indexOfOrThrow

function String.indexOfOrThrow(
    target: string,
    source: string,
): number

Returns the index of the first occurrence of source string in target string, or throws an error if not found.

Example

data-first

import { String } from "@monstermann/string";

String.indexOfOrThrow("hello world", "world"); // 6
String.indexOfOrThrow("hello world", "foo"); // throws FnError

data-last

import { String } from "@monstermann/string";

pipe("hello world", String.indexOfOrThrow("world")); // 6
pipe("hello world", String.indexOfOrThrow("foo")); // throws FnError