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https://github.com/vfile/to-vfile
utility to create a vfile from a filepath
https://github.com/vfile/to-vfile
file fs vfile vfile-util virtual
Last synced: about 1 month ago
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utility to create a vfile from a filepath
- Host: GitHub
- URL: https://github.com/vfile/to-vfile
- Owner: vfile
- License: mit
- Created: 2015-08-12T18:13:50.000Z (about 9 years ago)
- Default Branch: main
- Last Pushed: 2023-06-25T10:05:43.000Z (about 1 year ago)
- Last Synced: 2024-07-09T07:11:36.043Z (2 months ago)
- Topics: file, fs, vfile, vfile-util, virtual
- Language: JavaScript
- Homepage: https://unifiedjs.com
- Size: 178 KB
- Stars: 60
- Watchers: 9
- Forks: 6
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
- License: license
Awesome Lists containing this project
README
# to-vfile
[![Build][build-badge]][build]
[![Coverage][coverage-badge]][coverage]
[![Downloads][downloads-badge]][downloads]
[![Sponsors][sponsors-badge]][collective]
[![Backers][backers-badge]][collective]
[![Chat][chat-badge]][chat]
[vfile][] utility to read and write to the file system.
## Contents
* [What is this?](#what-is-this)
* [When should I use this?](#when-should-i-use-this)
* [Install](#install)
* [Use](#use)
* [API](#api)
* [`toVFile(description)`](#tovfiledescription)
* [`read(description[, options][, callback])`](#readdescription-options-callback)
* [`readSync(description[, options])`](#readsyncdescription-options)
* [`write(description[, options][, callback])`](#writedescription-options-callback)
* [`writeSync(description[, options])`](#writesyncdescription-options)
* [`BufferEncoding`](#bufferencoding)
* [`Callback`](#callback)
* [`Compatible`](#compatible)
* [`ReadOptions`](#readoptions)
* [`WriteOptions`](#writeoptions)
* [Types](#types)
* [Compatibility](#compatibility)
* [Contribute](#contribute)
* [License](#license)
## What is this?
This utility puts the file system first.
Where `vfile` itself focusses on file values (the file contents), this instead
focuses on the file system, which is a common case when working with *actual*
files from Node.js.
## When should I use this?
Use this if you know there’s a file system and want to use it.
Use `vfile` if there might not be a file system.
## Install
This package is [ESM only][esm].
In Node.js (version 16+), install with [npm][]:
```sh
npm install to-vfile
```
In Deno with [`esm.sh`][esmsh]:
```js
import {toVFile, read, readSync, write, writeSync} from 'https://esm.sh/to-vfile@8'
```
## Use
```js
import {toVFile, read} from 'to-vfile'
console.log(toVFile('readme.md'))
console.log(toVFile(new URL('readme.md', import.meta.url)))
console.log(await read('.git/HEAD'))
console.log(await read('.git/HEAD', 'utf8'))
```
Yields:
```js
VFile {
cwd: '/Users/tilde/Projects/oss/to-vfile',
data: {},
history: [ 'readme.md' ],
messages: []
}
VFile {
cwd: '/Users/tilde/Projects/oss/to-vfile',
data: {},
history: [ '/Users/tilde/Projects/oss/to-vfile/readme.md' ],
messages: []
}
VFile {
cwd: '/Users/tilde/Projects/oss/to-vfile',
data: {},
history: [ '.git/HEAD' ],
messages: [],
value:
}
VFile {
cwd: '/Users/tilde/Projects/oss/to-vfile',
data: {},
history: [ '.git/HEAD' ],
messages: [],
value: 'ref: refs/heads/main\n'
}
```
## API
This package exports the identifiers [`read`][api-read],
[`readSync`][api-read-sync], [`toVFile`][api-to-vfile],
[`write`][api-write], and [`writeSync`][api-write-sync].
There is no default export.
### `toVFile(description)`
Create a virtual file from a description.
This is like `VFile`, but it accepts a file path instead of file cotnents.
If `options` is a string, URL, or buffer, it’s used as the path.
Otherwise, if it’s a file, that’s returned instead.
Otherwise, the options are passed through to `new VFile()`.
###### Parameters
* `description` ([`Compatible`][api-compatible], optional)
— path to file, file options, or file itself
###### Returns
Given file or new file ([`VFile`][vfile]).
### `read(description[, options][, callback])`
Create a virtual file and read it in, async.
###### Signatures
* `(description[, options], Callback): undefined`
* `(description[, options]): Promise`
###### Parameters
* `description` ([`Compatible`][api-compatible])
— path to file, file options, or file itself
* `options` ([`BufferEncoding`][api-buffer-encoding],
[`ReadOptions`][api-read-options], optional)
* `callback` ([`Callback`][api-callback], optional)
— callback called when done
###### Returns
Nothing when a callback is given, otherwise [promise][] that resolves to given
file or new file ([`VFile`][vfile]).
### `readSync(description[, options])`
Create a virtual file and read it in, synchronously.
###### Parameters
* `description` ([`Compatible`][api-compatible])
— path to file, file options, or file itself
* `options` ([`BufferEncoding`][api-buffer-encoding],
[`ReadOptions`][api-read-options], optional)
###### Returns
Given file or new file ([`VFile`][vfile]).
