Extract anyclip

client/normalize-trailing-slash.ts

@@ -0,0 +1,25 @@
+import { removeTrailingSlash } from '../shared/lib/router/utils/remove-trailing-slash'
+import { parsePath } from '../shared/lib/router/utils/parse-path'
+
+/**
+ * Normalizes the trailing slash of a path according to the `trailingSlash` option
+ * in `next.config.js`.
+ */
+export const normalizePathTrailingSlash = (path: string) => {
+  if (!path.startsWith('/') || process.env.__NEXT_MANUAL_TRAILING_SLASH) {
+    return path
+  }
+
+  const { pathname, query, hash } = parsePath(path)
+  if (process.env.__NEXT_TRAILING_SLASH) {
+    if (/\.[^/]+\/?$/.test(pathname)) {
+      return `${removeTrailingSlash(pathname)}${query}${hash}`
+    } else if (pathname.endsWith('/')) {
+      return `${pathname}${query}${hash}`
+    } else {
+      return `${pathname}/${query}${hash}`
+    }
+  }
+
+  return `${removeTrailingSlash(pathname)}${query}${hash}`
+}