// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
import { isWindows } from "./_os.ts";
import { dirname as posixUnstableDirname } from "./posix/unstable_dirname.ts";
import { dirname as windowsUnstableDirname } from "./windows/unstable_dirname.ts";
/**
* Return the directory path of a file URL.
*
* @experimental **UNSTABLE**: New API, yet to be vetted.
*
* @example Usage
* ```ts
* import { dirname } from "@std/path/unstable-dirname";
* import { assertEquals } from "@std/assert";
*
* if (Deno.build.os === "windows") {
* assertEquals(dirname("C:\\home\\user\\Documents\\image.png"), "C:\\home\\user\\Documents");
* assertEquals(dirname(new URL("file:///C:/home/user/Documents/image.png")), "C:\\home\\user\\Documents");
* } else {
* assertEquals(dirname("/home/user/Documents/image.png"), "/home/user/Documents");
* assertEquals(dirname(new URL("file:///home/user/Documents/image.png")), "/home/user/Documents");
* }
* ```
*
* @param path Path to extract the directory from.
* @returns The directory path.
*/
export function dirname(path: string | URL): string {
return isWindows ? windowsUnstableDirname(path) : posixUnstableDirname(path);
}
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