Function getObjectTypeInstantiation

test/fixtures/snapshot/typescript.js:63402–63451

(type, mapper, aliasSymbol, aliasTypeArguments)

            return result;
        }
        function getObjectTypeInstantiation(type, mapper, aliasSymbol, aliasTypeArguments) {
            var declaration = type.objectFlags & 4 /* ObjectFlags.Reference */ ? type.node :
                type.objectFlags & 8388608 /* ObjectFlags.InstantiationExpressionType */ ? type.node :
                    type.symbol.declarations[0];
            var links = getNodeLinks(declaration);
            var target = type.objectFlags & 4 /* ObjectFlags.Reference */ ? links.resolvedType :
                type.objectFlags & 64 /* ObjectFlags.Instantiated */ ? type.target : type;
            var typeParameters = links.outerTypeParameters;
            if (!typeParameters) {
                // The first time an anonymous type is instantiated we compute and store a list of the type
                // parameters that are in scope (and therefore potentially referenced). For type literals that
                // aren't the right hand side of a generic type alias declaration we optimize by reducing the
                // set of type parameters to those that are possibly referenced in the literal.
                var outerTypeParameters = getOuterTypeParameters(declaration, /*includeThisTypes*/ true);
                if (isJSConstructor(declaration)) {
                    var templateTagParameters = getTypeParametersFromDeclaration(declaration);
                    outerTypeParameters = ts.addRange(outerTypeParameters, templateTagParameters);
                }
                typeParameters = outerTypeParameters || ts.emptyArray;
                var allDeclarations_1 = type.objectFlags & (4 /* ObjectFlags.Reference */ | 8388608 /* ObjectFlags.InstantiationExpressionType */) ? [declaration] : type.symbol.declarations;
                typeParameters = (target.objectFlags & (4 /* ObjectFlags.Reference */ | 8388608 /* ObjectFlags.InstantiationExpressionType */) || target.symbol.flags & 8192 /* SymbolFlags.Method */ || target.symbol.flags & 2048 /* SymbolFlags.TypeLiteral */) && !target.aliasTypeArguments ?
                    ts.filter(typeParameters, function (tp) { return ts.some(allDeclarations_1, function (d) { return isTypeParameterPossiblyReferenced(tp, d); }); }) :
                    typeParameters;
                links.outerTypeParameters = typeParameters;
            }
            if (typeParameters.length) {
                // We are instantiating an anonymous type that has one or more type parameters in scope. Apply the
                // mapper to the type parameters to produce the effective list of type arguments, and compute the
                // instantiation cache key from the type IDs of the type arguments.
                var combinedMapper_1 = combineTypeMappers(type.mapper, mapper);
                var typeArguments = ts.map(typeParameters, function (t) { return getMappedType(t, combinedMapper_1); });
                var newAliasSymbol = aliasSymbol || type.aliasSymbol;
                var newAliasTypeArguments = aliasSymbol ? aliasTypeArguments : instantiateTypes(type.aliasTypeArguments, mapper);
                var id = getTypeListId(typeArguments) + getAliasId(newAliasSymbol, newAliasTypeArguments);
                if (!target.instantiations) {
                    target.instantiations = new ts.Map();
                    target.instantiations.set(getTypeListId(typeParameters) + getAliasId(target.aliasSymbol, target.aliasTypeArguments), target);
                }
                var result = target.instantiations.get(id);
                if (!result) {
                    var newMapper = createTypeMapper(typeParameters, typeArguments);
                    result = target.objectFlags & 4 /* ObjectFlags.Reference */ ? createDeferredTypeReference(type.target, type.node, newMapper, newAliasSymbol, newAliasTypeArguments) :
                        target.objectFlags & 32 /* ObjectFlags.Mapped */ ? instantiateMappedType(target, newMapper, newAliasSymbol, newAliasTypeArguments) :
                            instantiateAnonymousType(target, newMapper, newAliasSymbol, newAliasTypeArguments);
                    target.instantiations.set(id, result);
                }
                return result;
            }
            return type;
        }
        function maybeTypeParameterReference(node) {
            return !(node.parent.kind === 178 /* SyntaxKind.TypeReference */ && node.parent.typeArguments && node === node.parent.typeName ||
                node.parent.kind === 200 /* SyntaxKind.ImportType */ && node.parent.typeArguments && node === node.parent.qualifier);