import { type Join } from "https://deno.land/x/scaffold@0.3.0/src/deps/types.ts";
Join an array of strings and/or numbers using the given string as a delimiter.
Use-case: Defining key paths in a nested object. For example, for dot-notation fields in MongoDB queries.
Examples
Example 1
Example 1
import type {Join} from 'type-fest';
// Mixed (strings & numbers) items; result is: 'foo.0.baz'
const path: Join<['foo', 0, 'baz'], '.'> = ['foo', 0, 'baz'].join('.');
// Only string items; result is: 'foo.bar.baz'
const path: Join<['foo', 'bar', 'baz'], '.'> = ['foo', 'bar', 'baz'].join('.');
// Only number items; result is: '1.2.3'
const path: Join<[1, 2, 3], '.'> = [1, 2, 3].join('.');