Function createMappedTypeNodeFromType

test/fixtures/snapshot/typescript.js:52680–52712

(type)

                    return typeToTypeNodeHelper(type, context);
                }
                function createMappedTypeNodeFromType(type) {
                    ts.Debug.assert(!!(type.flags & 524288 /* TypeFlags.Object */));
                    var readonlyToken = type.declaration.readonlyToken ? ts.factory.createToken(type.declaration.readonlyToken.kind) : undefined;
                    var questionToken = type.declaration.questionToken ? ts.factory.createToken(type.declaration.questionToken.kind) : undefined;
                    var appropriateConstraintTypeNode;
                    var newTypeVariable;
                    if (isMappedTypeWithKeyofConstraintDeclaration(type)) {
                        // We have a { [P in keyof T]: X }
                        // We do this to ensure we retain the toplevel keyof-ness of the type which may be lost due to keyof distribution during `getConstraintTypeFromMappedType`
                        if (!(getModifiersTypeFromMappedType(type).flags & 262144 /* TypeFlags.TypeParameter */) && context.flags & 4 /* NodeBuilderFlags.GenerateNamesForShadowedTypeParams */) {
                            var newParam = createTypeParameter(createSymbol(262144 /* SymbolFlags.TypeParameter */, "T"));
                            var name = typeParameterToName(newParam, context);
                            newTypeVariable = ts.factory.createTypeReferenceNode(name);
                        }
                        appropriateConstraintTypeNode = ts.factory.createTypeOperatorNode(140 /* SyntaxKind.KeyOfKeyword */, newTypeVariable || typeToTypeNodeHelper(getModifiersTypeFromMappedType(type), context));
                    }
                    else {
                        appropriateConstraintTypeNode = typeToTypeNodeHelper(getConstraintTypeFromMappedType(type), context);
                    }
                    var typeParameterNode = typeParameterToDeclarationWithConstraint(getTypeParameterFromMappedType(type), context, appropriateConstraintTypeNode);
                    var nameTypeNode = type.declaration.nameType ? typeToTypeNodeHelper(getNameTypeFromMappedType(type), context) : undefined;
                    var templateTypeNode = typeToTypeNodeHelper(removeMissingType(getTemplateTypeFromMappedType(type), !!(getMappedTypeModifiers(type) & 4 /* MappedTypeModifiers.IncludeOptional */)), context);
                    var mappedTypeNode = ts.factory.createMappedTypeNode(readonlyToken, typeParameterNode, nameTypeNode, questionToken, templateTypeNode, /*members*/ undefined);
                    context.approximateLength += 10;
                    var result = ts.setEmitFlags(mappedTypeNode, 1 /* EmitFlags.SingleLine */);
                    if (isMappedTypeWithKeyofConstraintDeclaration(type) && !(getModifiersTypeFromMappedType(type).flags & 262144 /* TypeFlags.TypeParameter */) && context.flags & 4 /* NodeBuilderFlags.GenerateNamesForShadowedTypeParams */) {
                        // homomorphic mapped type with a non-homomorphic naive inlining
                        // wrap it with a conditional like `SomeModifiersType extends infer U ? {..the mapped type...} : never` to ensure the resulting
                        // type stays homomorphic
                        return ts.factory.createConditionalTypeNode(typeToTypeNodeHelper(getModifiersTypeFromMappedType(type), context), ts.factory.createInferTypeNode(ts.factory.createTypeParameterDeclaration(/*modifiers*/ undefined, ts.factory.cloneNode(newTypeVariable.typeName))), result, ts.factory.createKeywordTypeNode(143 /* SyntaxKind.NeverKeyword */));
                    }
                    return result;
                }
                function createAnonymousTypeNode(type) {
                    var _a;
                    var typeId = type.id;