Object is possibly 'undefined'.

Argument of type '{ readonly lastModified: number; readonly name: string; readonly webkitRelativePath: string; readonly size: number; readonly type: string; arrayBuffer: () => Promise<ArrayBuffer>; bytes: () => Promise<...>; slice: (start?: number | undefined, end?: number | undefined, contentType?: string | undefined) => Blob; strea...' is not assignable to parameter of type 'File'.

Type '({ value: number; name: string | undefined; color: string; } | { value: number; name: string; color: string | undefined; })[]' is not assignable to type '{ value: number; name: string; color: string; }[]'.

Type 'string | undefined' is not assignable to type 'string | null'.

Type 'File | undefined' is not assignable to type 'File | null'.

Argument of type 'string | undefined' is not assignable to parameter of type 'string'.

No overload matches this call.

Object is possibly 'undefined'.

Type '{ value: number; name: string; color: string | undefined; }[]' is not assignable to type '{ value: number; name: string; color: string; }[]'.