docs(www): update manual installation (shadcn-ui#5817)

Author: shadcn

apps/www/content/docs/installation/manual.mdx

@@ -16,22 +16,14 @@ Components are styled using Tailwind CSS. You need to install Tailwind CSS in yo
 Add the following dependencies to your project:
 
 ```bash
-npm install tailwindcss-animate class-variance-authority clsx tailwind-merge
-```
-
-### Add icon library
-
-If you're using the `default` style, install `lucide-react`:
-
-```bash
-npm install lucide-react
+npm install tailwindcss-animate class-variance-authority clsx tailwind-merge lucide-react
 ```
 
 ### Configure path aliases
 
-I use the `@` alias. This is how I configure it in tsconfig.json:
+Configure the path aliases in your `tsconfig.json` file.
 
-```json {3-6} title="tsconfig.json"
+```json {3-6} title="tsconfig.json" showLineNumbers
 {
   "compilerOptions": {
     "baseUrl": ".",
@@ -44,27 +36,16 @@ I use the `@` alias. This is how I configure it in tsconfig.json:
 
 The `@` alias is a preference. You can use other aliases if you want.
 
-**If you use a different alias such as ~, you'll need to update import statements when adding components.**
-
 ### Configure tailwind.config.js
 
 Here's what my `tailwind.config.js` file looks like:
 
 ```js title="tailwind.config.js"
-const { fontFamily } = require("tailwindcss/defaultTheme")
-
 /** @type {import('tailwindcss').Config} */
 module.exports = {
   darkMode: ["class"],
   content: ["app/**/*.{ts,tsx}", "components/**/*.{ts,tsx}"],
   theme: {
-    container: {
-      center: true,
-      padding: "2rem",
-      screens: {
-        "2xl": "1400px",
-      },
-    },
     extend: {
       colors: {
         border: "hsl(var(--border))",
@@ -106,23 +87,6 @@ module.exports = {
         md: `calc(var(--radius) - 2px)`,
         sm: "calc(var(--radius) - 4px)",
       },
-      fontFamily: {
-        sans: ["var(--font-sans)", ...fontFamily.sans],
-      },
-      keyframes: {
-        "accordion-down": {
-          from: { height: "0" },
-          to: { height: "var(--radix-accordion-content-height)" },
-        },
-        "accordion-up": {
-          from: { height: "var(--radix-accordion-content-height)" },
-          to: { height: "0" },
-        },
-      },
-      animation: {
-        "accordion-down": "accordion-down 0.2s ease-out",
-        "accordion-up": "accordion-up 0.2s ease-out",
-      },
     },
   },
   plugins: [require("tailwindcss-animate")],
@@ -142,67 +106,46 @@ Add the following to your styles/globals.css file. You can learn more about usin
   :root {
     --background: 0 0% 100%;
     --foreground: 222.2 47.4% 11.2%;
-
     --muted: 210 40% 96.1%;
     --muted-foreground: 215.4 16.3% 46.9%;
-
     --popover: 0 0% 100%;
     --popover-foreground: 222.2 47.4% 11.2%;
-
     --border: 214.3 31.8% 91.4%;
     --input: 214.3 31.8% 91.4%;
-
     --card: 0 0% 100%;
     --card-foreground: 222.2 47.4% 11.2%;
-
     --primary: 222.2 47.4% 11.2%;
     --primary-foreground: 210 40% 98%;
-
     --secondary: 210 40% 96.1%;
     --secondary-foreground: 222.2 47.4% 11.2%;
-
     --accent: 210 40% 96.1%;
     --accent-foreground: 222.2 47.4% 11.2%;
-
     --destructive: 0 100% 50%;
     --destructive-foreground: 210 40% 98%;
-
     --ring: 215 20.2% 65.1%;
-
     --radius: 0.5rem;
   }
 
   .dark {
     --background: 224 71% 4%;
     --foreground: 213 31% 91%;
-
     --muted: 223 47% 11%;
     --muted-foreground: 215.4 16.3% 56.9%;
-
     --accent: 216 34% 17%;
     --accent-foreground: 210 40% 98%;
-
     --popover: 224 71% 4%;
     --popover-foreground: 215 20.2% 65.1%;
-
     --border: 216 34% 17%;
     --input: 216 34% 17%;
-
     --card: 224 71% 4%;
     --card-foreground: 213 31% 91%;
-
     --primary: 210 40% 98%;
     --primary-foreground: 222.2 47.4% 1.2%;
-
     --secondary: 222.2 47.4% 11.2%;
     --secondary-foreground: 210 40% 98%;
-
     --destructive: 0 63% 31%;
     --destructive-foreground: 210 40% 98%;
-
     --ring: 216 34% 17%;
-
-    --radius: 0.5rem;
   }
 }
 
@@ -211,17 +154,14 @@ Add the following to your styles/globals.css file. You can learn more about usin
     @apply border-border;
   }
   body {
-    @apply bg-background text-foreground;
-    font-feature-settings: "rlig" 1, "calt" 1;
+    @apply font-sans antialiased bg-background text-foreground;
   }
 }
 ```
 
 ### Add a cn helper
 
-I use a `cn` helper to make it easier to conditionally add Tailwind CSS classes. Here's how I define it in `lib/utils.ts`:
-
-```ts title="lib/utils.ts"
+```ts title="lib/utils.ts" showLineNumbers
 import { clsx, type ClassValue } from "clsx"
 import { twMerge } from "tailwind-merge"
 
@@ -230,6 +170,34 @@ export function cn(...inputs: ClassValue[]) {
 }
 ```
 
+### Create a `components.json` file
+
+Create a `components.json` file in the root of your project.
+
+```json title="components.json" showLineNumbers
+{
+  "$schema": "https://ui.shadcn.com/schema.json",
+  "style": "new-york",
+  "rsc": false,
+  "tsx": true,
+  "tailwind": {
+    "config": "tailwind.config.js",
+    "css": "src/index.css",
+    "baseColor": "zinc",
+    "cssVariables": true,
+    "prefix": ""
+  },
+  "aliases": {
+    "components": "@/components",
+    "utils": "@/lib/utils",
+    "ui": "@/components/ui",
+    "lib": "@/lib",
+    "hooks": "@/hooks"
+  },
+  "iconLibrary": "lucide"
+}
+```
+
 ### That's it
 
 You can now start adding components to your project.