isBindingOrAssignmentElementTarget(node) {
return isBindingOrAssignmentPattern(node) || ts9.isIdentifier(node) || ts9.isPropertyAccessExpression(node) || ts9.isElementAccessExpression(node) || ts9.isOmittedExpression(node);
}
function isBindingOrAssignmentPattern(node) {
return isObjectBindingOrAssignmentPattern(node) || isArrayBindingOrAssignmentPattern(node);
}
function isBindingPattern(node) {
return ts9.isObjectBindingPattern(node) || ts9.isArrayBindingPattern(node);
}
function isBlockLike(node) {
return ts9.isSourceFile(node) || ts9.isBlock(node) || ts9.isModuleBlock(node) || ts9.isCaseOrDefaultClause(node);
}
function isBooleanLiteral(node) {
return isTrueLiteral(node) || isFalseLiteral(node);
}
function isClassLikeDeclaration(node) {
return ts9.isClassDeclaration(node) || ts9.isClassExpression(node);
}
function isClassMemberModifier(node) {
return isAccessibilityModifier(node) || isReadonlyKeyword(node) || isStaticKeyword(node) || isAccessorKeyword(node);
}
function isDeclarationName(node) {
return ts9.isIdentifier(node) || ts9.isPrivateIdentifier(node) || ts9.isStringLiteralLike(node) || ts9.isNumericLiteral(node) || ts9.isComputedPropertyName(node) || ts9.isElementAccessExpression(node) || isBindingPattern(node) || isEntityNameExpression(node);
}
function isDeclarationWithTypeParameterChildren(node) {
return isSignatureDeclaration(node) || // eslint-disable-next-line deprecation/deprecation -- Keep compatibility with ts <5
isClassLikeDeclaration(node) || ts9.isInterfaceDeclaration(node) || ts9.isTypeAliasDeclaration(node) || ts9.isJSDocTemplateTag(node);
}
function isDeclarationWithTypeParameters(node) {
return isDeclarationWithTypeParameterChildren(node) || ts9.isJSDocTypedefTag(node) || ts9.isJSDocCallbackTag(node) || ts9.isJSDocSignature(node);
}
function isDestructuringPattern(node) {
return isBindingPattern(node) || ts9.isObjectLiteralExpression(node) || ts9.isArrayLiteralExpression(node);
}
function isEntityNameExpression(node) {
return ts9.isIdentifier(node) || isPropertyAccessEntityNameExpression(node);
}
function isEntityNameOrEntityNameExpression(node) {
return ts9.isEntityName(node) || isEntityNameExpression(node);
}
function isForInOrOfStatement(node) {
return ts9.isForInStatement(node) || ts9.isForOfStatement(node);
}
function isFunctionLikeDeclaration(node) {
return ts9.isFunctionDeclaration(node) || ts9.isMethodDeclaration(node) || ts9.isGetAccessorDeclaration(node) || ts9.isSetAccessorDeclaration(node) || ts9.isConstructorDeclaration(node) || ts9.isFunctionExpression(node) || ts9.isArrowFunction(node);
}
function hasDecorators(node) {
return ts9.isParameter(node) || ts9.isPropertyDeclaration(node) || ts9.isMethodDeclaration(node) || ts9.isGetAccessorDeclaration(node) || ts9.isSetAccessorDeclaration(node) || ts9.isClassExpression(node) || ts9.isClassDeclaration(node);
}
function hasExpressionInitializer(node) {
return ts9.isVariableDeclaration(node) || ts9.isParameter(node) || ts9.isBindingElement(node) || ts9.isPropertyDeclaration(node) || ts9.isPropertyAssignment(node) || ts9.isEnumMember(node);
}
function hasInitializer(node) {
return hasExpressionInitializer(node) || ts9.isForStatement(node) || ts9.isForInStatement(node) || ts9.isForOfStatement(node) || ts9.isJsxAttribute(node);
}
function hasJSDoc(node) {
if (
// eslint-disable-next-line deprecation/deprecation -- Keep compatibility with ts <5
isAccessorDeclaration(node) || ts9.isArrowFunction(node) || ts9.isBlock(node) || ts9.isBreakStatement(node) || ts9.isCallSignatureDeclaration(node) || ts9.isCaseClause(node) || // eslint-disable-next-line deprecation/deprecation -- Keep compatibility with ts <5
