docs: refine TS guides

setup.md

@@ -1,6 +1,7 @@
 # Setup
 
 ## Requirements
+* Linux, macOS, or Windows
 * JavaScript Runtime:
   * Node.js 12.17.0 or later
   * Bun 1.0.0 or later

typescript.md

@@ -1,28 +1,59 @@
 # TypeScript
 
-Configure your project to use [ES modules](https://nodejs.org/api/packages.html#packages_type):
+zx is written in TypeScript and provides the corresponding libdefs out of box. Typings are TS 4+ compatible.
+
+```ts
+// script.ts
+import { $ } from 'zx'
+
+const list = await $`ls -la`
+```
+
+Some runtimes like [Bun](https://bun.sh/) or [Deno](https://deno.com/) have built-in TS support, so you can use zx directly. Node.js requires additional setup. Configure your project according to the [ES modules contract](https://nodejs.org/api/packages.html#packages_type):
 
 - Set [`"type": "module"`](https://nodejs.org/api/packages.html#packages_type)
 in **package.json**
 - Set [`"module": "ESNext"`](https://www.typescriptlang.org/tsconfig/#module)
 in **tsconfig.json**.
 
-It is possible to make use of `$` and other functions via explicit imports:
+Using TypeScript compiler is the most straightforward way.
 
-```ts
-import { $ } from 'zx'
+::: code-group
+
+```bash [tsc]
+npm install typescript
+
+tsc script.ts
+
+node script.js
 ```
 
-Or import globals explicitly:
+```bash [ts-node]
+npm install ts-node
 
-```ts
-import 'zx/globals'
+ts-node script.ts
+# or via node loader
+node --loader ts-node/esm script.ts
 ```
 
-Wrap your code in an async function and call it immediately:
+```bash [swc-node]
+npm install swc-node
 
-```ts
-void async function () {
-  await $`ls -la`
-}()
+swc-node script.ts
+```
+
+```bash [tsx]
+npm install tsx
+
+tsx script.ts
 ```
+
+```bash [bun]
+bun script.ts
+```
+
+```bash [deno]
+deno run --allow-read --allow-sys --allow-env --allow-run script.ts
+```
+
+:::