@stackline/to-vfile

vfile utility to create a vfile from a filepath.

Documentation | npm | Issues | Repository

Current package version: 1.0.2

Why this package?

@stackline/to-vfile is the Stackline-maintained distribution of [email protected]. It is an independent continuation of to-vfile; original authors and licenses remain credited below.

Compatibility

| Item | Value | | :--- | :--- | | Package | @stackline/[email protected] | | API target | [email protected] | | Supported Node.js | See supported framework requirements | | License | MIT | | Module type | module | | Main entry | index.js | | Types | index.d.ts | | Runtime dependencies | vfile, is-buffer |

Installation

npm install @stackline/to-vfile

Preserve existing imports and plugin resolution with an npm alias:

npm install to-vfile@npm:@stackline/to-vfile

Usage and API reference

to-vfile

vfile utility to read and write to the file system.

Contents

• What is this?
• When should I use this?
• Install
• Use
• API
  • toVFile(description)
  • read(description[, options][, callback])
  • readSync(description[, options])
  • write(description[, options][, callback])
  • writeSync(description[, options])
  • BufferEncoding
  • Callback
  • Compatible
  • ReadOptions
  • WriteOptions
• Types
• Compatibility
• Contribute
• License

What is this?

This utility places file paths and 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 files.

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. In Node.js (version 14.14+ and 16.0+), install with npm:

npm install @stackline/to-vfile

In Deno with esm.sh:

import {toVFile, read, readSync, write, writeSync} from 'https://esm.sh/to-vfile@7'

In browsers with esm.sh:

<script type="module">
  import {toVFile, read, readSync, write, writeSync} from 'https://esm.sh/to-vfile@7?bundle'
</script>

Use

import {toVFile, read} from '@stackline/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:

VFile {
  data: {},
  messages: [],
  history: [ 'readme.md' ],
  cwd: '/Users/tilde/Projects/oss/to-vfile'
}
VFile {
  data: {},
  messages: [],
  history: [ '/Users/tilde/Projects/oss/to-vfile/readme.md' ],
  cwd: '/Users/tilde/Projects/oss/to-vfile'
}
VFile {
  data: {},
  messages: [],
  history: [ '.git/HEAD' ],
  cwd: '/Users/tilde/Projects/oss/to-vfile',
  value: <Buffer 72 65 66 3a 20 72 65 66 73 2f 68 65 61 64 73 2f 6d 61 69 6e 0a>
}
VFile {
  data: {},
  messages: [],
  history: [ '.git/HEAD' ],
  cwd: '/Users/tilde/Projects/oss/to-vfile',
  value: 'ref: refs/heads/main\n'
}

API

This package exports the identifiers read, readSync, toVFile, write, and writeSync. 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, optional) — fath to file, file options, or file itself

Returns

Given file or new file (VFile).

read(description[, options][, callback])

Create a virtual file and read it in, async.

Signatures

• (description[, options], Callback): void
• (description[, options]): Promise<VFile>

Parameters

• description (Compatible) — path to file, file options, or file itself
• options (BufferEncoding, ReadOptions, optional)
• callback (Callback, optional) — callback called when done

Returns

Nothing when a callback is given, otherwise promise that resolves to given file or new file (VFile).

readSync(description[, options])

Create a virtual file and read it in, synchronously.

Parameters

• description (Compatible) — path to file, file options, or file itself
• options (BufferEncoding, ReadOptions, optional)

Returns

Given file or new file (VFile).

write(description[, options][, callback])

Create a virtual file and write it, async.

Signatures

• (description[, options], Callback): void
• (description[, options]): Promise<VFile>

Parameters

• description (Compatible) — path to file, file options, or file itself
• options (BufferEncoding, WriteOptions, optional)
• callback (Callback, optional) — callback called when done

Returns

Nothing when a callback is given, otherwise promise that resolves to given file or new file (VFile).

writeSync(description[, options])

Create a virtual file and write it, synchronously.

Parameters

• description (Compatible) — path to file, file options, or file itself
• options (BufferEncoding, WriteOptions, optional)

Returns

Given file or new file (VFile).

BufferEncoding

Encodings supported by the buffer class (TypeScript type).

This is a copy of the types from Node and VFile.

Type

type BufferEncoding =
  | 'ascii'
  | 'utf8'
  | 'utf-8'
  | 'utf16le'
  | 'ucs2'
  | 'ucs-2'
  | 'base64'
  | 'base64url'
  | 'latin1'
  | 'binary'
  | 'hex'

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, optional) — file when reading or writing was successful

Returns

Nothing (void).

Compatible

URL to file, path to file, options for file, or actual file (TypeScript type).

Type

type Compatible = Buffer | URL | VFileOptions | VFile | string

See VFileOptions and VFile.

ReadOptions

Configuration for fs.readFile (TypeScript type).

Fields

• encoding (BufferEncoding, 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, optional) — encoding to write file as
• 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, Callback, Compatible, ReadOptions, and WriteOptions.

Compatibility

Projects maintained by the unified collective are compatible with all maintained versions of Node.js. As of now, that is Node.js 14.14+ and 16.0+. Our projects sometimes work with older versions, but this is not guaranteed.

Contribute

See contributing.md in vfile/.github for ways to get started. See support.md for ways to get help.

This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.

License

MIT © Titus Wormer

Credits and original authors

• Original project: to-vfile.
• Titus Wormer.
• Copyright (c) 2015 Titus Wormer [email protected].
• Stackline maintenance: Alexandro Paixao Marques and Stackline contributors.

Original copyright, license notices and contributor acknowledgements remain part of this distribution. Stackline maintenance does not replace authorship of the original work.

Community and Links

• Stackline website
• GitHub projects
• npm packages
• Reddit community — r/Stackline
• Maintainer LinkedIn

Use this repository's issue tracker for reproducible bugs and feature requests. Join r/Stackline for examples, usage questions and release discussions.