import { type ValueOf } from "https://deno.land/x/scaffold@0.3.0/src/deps/types.ts";
Create a union of the given object's values, and optionally specify which keys to get the values from.
Please upvote this issue if you want to have this type as a built-in in TypeScript.
Examples
Example 1
Example 1
// data.json
{
'foo': 1,
'bar': 2,
'biz': 3
}
// main.ts
import type {ValueOf} from 'type-fest';
import data = require('./data.json.d.ts');
export function getData(name: string): ValueOf<typeof data> {
return data[name];
}
export function onlyBar(name: string): ValueOf<typeof data, 'bar'> {
return data[name];
}
// file.ts
import {getData, onlyBar} from './main';
getData('foo');
//=> 1
onlyBar('foo');
//=> TypeError ...
onlyBar('bar');
//=> 2
Type Parameters
optional
ValueType extends keyof ObjectType = keyof ObjectTypedefinition: ObjectType[ValueType]