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33 lines
1.2 KiB
TypeScript
33 lines
1.2 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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// This module is browser compatible.
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import { isWindows } from "./_os.ts";
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import { extname as posixUnstableExtname } from "./posix/unstable_extname.ts";
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import { extname as windowsUnstableExtname } from "./windows/unstable_extname.ts";
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/**
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* Return the extension of the path with leading period (".").
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*
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* @experimental **UNSTABLE**: New API, yet to be vetted.
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*
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* @example Usage
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* ```ts
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* import { extname } from "@std/path/unstable-extname";
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* import { assertEquals } from "@std/assert";
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*
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* if (Deno.build.os === "windows") {
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* assertEquals(extname("C:\\home\\user\\Documents\\image.png"), ".png");
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* assertEquals(extname(new URL("file:///C:/home/user/Documents/image.png")), ".png");
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* } else {
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* assertEquals(extname("/home/user/Documents/image.png"), ".png");
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* assertEquals(extname(new URL("file:///home/user/Documents/image.png")), ".png");
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* }
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* ```
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*
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* @param path Path with extension.
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* @returns The file extension. E.g. returns `.ts` for `file.ts`.
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*/
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export function extname(path: string | URL): string {
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return isWindows ? windowsUnstableExtname(path) : posixUnstableExtname(path);
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}
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