isClassLikeDeclaration(node) || ts9.isConstructorDeclaration(node) || ts9.isConstructorTypeNode(node) || ts9.isConstructSignatureDeclaration(node) || ts9.isContinueStatement(node) || ts9.isDebuggerStatement(node) || ts9.isDoStatement(node) || ts9.isEmptyStatement(node) || isEndOfFileToken(node) || ts9.isEnumDeclaration(node) || ts9.isEnumMember(node) || ts9.isExportAssignment(node) || ts9.isExportDeclaration(node) || ts9.isExportSpecifier(node) || ts9.isExpressionStatement(node) || ts9.isForInStatement(node) || ts9.isForOfStatement(node) || ts9.isForStatement(node) || ts9.isFunctionDeclaration(node) || ts9.isFunctionExpression(node) || ts9.isFunctionTypeNode(node) || ts9.isIfStatement(node) || ts9.isImportDeclaration(node) || ts9.isImportEqualsDeclaration(node) || ts9.isIndexSignatureDeclaration(node) || ts9.isInterfaceDeclaration(node) || ts9.isJSDocFunctionType(node) || ts9.isLabeledStatement(node) || ts9.isMethodDeclaration(node) || ts9.isMethodSignature(node) || ts9.isModuleDeclaration(node) || ts9.isNamedTupleMember(node) || ts9.isNamespaceExportDeclaration(node) || ts9.isParameter(node) || ts9.isParenthesizedExpression(node) || ts9.isPropertyAssignment(node) || ts9.isPropertyDeclaration(node) || ts9.isPropertySignature(node) || ts9.isReturnStatement(node) || ts9.isShorthandPropertyAssignment(node) || ts9.isSpreadAssignment(node) || ts9.isSwitchStatement(node) || ts9.isThrowStatement(node) || ts9.isTryStatement(node) || ts9.isTypeAliasDeclaration(node) || ts9.isVariableDeclaration(node) || ts9.isVariableStatement(node) || ts9.isWhileStatement(node) || ts9.isWithStatement(node)
) {
return true;
}
if (isTsVersionAtLeast(4, 4) && ts9.isClassStaticBlockDeclaration(node)) {
return true;
}
if (isTsVersionAtLeast(5, 0) && (ts9.isBinaryExpression(node) || ts9.isElementAccessExpression(node) || ts9.isIdentifier(node) || ts9.isJSDocSignature(node) || ts9.isObjectLiteralExpression(node) || ts9.isPropertyAccessExpression(node) || ts9.isTypeParameterDeclaration(node))) {
return true;
}
return false;
}
function hasModifiers(node) {
return ts9.isTypeParameterDeclaration(node) || ts9.isParameter(node) || ts9.isConstructorTypeNode(node) || ts9.isPropertySignature(node) || ts9.isPropertyDeclaration(node) || ts9.isMethodSignature(node) || ts9.isMethodDeclaration(node) || ts9.isConstructorDeclaration(node) || ts9.isGetAccessorDeclaration(node) || ts9.isSetAccessorDeclaration(node) || ts9.isIndexSignatureDeclaration(node) || ts9.isFunctionExpression(node) || ts9.isArrowFunction(node) || ts9.isClassExpression(node) || ts9.isVariableStatement(node) || ts9.isFunctionDeclaration(node) || ts9.isClassDeclaration(node) || ts9.isInterfaceDeclaration(node) || ts9.isTypeAliasDeclaration(node) || ts9.isEnumDeclaration(node) || ts9.isModuleDeclaration(node) || ts9.isImportEqualsDeclaration(node) || ts9.isImportDeclaration(node) || ts9.isExportAssignment(node) || ts9.isExportDeclaration(node);
}
function hasType(node) {
return isSignatureDeclaration(node) || ts9.isVariableDeclaration(node) || ts9.isParameter(node) || ts9.isPropertySignature(node) || ts9.isPropertyDeclaration(node) || ts9.isTypePredicateNode(node) || ts9.isParenthesizedTypeNode(node) || ts9.isTypeOperatorNode(node) || ts9.isMappedTypeNode(node) || ts9.isAssertionExpression(node) || ts9.isTypeAliasDeclaration(node) || ts9.isJSDocTypeExpression(node) || ts9.isJSDocNonNullableType(node) || ts9.isJSDocNullableType(node) || ts9.isJSDocOptionalType(node) || ts9.isJSDocVariadicType(node);
}
function hasTypeArguments(node) {
return ts9.isCallExpression(node) || ts9.isNewExpression(node) || ts9.isTaggedTemplateExpression(node) || ts9.isJsxOpeningElement(node) || ts9.isJsxSelfClosingElement(node);
}
function isJSDocComment(node) {
if (isJSDocText(node)) {
return true;
}
if (isTsVersionAtLeast(4, 4)) {
return ts9.isJSDocLink(node) || ts9.isJSDocLinkCode(node) || ts9.isJSDocLinkPlain(node);
}
return false;
}
function isJSDocNamespaceBody(node) {
return ts9.isIdentifier(node) || isJSDocNamespaceDeclaration(node);
