Function isThislessInterface

test/fixtures/snapshot/typescript.js:57323–57348

* Returns true if the interface given by the symbol is free of "this" references. * * Specifically, the result is true if the interface itself contains no references * to "this" in its body, if all base types are interfaces, * and if none of the base interfaces ha

(symbol)

         * and if none of the base interfaces have a "this" type.
         */
        function isThislessInterface(symbol) {
            if (!symbol.declarations) {
                return true;
            }
            for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) {
                var declaration = _a[_i];
                if (declaration.kind === 258 /* SyntaxKind.InterfaceDeclaration */) {
                    if (declaration.flags & 128 /* NodeFlags.ContainsThis */) {
                        return false;
                    }
                    var baseTypeNodes = ts.getInterfaceBaseTypeNodes(declaration);
                    if (baseTypeNodes) {
                        for (var _b = 0, baseTypeNodes_1 = baseTypeNodes; _b < baseTypeNodes_1.length; _b++) {
                            var node = baseTypeNodes_1[_b];
                            if (ts.isEntityNameExpression(node.expression)) {
                                var baseSymbol = resolveEntityName(node.expression, 788968 /* SymbolFlags.Type */, /*ignoreErrors*/ true);
                                if (!baseSymbol || !(baseSymbol.flags & 64 /* SymbolFlags.Interface */) || getDeclaredTypeOfClassOrInterface(baseSymbol).thisType) {
                                    return false;
                                }
                            }
                        }
                    }
                }
            }
            return true;
        }
        function getDeclaredTypeOfClassOrInterface(symbol) {
            var links = getSymbolLinks(symbol);
            var originalLinks = links;