Project: vfile/vfile-reporter-json

Package: vfile-reporter-json@3.2.0

  1. Dependents: 0
  2. vfile utility to create a JSON report for a file
  1. util 147
  2. utility 143
  3. file 34
  4. virtual 19
  5. vfile 17
  6. vfile-util 15
  7. vfile-reporter 4
  8. reporter 4
  9. formatter 3
  10. format 3
  11. report 2
  12. json 2


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vfile utility to create a report in machine readable JSON.


What is this?

This package is like vfile-reporter but it outputs machine readable JSON.

When should I use this?

You can use this when you need to serialize lint results for machines, use vfile-reporter itself for humans.


This package is ESM only. In Node.js (version 12.20+, 14.14+, or 16.0+), install with npm:

npm install vfile-reporter-json

In Deno with esm.sh:

import {reporterJson} from 'https://esm.sh/vfile-reporter-json@3'

In browsers with esm.sh:

<script type="module">
  import {reporterJson} from 'https://esm.sh/vfile-reporter-json@3?bundle'


import {VFile} from 'vfile'
import {reporterJson} from 'vfile-reporter-json'

const one = new VFile({path: 'test/fixture/1.js'})
const two = new VFile({path: 'test/fixture/2.js'})

one.message('Warning!', {line: 2, column: 4})

console.log(reporterJson([one, two]))




This package exports the identifier reporterJson. That identifier is also the default export.

reporter(files[, options])

Generate stringified JSON for files (VFile or Array.<VFile>).


Do not output anything for a file which has no warnings or errors (boolean, default: false). The default behavior is to show a success message.


Do not output messages without fatal set to true (boolean, default: false). Also sets quiet to true.


Given as space to JSON.stringify() (boolean, number, or string, default: 0). When true, defaults to 2.


This package is fully typed with TypeScript. It exports the additional type Options.


Projects maintained by the unified collective are compatible with all maintained versions of Node.js. As of now, that is Node.js 12.20+, 14.14+, 16.0+, and 18.0+. Our projects sometimes work with older versions, but this is not guaranteed.


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.


MIT © Titus Wormer