}
function isJSDocTypeReferencingNode(node) {
return ts9.isJSDocVariadicType(node) || ts9.isJSDocOptionalType(node) || ts9.isJSDocNullableType(node) || ts9.isJSDocNonNullableType(node);
}
function isJsonObjectExpression(node) {
return ts9.isObjectLiteralExpression(node) || ts9.isArrayLiteralExpression(node) || isJsonMinusNumericLiteral(node) || ts9.isNumericLiteral(node) || ts9.isStringLiteral(node) || isBooleanLiteral(node) || isNullLiteral(node);
}
function isJsxAttributeLike(node) {
return ts9.isJsxAttribute(node) || ts9.isJsxSpreadAttribute(node);
}
function isJsxAttributeValue(node) {
return ts9.isStringLiteral(node) || ts9.isJsxExpression(node) || ts9.isJsxElement(node) || ts9.isJsxSelfClosingElement(node) || ts9.isJsxFragment(node);
}
function isJsxChild(node) {
return ts9.isJsxText(node) || ts9.isJsxExpression(node) || ts9.isJsxElement(node) || ts9.isJsxSelfClosingElement(node) || ts9.isJsxFragment(node);
}
function isJsxTagNameExpression(node) {
return ts9.isIdentifier(node) || isThisExpression(node) || isJsxTagNamePropertyAccess(node);
}
function isLiteralToken(node) {
return ts9.isNumericLiteral(node) || ts9.isBigIntLiteral(node) || ts9.isStringLiteral(node) || ts9.isJsxText(node) || ts9.isRegularExpressionLiteral(node) || ts9.isNoSubstitutionTemplateLiteral(node);
}
function isModuleBody(node) {
return isNamespaceBody(node) || isJSDocNamespaceBody(node);
}
function isModuleName(node) {
return ts9.isIdentifier(node) || ts9.isStringLiteral(node);
}
function isModuleReference(node) {
return ts9.isEntityName(node) || ts9.isExternalModuleReference(node);
}
function isNamedImportBindings(node) {
return ts9.isNamespaceImport(node) || ts9.isNamedImports(node);
}
function isNamedImportsOrExports(node) {
return ts9.isNamedImports(node) || ts9.isNamedExports(node);
}
function isNamespaceBody(node) {
return ts9.isModuleBlock(node) || isNamespaceDeclaration(node);
}
function isObjectBindingOrAssignmentElement(node) {
return ts9.isBindingElement(node) || ts9.isPropertyAssignment(node) || ts9.isShorthandPropertyAssignment(node) || ts9.isSpreadAssignment(node);
}
function isObjectBindingOrAssignmentPattern(node) {
return ts9.isObjectBindingPattern(node) || ts9.isObjectLiteralExpression(node);
}
function isObjectTypeDeclaration(node) {
return (
// eslint-disable-next-line deprecation/deprecation -- Keep compatibility with ts <5
isClassLikeDeclaration(node) || ts9.isInterfaceDeclaration(node) || ts9.isTypeLiteralNode(node)
);
}
function isParameterPropertyModifier(node) {
return isAccessibilityModifier(node) || isReadonlyKeyword(node);
}
function isPropertyNameLiteral(node) {
return ts9.isIdentifier(node) || ts9.isStringLiteralLike(node) || ts9.isNumericLiteral(node);
}
function isPseudoLiteralToken(node) {
return ts9.isTemplateHead(node) || ts9.isTemplateMiddle(node) || ts9.isTemplateTail(node);
}
function isSignatureDeclaration(node) {
return ts9.isCallSignatureDeclaration(node) || ts9.isConstructSignatureDeclaration(node) || ts9.isMethodSignature(node) || ts9.isIndexSignatureDeclaration(node) || ts9.isFunctionTypeNode(node) || ts9.isConstructorTypeNode(node) || ts9.isJSDocFunctionType(node) || ts9.isFunctionDeclaration(node) || ts9.isMethodDeclaration(node) || ts9.isConstructorDeclaration(node) || // eslint-disable-next-line deprecation/deprecation -- Keep compatibility with ts <5
isAccessorDeclaration(node) || ts9.isFunctionExpression(node) || ts9.isArrowFunction(node);
}
function isSuperProperty(node) {
return isSuperPropertyAccessExpression(node) || isSuperElementAccessExpression(node);
}
function isTypeOnlyCompatibleAliasDeclaration(node) {
if (ts9.isImportClause(node) || ts9.isImportEqualsDeclaration(node) || ts9.isNamespaceImport(node) || ts9.isImportOrExportSpecifier(node)) {
return true;
}
