11 replies

Is it possible to infer a const type from a Set?

Say I have

const foo = new Set([1,2,3])

const foo = new Set([1,2,3])

const foo = new Set([1,2,3])

const foo = new Set([1,2,3])
how can I infer the type of foo as const?

For example,

const bar = [...foo.keys()] as const

const bar = [...foo.keys()] as const

const bar = [...foo.keys()] as const

const bar = [...foo.keys()] as const is of type

number[]

number[]

instead of type

1 | 2 | 3

1 | 2 | 3

1 | 2 | 3

1 | 2 | 3.