TypeScript/tests/cases/compiler/sliceResultCast.ts

declare var x: [number, string] | [number, string, string];

x.slice(1) as readonly string[];
Consider identical instances of the same symbol equivalent when creating union and intersection properties (#43560) * Consider identical instances of the same symbol equivalent when creating union and intersection properties * Also copy over mapper and type (if available) on cloned symbols * Editorial feedback 2021-04-15 01:55:45 +02:00			`declare var x: [number, string] \| [number, string, string];`

			`x.slice(1) as readonly string[];`