if (isTsVersionAtLeast(5, 0) && (ts9.isExportDeclaration(node) || ts9.isNamespaceExport(node))) {
return true;
}
return false;
}
function isTypeReferenceType(node) {
return ts9.isTypeReferenceNode(node) || ts9.isExpressionWithTypeArguments(node);
}
function isUnionOrIntersectionTypeNode(node) {
return ts9.isUnionTypeNode(node) || ts9.isIntersectionTypeNode(node);
}
function isUnparsedSourceText(node) {
return ts9.isUnparsedPrepend(node) || ts9.isUnparsedTextLike(node);
}
function isVariableLikeDeclaration(node) {
return ts9.isVariableDeclaration(node) || ts9.isParameter(node) || ts9.isBindingElement(node) || ts9.isPropertyDeclaration(node) || ts9.isPropertyAssignment(node) || ts9.isPropertySignature(node) || ts9.isJsxAttribute(node) || ts9.isShorthandPropertyAssignment(node) || ts9.isEnumMember(node) || ts9.isJSDocPropertyTag(node) || ts9.isJSDocParameterTag(node);
}
// src/nodes/typeGuards/compound.ts
function isConstAssertionExpression(node) {
return ts9.isTypeReferenceNode(node.type) && ts9.isIdentifier(node.type.typeName) && node.type.typeName.escapedText === "const";
}
function isIterationStatement(node) {
switch (node.kind) {
case ts9.SyntaxKind.DoStatement:
case ts9.SyntaxKind.ForInStatement:
case ts9.SyntaxKind.ForOfStatement:
case ts9.SyntaxKind.ForStatement:
case ts9.SyntaxKind.WhileStatement:
return true;
default:
return false;
}
}
function isJSDocNamespaceDeclaration(node) {
return ts9.isModuleDeclaration(node) && ts9.isIdentifier(node.name) && (node.body === void 0 || isJSDocNamespaceBody(node.body));
}
function isJsxTagNamePropertyAccess(node) {
return ts9.isPropertyAccessExpression(node) && // eslint-disable-next-line deprecation/deprecation -- Keep compatibility with ts < 5
isJsxTagNameExpression(node.expression);
}
function isNamedDeclarationWithName(node) {
return "name" in node && node.name !== void 0 && node.name !== null && isDeclarationName(node.name);
}
function isNamespaceDeclaration(node) {
return ts9.isModuleDeclaration(node) && ts9.isIdentifier(node.name) && node.body !== void 0 && isNamespaceBody(node.body);
}
function isNumericOrStringLikeLiteral(node) {
switch (node.kind) {
case ts9.SyntaxKind.StringLiteral:
case ts9.SyntaxKind.NumericLiteral:
case ts9.SyntaxKind.NoSubstitutionTemplateLiteral:
return true;
default:
return false;
}
}
function isPropertyAccessEntityNameExpression(node) {
return ts9.isPropertyAccessExpression(node) && ts9.isIdentifier(node.name) && isEntityNameExpression(node.expression);
}
function isSuperElementAccessExpression(node) {
return ts9.isElementAccessExpression(node) && isSuperExpression(node.expression);
}
function isSuperPropertyAccessExpression(node) {
return ts9.isPropertyAccessExpression(node) && isSuperExpression(node.expression);
}
function isFunctionScopeBoundary(node) {
switch (node.kind) {
case ts9.SyntaxKind.FunctionExpression:
case ts9.SyntaxKind.ArrowFunction:
case ts9.SyntaxKind.Constructor:
case ts9.SyntaxKind.ModuleDeclaration:
case ts9.SyntaxKind.ClassDeclaration:
case ts9.SyntaxKind.ClassExpression:
case ts9.SyntaxKind.EnumDeclaration:
case ts9.SyntaxKind.MethodDeclaration:
case ts9.SyntaxKind.FunctionDeclaration:
case ts9.SyntaxKind.GetAccessor:
case ts9.SyntaxKind.SetAccessor:
case ts9.SyntaxKind.MethodSignature:
case ts9.SyntaxKind.CallSignature:
case ts9.SyntaxKind.ConstructSignature:
case ts9.SyntaxKind.ConstructorType:
case ts9.SyntaxKind.FunctionType:
return true;
case ts9.SyntaxKind.SourceFile:
return ts9.isExternalModule(node);
default:
return false;
}
}
function isIntrinsicAnyType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Any);
}
function isIntrinsicBooleanType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Boolean);
}
function isIntrinsicBigIntType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.BigInt);
}
function isIntrinsicErrorType(type) {
return isIntrinsicType(type) && type.intrinsicName === "error";
