fix: fixes specifying / as a path for v2 api functions

src/lib/functions/netlify-function.mjs

@@ -173,7 +173,8 @@ export default class NetlifyFunction {
   async matchURLPath(rawPath, method) {
     await this.buildQueue
 
-    const path = (rawPath.endsWith('/') ? rawPath.slice(0, -1) : rawPath).toLowerCase()
+    let path = rawPath !== '/' && rawPath.endsWith('/') ? rawPath.slice(0, -1) : rawPath
+    path = path.toLowerCase()
     const { routes = [] } = this.buildData
     return routes.find(({ expression, literal, methods }) => {
       if (methods.length !== 0 && !methods.includes(method)) {

tests/integration/__fixtures__/dev-server-with-v2-functions/functions/custom-path-catchall.mjs

@@ -0,0 +1,6 @@
+export default async (req) => new Response(`Catchall Path`)
+
+export const config = {
+  path: '/*',
+  method: 'PATCH',
+}

tests/integration/__fixtures__/dev-server-with-v2-functions/functions/custom-path-root.mjs

@@ -0,0 +1,6 @@
+export default async (req) => new Response(`With literal path: ${req.url}`)
+
+export const config = {
+  path: '/',
+  method: 'GET'
+}

tests/integration/commands/dev/v2-api.test.ts

@@ -132,6 +132,21 @@ describe.runIf(gte(version, '18.13.0'))('v2 api', () => {
       expect(await response.text()).toBe(`With expression path: {"sku":"netlify"}`)
     })
 
+    test<FixtureTestContext>('should serve the custom path ath the / route as specified in the in source config', async ({
+      devServer,
+    }) => {
+      const url = `http://localhost:${devServer.port}/`
+      const response = await fetch(url)
+      expect(response.status).toBe(200)
+      expect(await response.text()).toBe(`With literal path: http://localhost:${devServer.port}/`)
+    })
+
+    test<FixtureTestContext>('catchall path applies to root path', async ({ devServer }) => {
+      const response = await fetch( `http://localhost:${devServer.port}/`, { method:"PATCH"})
+      expect(response.status).toBe(200)
+      expect(await response.text()).toBe(`Catchall Path`)
+    })
+
     test<FixtureTestContext>('returns 404 when using the default function URL to access a function with custom routes', async ({
       devServer,
     }) => {