Ryan KesPGP keyI build stuffEmailGithubTwitterLast.fmMastodonMatrixTypeScript Tuple Type
Syntax
Basic
var nameNumber: [string, number]
var name: string
var num: number
// Okay
nameNumber = ["Jenny", 8675309]
// Error!
nameNumber = ["Jenny", "867-5309"]
var [name, num] = nameNumberRest elements
Rest elements can occur anywhere in a tuple, not just at the end:
type Strings = [string, string]
type Numbers = [number, number]
// [string, string, number, number, boolean]
type StrStrNumNumBool = [...Strings, ...Numbers, boolean]Labels
type Range = [start: number, end: number]type Foo = [first: number, second?: string, ...rest: any[]]