}
function isIntrinsicESSymbolType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.ESSymbol);
}
var IntrinsicTypeFlags = ts9.TypeFlags.Intrinsic ?? ts9.TypeFlags.Any | ts9.TypeFlags.Unknown | ts9.TypeFlags.String | ts9.TypeFlags.Number | ts9.TypeFlags.BigInt | ts9.TypeFlags.Boolean | ts9.TypeFlags.BooleanLiteral | ts9.TypeFlags.ESSymbol | ts9.TypeFlags.Void | ts9.TypeFlags.Undefined | ts9.TypeFlags.Null | ts9.TypeFlags.Never | ts9.TypeFlags.NonPrimitive;
function isIntrinsicType(type) {
return isTypeFlagSet(type, IntrinsicTypeFlags);
}
function isIntrinsicNeverType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Never);
}
function isIntrinsicNonPrimitiveType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.NonPrimitive);
}
function isIntrinsicNullType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Null);
}
function isIntrinsicNumberType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Number);
}
function isIntrinsicStringType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.String);
}
function isIntrinsicUndefinedType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Undefined);
}
function isIntrinsicUnknownType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Unknown);
}
function isIntrinsicVoidType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Void);
}
function isConditionalType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Conditional);
}
function isEnumType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Enum);
}
function isFreshableType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Freshable);
}
function isIndexType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Index);
}
function isIndexedAccessType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.IndexedAccess);
}
function isInstantiableType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Instantiable);
}
function isIntersectionType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Intersection);
}
function isObjectType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Object);
}
function isStringMappingType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.StringMapping);
}
function isSubstitutionType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Substitution);
}
function isTypeParameter(type) {
return isTypeFlagSet(type, ts9.TypeFlags.TypeParameter);
}
function isTypeVariable(type) {
return isTypeFlagSet(type, ts9.TypeFlags.TypeVariable);
}
function isUnionType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Union);
}
function isUnionOrIntersectionType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.UnionOrIntersection);
}
function isUniqueESSymbolType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.UniqueESSymbol);
}
// src/types/typeGuards/objects.ts
function isEvolvingArrayType(type) {
return isObjectType(type) && isObjectFlagSet(type, ts9.ObjectFlags.EvolvingArray);
}
function isTupleType(type) {
return isObjectType(type) && isObjectFlagSet(type, ts9.ObjectFlags.Tuple);
}
function isTypeReference(type) {
return isObjectType(type) && isObjectFlagSet(type, ts9.ObjectFlags.Reference);
}
// src/types/typeGuards/compound.ts
function isFreshableIntrinsicType(type) {
return isIntrinsicType(type) && isFreshableType(type);
}
function isTupleTypeReference(type) {
return isTypeReference(type) && isTupleType(type.target);
}
function isBooleanLiteralType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.BooleanLiteral);
}
function isBigIntLiteralType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.BigIntLiteral);
}
function isFalseLiteralType(type) {
return isBooleanLiteralType(type) && type.intrinsicName === "false";
}
function isLiteralType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Literal);
}
function isNumberLiteralType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.NumberLiteral);
