Add improved docs

Author: wooorm

readme.md

@@ -8,19 +8,54 @@
 [![Backers][backers-badge]][collective]
 [![Chat][chat-badge]][chat]
 
-[**unist**][unist] utility to get a position from an [**estree**][estree] node.
+[unist][] utility to get a position from an [estree][] node.
 
-## Install
+## Contents
+
+*   [What is this?](#what-is-this)
+*   [When should I use this?](#when-should-i-use-this)
+*   [Install](#install)
+*   [Use](#use)
+*   [API](#api)
+    *   [`positionFromEstree(node)`](#positionfromestreenode)
+*   [Types](#types)
+*   [Compatibility](#compatibility)
+*   [Contribute](#contribute)
+*   [License](#license)
+
+## What is this?
 
-This package is [ESM only](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c):
-Node 12+ is needed to use it and it must be `import`ed instead of `require`d.
+This package is a tiny utility that can create a proper unist position from
+an estree node
 
-[npm][]:
+## When should I use this?
+
+You can use this package when you want to use other unist utilities with estree
+nodes.
+
+## Install
+
+This package is [ESM only][esm].
+In Node.js (version 12.20+, 14.14+, 16.0+, or 18.0+), install with [npm][]:
 
 ```sh
 npm install unist-util-position-from-estree
 ```
 
+In Deno with [`esm.sh`][esmsh]:
+
+```js
+import {positionFromEstree} from 'https://esm.sh/unist-util-position-from-estree@1'
+```
+
+In browsers with [`esm.sh`][esmsh]:
+
+```html
+<script type="module">
+  import {positionFromEstree} from 'https://esm.sh/unist-util-position-from-estree@1?bundle'
+</script>
+```
+
 ## Use
 
 ```js
@@ -57,19 +92,29 @@ Yields:
 
 ## API
 
-This package exports the following identifiers: `positionFromEstree`.
+This package exports the identifier `positionFromEstree`.
 There is no default export.
 
 ### `positionFromEstree(node)`
 
 Given a [`node`][estree], returns a [`position`][position].
 
-## Related
+## Types
+
+This package is fully typed with [TypeScript][].
+It exports no additional types.
+
+## Compatibility
+
+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.
 
 ## Contribute
 
-See [`contributing.md` in `syntax-tree/.github`][contributing] for ways to get
-started.
+See [`contributing.md`][contributing] in [`syntax-tree/.github`][health] for
+ways to get started.
 See [`support.md`][support] for ways to get help.
 
 This project has a [code of conduct][coc].
@@ -110,15 +155,23 @@ abide by its terms.
 
 [npm]: https://docs.npmjs.com/cli/install
 
+[esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c
+
+[esmsh]: https://esm.sh
+
+[typescript]: https://www.typescriptlang.org
+
 [license]: license
 
 [author]: https://wooorm.com
 
-[contributing]: https://github.com/syntax-tree/.github/blob/HEAD/contributing.md
+[health]: https://github.com/syntax-tree/.github
+
+[contributing]: https://github.com/syntax-tree/.github/blob/main/contributing.md
 
-[support]: https://github.com/syntax-tree/.github/blob/HEAD/support.md
+[support]: https://github.com/syntax-tree/.github/blob/main/support.md
 
-[coc]: https://github.com/syntax-tree/.github/blob/HEAD/code-of-conduct.md
+[coc]: https://github.com/syntax-tree/.github/blob/main/code-of-conduct.md
 
 [estree]: https://github.com/estree/estree