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 130
  4. unist-util 25
  5. node 25
  6. javascript 24
  7. estree 9
  8. ecmascript 9
  9. position 9
  10. esast 5
  11. recma 3


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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 14.14+ and 16.0+), 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@1'

In browsers with esm.sh:

<script type="module">
  import {positionFromEstree} from 'https://esm.sh/unist-util-position-from-estree@1?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 (Position).


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


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.


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