I have created a project using Tanstack Start. I am using tailwind.css, shadcn-ui and some components from https://supercharged-shadcn-components.dykennethryan.com. Everything was going OK until I installed the supercharged-shadcn-components and they ended up in the wrong location in the project. I removed all the UI component and changed tsconfig.json to read:
"paths": {
"@/*": ["./*"]
},
and then reinstalled all the UI components.
The imports all now seem to be working correctly but I'm getting the above error from PostCSS. I don't really know where to look to solve this error so here are some files in case they're useful.
The import for the css is in __root.tsx which looks like:
import { QueryClient } from "@tanstack/react-query";
import {
HeadContent,
Outlet,
Scripts,
createRootRouteWithContext
} from '@tanstack/react-router'
import { TanStackRouterDevtools } from '@tanstack/router-devtools'
import * as React from 'react'
import { DefaultCatchBoundary } from '@/components/DefaultCatchBoundary'
import { NotFound } from '@/components/NotFound'
**import appCss from '@/app/styles/globals.css?url'**
import { seo } from '@/app/utils/seo'
import { ClerkProvider } from '@clerk/tanstack-start'
export const Route = createRootRouteWithContext<{
queryClient: QueryClient;
}>()({
head: () => ({
meta: [
{
charSet: 'utf-8',
},
{
name: 'viewport',
content: 'width=device-width, initial-scale=1',
},
...seo({
title:
'TanStack Start | Type-Safe, Client-First, Full-Stack React Framework',
description: `TanStack Start is a type-safe, client-first, full-stack React framework. `,
}),
],
links: [
{ rel: 'stylesheet', href: appCss },
{
rel: 'apple-touch-icon',
sizes: '180x180',
href: '/apple-touch-icon.png',
},
{
rel: 'icon',
type: 'image/png',
sizes: '32x32',
href: '/favicon-32x32.png',
},
{
rel: 'icon',
type: 'image/png',
sizes: '16x16',
href: '/favicon-16x16.png',
},
{ rel: 'manifest', href: '/site.webmanifest', color: '#fffff' },
{ rel: 'icon', href: '/favicon.ico' },
],
}),
errorComponent: (props) => {
return (
<RootDocument>
<DefaultCatchBoundary {...props} />
</RootDocument>
)
},
notFoundComponent: () => <NotFound />,
component: RootComponent,
})
function RootComponent() {
return (
<RootDocument>
<Outlet />
</RootDocument>
)
}
function RootDocument({ children }: { children: React.ReactNode }) {
return (
<ClerkProvider>
<html>
<head>
<HeadContent />
</head>
<body>
<hr />
{children}
<TanStackRouterDevtools position="bottom-right" />
<Scripts />
</body>
</html>
</ClerkProvider>
)
}
the globals.css file:
@import 'tailwindcss';
@plugin "tailwindcss-animate";
@custom-variant dark (&:is(.dark *));
body {
@apply m-0;
font-family:
-apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu',
'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
code {
font-family:
source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace;
}
:root {
--background: oklch(1 0 0);
--foreground: oklch(0.141 0.005 285.823);
--card: oklch(1 0 0);
--card-foreground: oklch(0.141 0.005 285.823);
--popover: oklch(1 0 0);
--popover-foreground: oklch(0.141 0.005 285.823);
--primary: oklch(0.21 0.006 285.885);
--primary-foreground: oklch(0.985 0 0);
--secondary: oklch(0.967 0.001 286.375);
--secondary-foreground: oklch(0.21 0.006 285.885);
--muted: oklch(0.967 0.001 286.375);
--muted-foreground: oklch(0.552 0.016 285.938);
--accent: oklch(0.967 0.001 286.375);
--accent-foreground: oklch(0.21 0.006 285.885);
--destructive: oklch(0.577 0.245 27.325);
--destructive-foreground: oklch(0.577 0.245 27.325);
--border: oklch(0.92 0.004 286.32);
--input: oklch(0.92 0.004 286.32);
--ring: oklch(0.871 0.006 286.286);
--chart-1: oklch(0.646 0.222 41.116);
--chart-2: oklch(0.6 0.118 184.704);
--chart-3: oklch(0.398 0.07 227.392);
--chart-4: oklch(0.828 0.189 84.429);
--chart-5: oklch(0.769 0.188 70.08);
--radius: 0.625rem;
--sidebar: oklch(0.985 0 0);
--sidebar-foreground: oklch(0.141 0.005 285.823);
--sidebar-primary: oklch(0.21 0.006 285.885);
--sidebar-primary-foreground: oklch(0.985 0 0);
--sidebar-accent: oklch(0.967 0.001 286.375);
--sidebar-accent-foreground: oklch(0.21 0.006 285.885);
--sidebar-border: oklch(0.92 0.004 286.32);
--sidebar-ring: oklch(0.871 0.006 286.286);
}
.dark {
