I recently came across an object that looks like this:
const myObject = {
0: 'FIRST',
10: 'SECOND',
20: 'THIRD',
}
My goal is to define a type using the values from this object, similar to this:
type AwesomeType = 'FIRST' | 'SECOND' | 'THIRD';
Any suggestions on how I can accomplish this?
If you want to determine the type of a variable (object), you can utilize the typeof operator. To avoid widening literal types, consider using the as const assertion:
const myObject = {
0: 'FIRST',
10: 'SECOND',
20: 'THIRD',
} as const;
type Values<T> = T[keyof T];
type AwesomeType = Values<typeof myObject>; // "FIRST" | "SECOND" | "THIRD"
Try doing it like this
type NewType = 'A' | 'B' | 'C';
type OurType = Record<number, NewType>
const ourObject: OurType = {
0: 'A',
10: 'B',
20: 'C',
}
Check out this playground
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