Add improved types

Author: wooorm

readme.md

@@ -24,6 +24,7 @@
 *   [Types](#types)
 *   [Compatibility](#compatibility)
 *   [Related](#related)
+*   [Security](#security)
 *   [Contribute](#contribute)
 *   [License](#license)
 
@@ -41,7 +42,7 @@ If you have code, using something like [SWC][] or [esbuild][] instead.
 ## Install
 
 This package is [ESM only][esm].
-In Node.js (version 12.20+, 14.14+, or 16.0+), install with [npm][]:
+In Node.js (version 14.14+, 16.0+), install with [npm][]:
 
 ```sh
 npm install estree-util-build-jsx
@@ -224,22 +225,22 @@ they work on slightly different syntax trees.
 
 Some differences:
 
-*   No pure annotations things
+*   no pure annotations things
 *   `this` is not a component: `<this>` -> `h('this')`, not `h(this)`
-*   Namespaces are supported: `<a:b c:d>` -> `h('a:b', {'c:d': true})`,
+*   namespaces are supported: `<a:b c:d>` -> `h('a:b', {'c:d': true})`,
     which throws by default in Babel or can be turned on with `throwIfNamespace`
-*   No `useSpread`, `useBuiltIns`, or `filter` options
+*   no `useSpread`, `useBuiltIns`, or `filter` options
 
 ## Types
 
 This package is fully typed with [TypeScript][].
-It exports the types `Options` and `Node`.
+It exports the additional type `Options`.
 
 ## 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+, and 16.0+.
+As of now, that is Node.js 14.14+ and 16.0+.
 Our projects sometimes work with older versions, but this is not guaranteed.
 
 ## Related
@@ -250,6 +251,10 @@ Our projects sometimes work with older versions, but this is not guaranteed.
 *   [`coderaiser/estree-to-babel`](https://github.com/coderaiser/estree-to-babel)
     — turn [estree][] to Babel trees
 
+## Security
+
+This package is safe.
+
 ## Contribute
 
 See [`contributing.md` in `syntax-tree/.github`][contributing] for ways to get