Project: syntax-tree/unist-util-position-from-estree

Package: unist-util-position-from-estree@1.1.1

  1. Dependents: 0
  2. unist utility to get a position from an estree node
  1. util 145
  2. utility 141
  3. unist 132
  4. javascript 26
  5. unist-util 25
  6. node 24
  7. ecmascript 10
  8. estree 9
  9. position 9
  10. esast 5
  11. recma 3


Build Coverage Downloads Size Sponsors Backers Chat

unist utility to get a position from an estree node.


What is this?

This package is a tiny utility that can create a proper unist position from an estree node

When should I use this?

You can use this package when you want to use other unist utilities with estree nodes.


This package is ESM only. In Node.js (version 16+), install with npm:

npm install unist-util-position-from-estree

In Deno with esm.sh:

import {positionFromEstree} from 'https://esm.sh/unist-util-position-from-estree@2'

In browsers with esm.sh:

<script type="module">
  import {positionFromEstree} from 'https://esm.sh/unist-util-position-from-estree@2?bundle'


import {parse} from 'acorn'
import {positionFromEstree} from 'unist-util-position-from-estree'

// Make acorn support line/column.
const node = parse('function x() { console.log(1) }', {
  ecmaVersion: 2020,
  locations: true

console.log(positionFromEstree(node)) // `Program`
console.log(positionFromEstree(node.body[0].id)) // `x`
console.log(positionFromEstree(node.body[0].body.body[0].expression)) // Call


  start: {line: 1, column: 1, offset: 0},
  end: {line: 1, column: 32, offset: 31}
  start: {line: 1, column: 10, offset: 9},
  end: {line: 1, column: 11, offset: 10}
  start: {line: 1, column: 16, offset: 15},
  end: {line: 1, column: 30, offset: 29}


This package exports the identifier positionFromEstree. There is no default export.


Turn an estree node into a unist position.


unist position, if valid (Position or undefined).


This package is fully typed with TypeScript. It exports no additional types.


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, unist-util-position-from-estree@^2, compatible with Node.js 16.


See contributing.md in syntax-tree/.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