Function lookupTypeParameterNodes

test/fixtures/snapshot/typescript.js:53499–53521

(chain, index, context)

                return typeParameterNodes;
            }
            function lookupTypeParameterNodes(chain, index, context) {
                var _a;
                ts.Debug.assert(chain && 0 <= index && index < chain.length);
                var symbol = chain[index];
                var symbolId = getSymbolId(symbol);
                if ((_a = context.typeParameterSymbolList) === null || _a === void 0 ? void 0 : _a.has(symbolId)) {
                    return undefined;
                }
                (context.typeParameterSymbolList || (context.typeParameterSymbolList = new ts.Set())).add(symbolId);
                var typeParameterNodes;
                if (context.flags & 512 /* NodeBuilderFlags.WriteTypeParametersInQualifiedName */ && index < (chain.length - 1)) {
                    var parentSymbol = symbol;
                    var nextSymbol_1 = chain[index + 1];
                    if (ts.getCheckFlags(nextSymbol_1) & 1 /* CheckFlags.Instantiated */) {
                        var params = getTypeParametersOfClassOrInterface(parentSymbol.flags & 2097152 /* SymbolFlags.Alias */ ? resolveAlias(parentSymbol) : parentSymbol);
                        typeParameterNodes = mapToTypeNodes(ts.map(params, function (t) { return getMappedType(t, nextSymbol_1.mapper); }), context);
                    }
                    else {
                        typeParameterNodes = typeParametersToTypeParameterDeclarations(symbol, context);
                    }
                }
                return typeParameterNodes;
            }
            /**
             * Given A[B][C][D], finds A[B]
             */