rsnext/packages/next/server/router-utils.ts
Malte Ubl 6da769129e
Reduce hello-world middleware bundle size from 128k to 88k (#35512)
Moves two utility functions from `server/router.ts` into their own file. This avoids the middleware pulling in the full Next.js router into its bundle.

There are probably more opportunities like this, but this is a good start. Middleware should likely be bundled by a non-chunking optimizing compiler.
2022-03-22 14:54:05 +00:00

17 lines
628 B
TypeScript

export function replaceBasePath(pathname: string, basePath: string): string {
// ensure basePath is only stripped if it matches exactly
// and doesn't contain extra chars e.g. basePath /docs
// should replace for /docs, /docs/, /docs/a but not /docsss
if (hasBasePath(pathname, basePath)) {
pathname = pathname.substr(basePath.length)
if (!pathname.startsWith('/')) pathname = `/${pathname}`
}
return pathname
}
export function hasBasePath(pathname: string, basePath: string): boolean {
return (
typeof pathname === 'string' &&
(pathname === basePath || pathname.startsWith(basePath + '/'))
)
}