abi.js
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JavaScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
import { assertPath } from "../_common/assert_path.js";
import { normalize } from "./normalize.js";
/**
* Join all given a sequence of `paths`,then normalizes the resulting path.
*
* @example Usage
* ```ts
* import { join } from "@std/path/posix/join";
* import { assertEquals } from "@std/assert";
*
* const path = join("/foo", "bar", "baz/asdf", "quux", "..");
* assertEquals(path, "/foo/bar/baz/asdf");
* ```
*
* @example Working with URLs
* ```ts
* import { join } from "@std/path/posix/join";
* import { assertEquals } from "@std/assert";
*
* const url = new URL("https://deno.land");
* url.pathname = join("std", "path", "mod.ts");
* assertEquals(url.href, "https://deno.land/std/path/mod.ts");
*
* url.pathname = join("//std", "path/", "/mod.ts");
* assertEquals(url.href, "https://deno.land/std/path/mod.ts");
* ```
*
* @param paths The paths to join.
* @returns The joined path.
*/
export function join(...paths) {
if (paths.length === 0)
return ".";
paths.forEach((path) => assertPath(path));
const joined = paths.filter((path) => path.length > 0).join("/");
return joined === "" ? "." : normalize(joined);
}