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std/assert/assert_less.ts

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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import { format } from "./_format.ts";import { AssertionError } from "./assertion_error.ts";
/** * Make an assertion that `actual` is less than `expected`. * If not then throw. * * @example * ```ts * import { assertLess } from "https://deno.land/std@$STD_VERSION/assert/assert_less.ts"; * * assertLess(1, 2); // Doesn't throw * assertLess(2, 1); // Throws * ``` */export function assertLess<T>(actual: T, expected: T, msg?: string) { if (actual < expected) return;
const actualString = format(actual); const expectedString = format(expected); throw new AssertionError(msg ?? `Expect ${actualString} < ${expectedString}`);}