### `write(description[, options][, callback])`
Create a virtual file and write it, async.
###### Signatures
* `(description[, options], Callback): undefined`
* `(description[, options]): Promise`
###### Parameters
* `description` ([`Compatible`][api-compatible])
— path to file, file options, or file itself
* `options` ([`BufferEncoding`][api-buffer-encoding],
[`WriteOptions`][api-write-options], optional)
* `callback` ([`Callback`][api-callback], optional)
— callback called when done
###### Returns
Nothing when a callback is given, otherwise [promise][] that resolves to given
file or new file ([`VFile`][vfile]).
### `writeSync(description[, options])`
Create a virtual file and write it, synchronously.
###### Parameters
* `description` ([`Compatible`][api-compatible])
— path to file, file options, or file itself
* `options` ([`BufferEncoding`][api-buffer-encoding],
[`WriteOptions`][api-write-options], optional)
###### Returns
Given file or new file ([`VFile`][vfile]).
### `BufferEncoding`
Encodings supported by the buffer class (TypeScript type).
This is a copy of the types from Node.
###### Type
```ts
type BufferEncoding =
| 'ascii'
| 'base64'
| 'base64url'
| 'binary'
| 'hex'
| 'latin1'
| 'ucs-2'
| 'ucs2'
| 'utf-8'
| 'utf16le'
| 'utf8'
```
### `Callback`
Callback called after reading or writing a file (TypeScript type).
###### Parameters
* `error` (`Error`, optional)
— error when reading or writing was not successful
* `file` ([`VFile`][vfile], optional)
— file when reading or writing was successful
###### Returns
Nothing (`undefined`).
### `Compatible`
URL to file, path to file, options for file, or actual file (TypeScript type).
###### Type
```ts
type Compatible = Uint8Array | URL | VFile | VFileOptions | string
```
See [`VFileOptions`][vfile-options] and [`VFile`][vfile].
### `ReadOptions`
Configuration for `fs.readFile` (TypeScript type).
###### Fields
* `encoding` ([`BufferEncoding`][api-buffer-encoding], optional)
— encoding to read file as, will turn `file.value` into a `string` if passed
* `flag` (`string`, optional)
— file system flags to use
### `WriteOptions`
Configuration for `fs.writeFile` (TypeScript type).
###### Fields
* `encoding` ([`BufferEncoding`][api-buffer-encoding], optional)
— encoding to write file as when `file.value` is a `string`
* `mode` (`number | string`, optional)
— file mode (permission and sticky bits) if the file was newly created
* `flag` (`string`, optional)
— file system flags to use
## Types
This package is fully typed with [TypeScript][].
It exports the additional types
[`BufferEncoding`][api-buffer-encoding],
[`Callback`][api-callback],
[`Compatible`][api-compatible],
[`ReadOptions`][api-read-options], and
[`WriteOptions`][api-write-options].
## Compatibility
Projects maintained by the unified collective are compatible with maintained
versions of Node.js.
When we cut a new major release, we drop support for unmaintained versions of
Node.
This means we try to keep the current release line, `vfile@^8`,
compatible with Node.js 16.
## Contribute
See [`contributing.md`][contributing] in [`vfile/.github`][health] for ways to
get started.
See [`support.md`][support] for ways to get help.
This project has a [code of conduct][coc].
By interacting with this repository, organization, or community you agree to
abide by its terms.
## License
[MIT][license] © [Titus Wormer][author]
[build-badge]: https://github.com/vfile/to-vfile/workflows/main/badge.svg
[build]: https://github.com/vfile/to-vfile/actions
[coverage-badge]: https://img.shields.io/codecov/c/github/vfile/to-vfile.svg
[coverage]: https://codecov.io/github/vfile/to-vfile
[downloads-badge]: https://img.shields.io/npm/dm/to-vfile.svg
[downloads]: https://www.npmjs.com/package/to-vfile
[sponsors-badge]: https://opencollective.com/unified/sponsors/badge.svg
[backers-badge]: https://opencollective.com/unified/backers/badge.svg
[collective]: https://opencollective.com/unified
[chat-badge]: https://img.shields.io/badge/chat-discussions-success.svg
[chat]: https://github.com/vfile/vfile/discussions
[npm]: https://docs.npmjs.com/cli/install
[esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c
[esmsh]: https://esm.sh
[typescript]: https://www.typescriptlang.org
[contributing]: https://github.com/vfile/.github/blob/main/contributing.md
[support]: https://github.com/vfile/.github/blob/main/support.md
[health]: https://github.com/vfile/.github
[coc]: https://github.com/vfile/.github/blob/main/code-of-conduct.md
[license]: license
[author]: https://wooorm.com
[vfile]: https://github.com/vfile/vfile
[vfile-options]: https://github.com/vfile/vfile#options
[promise]: https://developer.mozilla.org/Web/JavaScript/Reference/Global_Objects/Promise
[api-read]: #readdescription-options-callback
[api-read-sync]: #readsyncdescription-options
[api-to-vfile]: #tovfiledescription
[api-write]: #writedescription-options-callback
[api-write-sync]: #writesyncdescription-options
[api-buffer-encoding]: #bufferencoding
[api-callback]: #callback
[api-compatible]: #compatible
[api-read-options]: #readoptions
[api-write-options]: #writeoptions