export function nameOf()

in src/powerquery-parser/language/type/typeUtils/nameOf.ts [8:63]
40 lines of code
18 McCabe index (conditional complexity)

export function nameOf(type: Type.TPowerQueryType): string {
    if (type.kind === Type.TypeKind.Null) {
        return "null";
    }

    switch (type.maybeExtendedKind) {
        case Type.ExtendedTypeKind.NumberLiteral:
        case Type.ExtendedTypeKind.TextLiteral:
            return prefixNullableIfRequired(type, `${type.literal}`);

        case Type.ExtendedTypeKind.AnyUnion:
            return type.unionedTypePairs.map((subtype: Type.TPowerQueryType) => nameOf(subtype)).join(" | ");

        case Type.ExtendedTypeKind.DefinedFunction:
            return prefixNullableIfRequired(type, nameOfFunctionSignature(type, true));

        case Type.ExtendedTypeKind.DefinedList:
            return prefixNullableIfRequired(type, `{${nameOfIterable(type.elements)}}`);

        case Type.ExtendedTypeKind.DefinedListType:
            return prefixNullableIfRequired(type, `type {${nameOfIterable(type.itemTypes)}}`);

        case Type.ExtendedTypeKind.DefinedRecord:
            return prefixNullableIfRequired(type, nameOfFieldSpecificationList(type));

        case Type.ExtendedTypeKind.DefinedTable:
            return prefixNullableIfRequired(type, `table ${nameOfFieldSpecificationList(type)}`);

        case Type.ExtendedTypeKind.FunctionType:
            return prefixNullableIfRequired(type, `type function ${nameOfFunctionSignature(type, false)}`);

        case Type.ExtendedTypeKind.ListType:
            return prefixNullableIfRequired(type, `type {${nameOf(type.itemType)}}`);

        case Type.ExtendedTypeKind.LogicalLiteral:
            return prefixNullableIfRequired(type, `${type.normalizedLiteral}`);

        case Type.ExtendedTypeKind.PrimaryPrimitiveType:
            return prefixNullableIfRequired(type, `type ${nameOf(type.primitiveType)}`);

        case Type.ExtendedTypeKind.RecordType:
            return prefixNullableIfRequired(type, `type ${nameOfFieldSpecificationList(type)}`);

        case Type.ExtendedTypeKind.TableType:
            return prefixNullableIfRequired(type, `type table ${nameOfFieldSpecificationList(type)}`);

        case Type.ExtendedTypeKind.TableTypePrimaryExpression:
            return prefixNullableIfRequired(type, `type table ${nameOf(type.primaryExpression)}`);

        case undefined:
            return prefixNullableIfRequired(type, nameOfTypeKind(type.kind));

        default:
            throw Assert.isNever(type);
    }
}