}
function isStringLiteralType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.StringLiteral);
}
function isTemplateLiteralType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.TemplateLiteral);
}
function isTrueLiteralType(type) {
return isBooleanLiteralType(type) && type.intrinsicName === "true";
}
function isUnknownLiteralType(type) {
return isTypeFlagSet(type, ts9.TypeFlags.Literal);
}
// src/types/getters.ts
function getCallSignaturesOfType(type) {
if (isUnionType(type)) {
const signatures = [];
for (const subType of type.types) {
signatures.push(...getCallSignaturesOfType(subType));
}
return signatures;
}
if (isIntersectionType(type)) {
let signatures;
for (const subType of type.types) {
const sig = getCallSignaturesOfType(subType);
if (sig.length !== 0) {
if (signatures !== void 0) {
return [];
}
signatures = sig;
}
}
return signatures === void 0 ? [] : signatures;
}
return type.getCallSignatures();
}
function getPropertyOfType(type, name) {
if (!name.startsWith("__")) {
return type.getProperty(name);
}
return type.getProperties().find((s) => s.escapedName === name);
}
function getWellKnownSymbolPropertyOfType(type, wellKnownSymbolName, typeChecker) {
const prefix = "__@" + wellKnownSymbolName;
for (const prop of type.getProperties()) {
if (!prop.name.startsWith(prefix)) {
continue;
}
const declaration = prop.valueDeclaration ?? prop.getDeclarations()[0];
if (!isNamedDeclarationWithName(declaration) || declaration.name === void 0 || !ts9.isComputedPropertyName(declaration.name)) {
continue;
}
const globalSymbol = typeChecker.getApparentType(
typeChecker.getTypeAtLocation(declaration.name.expression)
).symbol;
if (prop.escapedName === getPropertyNameOfWellKnownSymbol(
typeChecker,
globalSymbol,
wellKnownSymbolName
)) {
return prop;
}
}
return void 0;
}
function getPropertyNameOfWellKnownSymbol(typeChecker, symbolConstructor, symbolName) {
const knownSymbol = symbolConstructor && typeChecker.getTypeOfSymbolAtLocation(
symbolConstructor,
// eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-argument, @typescript-eslint/no-unsafe-member-access
symbolConstructor.valueDeclaration
).getProperty(symbolName);
const knownSymbolType = knownSymbol && typeChecker.getTypeOfSymbolAtLocation(
knownSymbol,
// eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-argument, @typescript-eslint/no-unsafe-member-access
knownSymbol.valueDeclaration
);
if (knownSymbolType && isUniqueESSymbolType(knownSymbolType)) {
return knownSymbolType.escapedName;
}
return "__@" + symbolName;
}
function isBindableObjectDefinePropertyCall(node) {
return node.arguments.length === 3 && isEntityNameExpression(node.arguments[0]) && isNumericOrStringLikeLiteral(node.arguments[1]) && ts9.isPropertyAccessExpression(node.expression) && node.expression.name.escapedText === "defineProperty" && ts9.isIdentifier(node.expression.expression) && node.expression.expression.escapedText === "Object";
}
function isInConstContext(node, typeChecker) {
var _a, _b;
let current = node;
while (true) {
const parent = current.parent;
outer: switch (parent.kind) {
case ts9.SyntaxKind.TypeAssertionExpression:
case ts9.SyntaxKind.AsExpression:
return isConstAssertionExpression(parent);
case ts9.SyntaxKind.PrefixUnaryExpression:
if (current.kind !== ts9.SyntaxKind.NumericLiteral) {
return false;
}
switch (parent.operator) {
case ts9.SyntaxKind.PlusToken:
case ts9.SyntaxKind.MinusToken:
current = parent;
break outer;
default:
return false;
}
case ts9.SyntaxKind.PropertyAssignment:
if (parent.initializer !== current) {
return false;
}
current = parent.parent;
break;
case ts9.SyntaxKind.ShorthandPropertyAssignment:
current = parent.parent;
break;
case ts9.SyntaxKind.ParenthesizedExpression:
case ts9.SyntaxKind.ArrayLiteralExpression:
case ts9.SyntaxKind.ObjectLiteralExpression:
