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std/fs/ensure_link.ts

Deno standard library
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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.import * as path from "../path/mod.ts";import { ensureDir, ensureDirSync } from "./ensure_dir.ts";import { exists, existsSync } from "./exists.ts";import { getFileInfoType } from "./_util.ts";
/** * Ensures that the hard link exists. * If the directory structure does not exist, it is created. * * @param src the source file path. Directory hard links are not allowed. * @param dest the destination link path */export async function ensureLink(src: string, dest: string): Promise<void> { if (await exists(dest)) { const destStatInfo = await Deno.lstat(dest); const destFilePathType = getFileInfoType(destStatInfo); if (destFilePathType !== "file") { throw new Error( `Ensure path exists, expected 'file', got '${destFilePathType}'`, ); } return; }
await ensureDir(path.dirname(dest));
await Deno.link(src, dest);}
/** * Ensures that the hard link exists. * If the directory structure does not exist, it is created. * * @param src the source file path. Directory hard links are not allowed. * @param dest the destination link path */export function ensureLinkSync(src: string, dest: string): void { if (existsSync(dest)) { const destStatInfo = Deno.lstatSync(dest); const destFilePathType = getFileInfoType(destStatInfo); if (destFilePathType !== "file") { throw new Error( `Ensure path exists, expected 'file', got '${destFilePathType}'`, ); } return; }
ensureDirSync(path.dirname(dest));
Deno.linkSync(src, dest);}