Target Audience
- Developers new to Next.js
- Developers starting with Material-UI
- Web application development beginners
TL;DR
Type compatibility issues arise between Next.js and Material-UI components. The solution involves:
- Using proper type definitions with
UrlObject - Wrapping
MenuItemwithNextLinkinstead of using the component prop
Development Environment
- Next.js: 14.2.11
- Material UI: 6.1.0
- TypeScript: 5.0
The Problematic Code
Initially, when trying to combine MenuItem and NextLink directly, you'll encounter a type error:
interface MobileMenuProps {
menuItems: Array<{
href: string;
label: string;
}>;
}
export function MobileMenu({ menuItems }: MobileMenuProps) {
return (
<>
{menuItems.map((item) => (
<MenuItem
key={item.href}
component={NextLink}
href={item.href}
onClick={handleClose}
>
{item.label}
</MenuItem>
))}
</>
);
}
The Error
No overload matches this call.
Type '{ children: string; key: string; component: <RouteType>(props: LinkProps<RouteType>) => Element; href: string; onClick: () => void; }'
is not assignable to type 'IntrinsicAttributes & { href: string; } & MenuItemOwnProps & Omit<ButtonBaseOwnProps, "classes"> & CommonProps & Omit<...>'.
Property 'component' does not exist on type 'IntrinsicAttributes & { href: string; } & MenuItemOwnProps...'
The Solution
To resolve this issue, we need to make two key changes:
- Change the
hreftype fromstringtoUrlObject - Modify the component structure by wrapping
MenuItemwithNextLink
import { MenuItem } from "@mui/material";
import NextLink from "next/link";
import { UrlObject } from "url";
interface MobileMenuProps {
menuItems: {
href: UrlObject;
label: string;
}[];
}
export function MobileMenu({ menuItems }: MobileMenuProps) {
return (
<>
{menuItems.map((item) => (
<NextLink
passHref
href={item.href}
key={item.label}
style={{ textDecoration: "none", color: "inherit" }}
>
<MenuItem onClick={handleClose}>
{item.label}
</MenuItem>
</NextLink>
))}
</>
);
}
Key Changes Explained
-
Type Definition Changes
- Changed
hreftype fromstringtoUrlObjectfor better compatibility with Next.js type system -
UrlObjectis the expected type definition for Next.jsLinkcomponent, resolving the type issues
- Changed
-
Component Structure Changes
- Instead of using
MenuItemwithcomponent={NextLink}, we wrapMenuItemwithNextLink - Added
passHrefproperty to ensure proper link functionality - Added styling to override default link styles (optional)
- Instead of using
Summary
We encountered type compatibility issues between Next.js and Material-UI components. The solution involves using proper type definitions with UrlObject and restructuring the components by wrapping MenuItem with NextLink instead of using the component prop.
References
- Stack Overflow: ReactJS and TypeScript: refers to a value, but is being used as a type here (TS2749)
Tags: #typescript #nextjs #react #materialui
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