const x = [{a: 1, b: 2}].map((d: any) => ({...d, c: 'something new'}))
how can I make x
has c property
on array of object above?
I tried
const x = ([{a: 1, b: 2}] as any).map((d: <{c: string}>) => ({...d, c: 'something new'}))
but it doesn’t seems it’s the right syntax.
>Solution :
You don’t need the <>
when specifying an inline type
const x = ([{a: 1, b: 2}] as any).map((d: {c: string}) => ({...d, c: 'something new'}))
You could type the result like this
const x: Array<{a:number; b: number; c:string;}> = [{a: 1, b: 2}].map((d) => ({...d, c: 'something new'}))
Or simply let TypeScript figure it out (preferred as @AluanHaddad mentioned)
const x = [{a: 1, b: 2}].map((d) => ({...d, c: 'something new'}));