4 ms·
Or better: type NonEmptyArray = [unknown, ...unknown[]]; const nea: NonEmptyArray = []; // ^^^ Type '[]' is not assignable to type 'NonEmptyArra
by triyambakam 4y ago
Or better:
type NonEmptyArray = [unknown, ...unknown[]];
const nea: NonEmptyArray = [];
// ^^^ Type '[]' is not assignable to type 'NonEmptyArray'.
// Source has 0 element(s) but target requires 1.
- throwaway09432 4y agoCan you map over this and preserve the NonEmptyArray type?
- triyambakam 4y agoDo you mean pass in a type? type NonEmptyArray<T> = [T, ...T[]];
- throwaway09432 4y agoI mean if I have a NonEmptyArray say xs, and I then xs.map(x=>2*x), will the result of this expression be a NonEmptyArray ?
- triyambakam 4y agoNo, unfortunately it will just be number[] as the return type.