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| export type WithAge<TSource> = TSource & {
| age: number
| }
|
| export function isWithAge(obj: any): obj is WithAge<{}> {
| return typeof obj.age === 'number';
| }
|
| export function extendWithAge<
| TSource
| >(
| sourceObj: TSource,
| age: number,
| ): WithAge<TSource> {
| const extension = { age };
| return { ...sourceObj, ...extension };
| }
|
|