case ts9.SyntaxKind.TemplateExpression:
current = parent;
break;
case ts9.SyntaxKind.CallExpression:
if (!ts9.isExpression(current)) {
return false;
}
const functionSignature = typeChecker.getResolvedSignature(
parent
);
if (functionSignature === void 0) {
return false;
}
const argumentIndex = parent.arguments.indexOf(
current
);
if (argumentIndex < 0) {
return false;
}
const parameterSymbol = functionSignature.getParameters()[argumentIndex];
if (parameterSymbol === void 0 || !("links" in parameterSymbol)) {
return false;
}
const parameterSymbolLinks = parameterSymbol.links;
const propertySymbol = (_b = (_a = parameterSymbolLinks.type) == null ? void 0 : _a.getProperties()) == null ? void 0 : _b[argumentIndex];
if (propertySymbol === void 0 || !("links" in propertySymbol)) {
return false;
}
return isTransientSymbolLinksFlagSet(
propertySymbol.links,
ts9.CheckFlags.Readonly
);
default:
return false;
}
}
}
// src/types/utilities.ts
function isFalsyType(type) {
if (isTypeFlagSet(
type,
ts9.TypeFlags.Undefined | ts9.TypeFlags.Null | ts9.TypeFlags.Void
)) {
return true;
}
if (typeIsLiteral(type)) {
if (typeof type.value === "object") {
return type.value.base10Value === "0";
} else {
return !type.value;
}
}
return isFalseLiteralType(type);
}
function intersectionTypeParts(type) {
return isIntersectionType(type) ? type.types : [type];
}
function typeParts(type) {
return isIntersectionType(type) || isUnionType(type) ? type.types : [type];
}
function isReadonlyPropertyIntersection(type, name, typeChecker) {
const typeParts2 = isIntersectionType(type) ? type.types : [type];
return typeParts2.some((subType) => {
const prop = getPropertyOfType(subType, name);
if (prop === void 0) {
return false;
}
if (prop.flags & ts9.SymbolFlags.Transient) {
if (/^(?:[1-9]\d*|0)$/.test(name) && isTupleTypeReference(subType)) {
return subType.target.readonly;
}
switch (isReadonlyPropertyFromMappedType(subType, name, typeChecker)) {
case true:
return true;
case false:
return false;
}
}
return !!// members of namespace import
(isSymbolFlagSet(prop, ts9.SymbolFlags.ValueModule) || // we unwrapped every mapped type, now we can check the actual declarations
symbolHasReadonlyDeclaration(prop, typeChecker));
});
}
function isReadonlyPropertyFromMappedType(type, name, typeChecker) {
if (!isObjectType(type) || !isObjectFlagSet(type, ts9.ObjectFlags.Mapped)) {
return;
}
const declaration = type.symbol.declarations[0];
if (declaration.readonlyToken !== void 0 && !/^__@[^@]+$/.test(name)) {
return declaration.readonlyToken.kind !== ts9.SyntaxKind.MinusToken;
}
const { modifiersType } = type;
return modifiersType && isPropertyReadonlyInType(modifiersType, name, typeChecker);
}
function isCallback(typeChecker, param, node) {
let type = typeChecker.getApparentType(
typeChecker.getTypeOfSymbolAtLocation(param, node)
);
if (param.valueDeclaration.dotDotDotToken) {
type = type.getNumberIndexType();
if (type === void 0) {
return false;
}
}
for (const subType of unionTypeParts(type)) {
if (subType.getCallSignatures().length !== 0) {
return true;
}
}
return false;
}
function isPropertyReadonlyInType(type, name, typeChecker) {
let seenProperty = false;
let seenReadonlySignature = false;
for (const subType of unionTypeParts(type)) {
if (getPropertyOfType(subType, name) === void 0) {
const index = (isNumericPropertyName(name) ? typeChecker.getIndexInfoOfType(subType, ts9.IndexKind.Number) : void 0) ?? typeChecker.getIndexInfoOfType(subType, ts9.IndexKind.String);
if (index == null ? void 0 : index.isReadonly) {
if (seenProperty) {
return true;
}
seenReadonlySignature = true;
}
} else if (seenReadonlySignature || isReadonlyPropertyIntersection(subType, name, typeChecker)) {
return true;
} else {
seenProperty = true;
}
}
return false;
}
function isReadonlyAssignmentDeclaration(node, typeChecker) {
