/
ensure_dir.ts
108 lines (102 loc) · 2.77 KB
/
ensure_dir.ts
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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { getFileInfoType } from "./_get_file_info_type.ts";
/**
* Asynchronously ensures that the directory exists. If the directory structure
* does not exist, it is created. Like `mkdir -p`.
*
* Requires the `--allow-read` and `--allow-write` flag.
*
* @param dir The path of the directory to ensure, as a string or URL.
* @returns A promise that resolves once the directory exists.
*
* @example
* ```ts
* import { ensureDir } from "https://deno.land/std@$STD_VERSION/fs/ensure_dir.ts";
*
* await ensureDir("./bar");
* ```
*/
export async function ensureDir(dir: string | URL) {
try {
const fileInfo = await Deno.stat(dir);
if (!fileInfo.isDirectory) {
throw new Error(
`Ensure path exists, expected 'dir', got '${
getFileInfoType(fileInfo)
}'`,
);
}
return;
} catch (err) {
if (!(err instanceof Deno.errors.NotFound)) {
throw err;
}
}
// The dir doesn't exist. Create it.
// This can be racy. So we catch AlreadyExists and check stat again.
try {
await Deno.mkdir(dir, { recursive: true });
} catch (err) {
if (!(err instanceof Deno.errors.AlreadyExists)) {
throw err;
}
const fileInfo = await Deno.stat(dir);
if (!fileInfo.isDirectory) {
throw new Error(
`Ensure path exists, expected 'dir', got '${
getFileInfoType(fileInfo)
}'`,
);
}
}
}
/**
* Synchronously ensures that the directory exists. If the directory structure
* does not exist, it is created. Like `mkdir -p`.
*
* Requires the `--allow-read` and `--allow-write` flag.
*
* @param dir The path of the directory to ensure, as a string or URL.
* @returns A void value that returns once the directory exists.
*
* @example
* ```ts
* import { ensureDir } from "https://deno.land/std@$STD_VERSION/fs/ensure_dir.ts";
*
* await ensureDir("./bar");
* ```
*/
export function ensureDirSync(dir: string | URL) {
try {
const fileInfo = Deno.statSync(dir);
if (!fileInfo.isDirectory) {
throw new Error(
`Ensure path exists, expected 'dir', got '${
getFileInfoType(fileInfo)
}'`,
);
}
return;
} catch (err) {
if (!(err instanceof Deno.errors.NotFound)) {
throw err;
}
}
// The dir doesn't exist. Create it.
// This can be racy. So we catch AlreadyExists and check stat again.
try {
Deno.mkdirSync(dir, { recursive: true });
} catch (err) {
if (!(err instanceof Deno.errors.AlreadyExists)) {
throw err;
}
const fileInfo = Deno.statSync(dir);
if (!fileInfo.isDirectory) {
throw new Error(
`Ensure path exists, expected 'dir', got '${
getFileInfoType(fileInfo)
}'`,
);
}
}
}