std/assert/_format.ts

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.

// This file been copied to `std/expect`.

/**
 * Converts the input into a string. Objects, Sets and Maps are sorted so as to
 * make tests less flaky
 * @param v Value to be formatted
 */
export function format(v: unknown): string {
  // deno-lint-ignore no-explicit-any
  const { Deno } = globalThis as any;
  return typeof Deno?.inspect === "function"
    ? Deno.inspect(v, {
      depth: Infinity,
      sorted: true,
      trailingComma: true,
      compact: false,
      iterableLimit: Infinity,
      // getters should be true in assertEquals.
      getters: true,
      strAbbreviateSize: Infinity,
    })
    : `"${String(v).replace(/(?=["\\])/g, "\\")}"`;
}