if (!isBindableObjectDefinePropertyCall(node)) {
return false;
}
const descriptorType = typeChecker.getTypeAtLocation(node.arguments[2]);
if (descriptorType.getProperty("value") === void 0) {
return descriptorType.getProperty("set") === void 0;
}
const writableProp = descriptorType.getProperty("writable");
if (writableProp === void 0) {
return false;
}
const writableType = writableProp.valueDeclaration !== void 0 && ts9.isPropertyAssignment(writableProp.valueDeclaration) ? typeChecker.getTypeAtLocation(writableProp.valueDeclaration.initializer) : typeChecker.getTypeOfSymbolAtLocation(writableProp, node.arguments[2]);
return isFalseLiteralType(writableType);
}
function isThenableType(typeChecker, node, type = typeChecker.getTypeAtLocation(node)) {
for (const typePart of unionTypeParts(typeChecker.getApparentType(type))) {
const then = typePart.getProperty("then");
if (then === void 0) {
continue;
}
const thenType = typeChecker.getTypeOfSymbolAtLocation(then, node);
for (const subTypePart of unionTypeParts(thenType)) {
for (const signature of subTypePart.getCallSignatures()) {
if (signature.parameters.length !== 0 && isCallback(typeChecker, signature.parameters[0], node)) {
return true;
}
}
}
}
return false;
}
function symbolHasReadonlyDeclaration(symbol, typeChecker) {
var _a;
return !!((symbol.flags & ts9.SymbolFlags.Accessor) === ts9.SymbolFlags.GetAccessor || ((_a = symbol.declarations) == null ? void 0 : _a.some(
(node) => isModifierFlagSet(node, ts9.ModifierFlags.Readonly) || ts9.isVariableDeclaration(node) && isNodeFlagSet(node.parent, ts9.NodeFlags.Const) || ts9.isCallExpression(node) && isReadonlyAssignmentDeclaration(node, typeChecker) || ts9.isEnumMember(node) || (ts9.isPropertyAssignment(node) || ts9.isShorthandPropertyAssignment(node)) && isInConstContext(node, typeChecker)
)));
}
function unionTypeParts(type) {
return isUnionType(type) ? type.types : [type];
}
function typeIsLiteral(type) {
if (isTsVersionAtLeast(5, 0)) {
return type.isLiteral();
} else {
return isTypeFlagSet(
type,
ts9.TypeFlags.StringLiteral | ts9.TypeFlags.NumberLiteral | ts9.TypeFlags.BigIntLiteral
);
}
}
function isBlockScopeBoundary(node) {
switch (node.kind) {
case ts9.SyntaxKind.Block: {
const parent = node.parent;
return parent.kind !== ts9.SyntaxKind.CatchClause && // blocks inside SourceFile are block scope boundaries
(parent.kind === ts9.SyntaxKind.SourceFile || // blocks that are direct children of a function scope boundary are no scope boundary
// for example the FunctionBlock is part of the function scope of the containing function
!isFunctionScopeBoundary(parent)) ? 2 /* Block */ : 0 /* None */;
}
case ts9.SyntaxKind.ForStatement:
case ts9.SyntaxKind.ForInStatement:
case ts9.SyntaxKind.ForOfStatement:
case ts9.SyntaxKind.CaseBlock:
case ts9.SyntaxKind.CatchClause:
case ts9.SyntaxKind.WithStatement:
return 2 /* Block */;
default:
return 0 /* None */;
}
}
function identifierToKeywordKind(node) {
return "identifierToKeywordKind" in ts9 ? ts9.identifierToKeywordKind(node) : (
// eslint-disable-next-line deprecation/deprecation
node.originalKeywordKind
);
}
function canHaveDecorators(node) {
return "canHaveDecorators" in ts9 ? ts9.canHaveDecorators(node) : "decorators" in node;
}
function getDecorators(node) {
return "getDecorators" in ts9 ? ts9.getDecorators(node) : node.decorators;
}
// src/usage/declarations.ts
var DeclarationDomain = /* @__PURE__ */ ((DeclarationDomain2) => {
DeclarationDomain2[DeclarationDomain2["Import"] = 8] = "Import";
DeclarationDomain2[DeclarationDomain2["Namespace"] = 1] = "Namespace";
DeclarationDomain2[DeclarationDomain2["Type"] = 2] = "Type";
DeclarationDomain2[DeclarationDomain2["Value"] = 4] = "Value";
DeclarationDomain2[DeclarationDomain2["Any"] = 7] = "Any";
return DeclarationDomain2;
})(DeclarationDomain || {});
function getDeclarationDomain(n