--background: oklch(0.141 0.005 285.823);
--foreground: oklch(0.985 0 0);
--card: oklch(0.141 0.005 285.823);
--card-foreground: oklch(0.985 0 0);
--popover: oklch(0.141 0.005 285.823);
--popover-foreground: oklch(0.985 0 0);
--primary: oklch(0.985 0 0);
--primary-foreground: oklch(0.21 0.006 285.885);
--secondary: oklch(0.274 0.006 286.033);
--secondary-foreground: oklch(0.985 0 0);
--muted: oklch(0.274 0.006 286.033);
--muted-foreground: oklch(0.705 0.015 286.067);
--accent: oklch(0.274 0.006 286.033);
--accent-foreground: oklch(0.985 0 0);
--destructive: oklch(0.396 0.141 25.723);
--destructive-foreground: oklch(0.637 0.237 25.331);
--border: oklch(0.274 0.006 286.033);
--input: oklch(0.274 0.006 286.033);
--ring: oklch(0.442 0.017 285.786);
--chart-1: oklch(0.488 0.243 264.376);
--chart-2: oklch(0.696 0.17 162.48);
--chart-3: oklch(0.769 0.188 70.08);
--chart-4: oklch(0.627 0.265 303.9);
--chart-5: oklch(0.645 0.246 16.439);
--sidebar: oklch(0.21 0.006 285.885);
--sidebar-foreground: oklch(0.985 0 0);
--sidebar-primary: oklch(0.488 0.243 264.376);
--sidebar-primary-foreground: oklch(0.985 0 0);
--sidebar-accent: oklch(0.274 0.006 286.033);
--sidebar-accent-foreground: oklch(0.985 0 0);
--sidebar-border: oklch(0.274 0.006 286.033);
--sidebar-ring: oklch(0.442 0.017 285.786);
}
@theme inline {
--color-background: var(--background);
--color-foreground: var(--foreground);
--color-card: var(--card);
--color-card-foreground: var(--card-foreground);
--color-popover: var(--popover);
--color-popover-foreground: var(--popover-foreground);
--color-primary: var(--primary);
--color-primary-foreground: var(--primary-foreground);
--color-secondary: var(--secondary);
--color-secondary-foreground: var(--secondary-foreground);
--color-muted: var(--muted);
--color-muted-foreground: var(--muted-foreground);
--color-accent: var(--accent);
--color-accent-foreground: var(--accent-foreground);
--color-destructive: var(--destructive);
--color-destructive-foreground: var(--destructive-foreground);
--color-border: var(--border);
--color-input: var(--input);
--color-ring: var(--ring);
--color-chart-1: var(--chart-1);
--color-chart-2: var(--chart-2);
--color-chart-3: var(--chart-3);
--color-chart-4: var(--chart-4);
--color-chart-5: var(--chart-5);
--radius-sm: calc(var(--radius) - 4px);
--radius-md: calc(var(--radius) - 2px);
--radius-lg: var(--radius);
--radius-xl: calc(var(--radius) + 4px);
--color-sidebar: var(--sidebar);
--color-sidebar-foreground: var(--sidebar-foreground);
--color-sidebar-primary: var(--sidebar-primary);
--color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
--color-sidebar-accent: var(--sidebar-accent);
--color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
--color-sidebar-border: var(--sidebar-border);
--color-sidebar-ring: var(--sidebar-ring);
}
@layer base {
* {
@apply border-border outline-ring/50;
}
body {
@apply bg-background text-foreground;
}
}
components.json:
{
"$schema": "https://ui.shadcn.com/schema.json",
"style": "new-york",
"rsc": false,
"tsx": true,
"tailwind": {
"config": "",
"css": "@app/styles/globals.css",
"baseColor": "neutral",
"cssVariables": true,
"prefix": ""
},
"aliases": {
"components": "@/components",
"utils": "@/lib/utils",
"ui": "@/components/ui",
"lib": "@/lib",
"hooks": "@/hooks"
},
"iconLibrary": "lucide"
}
Although you didn't share the list of installed packages or the PostCSS configuration file, I believe you're mistakenly trying to load the tailwindcss package in PostCSS, which worked fine up to v3. However, starting from v4, they split the plugins needed for the CLI and PostCSS from the main tailwind package. As a result, the PostCSS plugin is now in a separate package: @tailwindcss/postcss and @tailwindcss/cli.
The first step is to remove the unnecessary packages - which I don't fully know since you are not mentioned in the question -:
npm uninstall tailwindcss postcss-import autoprefixer
Even if you want to integrate TailwindCSS with PostCSS at this point, you only need tailwindcss, postcss, and @tailwindcss/postcss, like this:
npm install tailwindcss @tailwindcss/postcss postcss
postcss.config.mjs
export default {
plugins: {
"@tailwindcss/postcss": {}, /* instead of tailwindcss */
}
}