feat(builder, router): enforce uniform trailing slash handling (#6331)

packages/builder/src/builder.js

@@ -337,12 +337,14 @@ export default class Builder {
 
   async resolveRoutes ({ templateVars }) {
     consola.debug('Generating routes...')
+    const { routeNameSplitter, trailingSlash } = this.options.router
 
     if (this._defaultPage) {
       templateVars.router.routes = createRoutes({
         files: ['index.vue'],
         srcDir: this.template.dir + '/pages',
-        routeNameSplitter: this.options.router.routeNameSplitter
+        routeNameSplitter,
+        trailingSlash
       })
     } else if (this._nuxtPages) {
       // Use nuxt.js createRoutes bases on pages/
@@ -359,8 +361,9 @@ export default class Builder {
         files: Object.values(files),
         srcDir: this.options.srcDir,
         pagesDir: this.options.dir.pages,
-        routeNameSplitter: this.options.router.routeNameSplitter,
+        routeNameSplitter,
-        supportedExtensions: this.supportedExtensions
+        supportedExtensions: this.supportedExtensions,
+        trailingSlash
       })
     } else { // If user defined a custom method to create routes
       templateVars.router.routes = this.options.build.createRoutes(

packages/config/src/config/router.js

@@ -12,5 +12,6 @@ export default () => ({
   parseQuery: false,
   stringifyQuery: false,
   fallback: false,
-  prefetchLinks: true
+  prefetchLinks: true,
+  trailingSlash: undefined
 })

packages/config/test/__snapshots__/options.test.js.snap

@@ -322,6 +322,7 @@ Object {
     "routes": Array [],
     "scrollBehavior": null,
     "stringifyQuery": false,
+    "trailingSlash": undefined,
   },
   "server": Object {
     "host": "localhost",

packages/config/test/config/__snapshots__/index.test.js.snap

@@ -289,6 +289,7 @@ Object {
     "routes": Array [],
     "scrollBehavior": null,
     "stringifyQuery": false,
+    "trailingSlash": undefined,
   },
   "server": Object {
     "host": "localhost",
@@ -618,6 +619,7 @@ Object {
     "routes": Array [],
     "scrollBehavior": null,
     "stringifyQuery": false,
+    "trailingSlash": undefined,
   },
   "server": Object {
     "host": "localhost",

packages/utils/src/route.js

@@ -136,7 +136,8 @@ export const createRoutes = function createRoutes ({
   srcDir,
   pagesDir = '',
   routeNameSplitter = '-',
-  supportedExtensions = ['vue', 'js']
+  supportedExtensions = ['vue', 'js'],
+  trailingSlash
 }) {
   const routes = []
   files.forEach((file) => {
@@ -173,6 +174,11 @@ export const createRoutes = function createRoutes ({
         }
       }
     })
+    if (trailingSlash !== undefined) {
+      route.pathToRegexpOptions = { ...route.pathToRegexpOptions, strict: true }
+      route.path = route.path.replace(/\/+$/, '') + (trailingSlash ? '/' : '')
+    }
+
     parent.push(route)
   })
 

packages/utils/test/__snapshots__/route.test.js.snap

@@ -119,3 +119,178 @@ Array [
   },
 ]
 `;
+
+exports[`util: route util: route create createRoutes should enforce trailing slashes when configured to 1`] = `
+Array [
+  Object {
+    "chunkName": "pages/parent/index",
+    "component": "/some/nuxt/app/pages/parent/index.vue",
+    "name": "parent",
+    "path": "/parent/",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/snake_case_route",
+    "component": "/some/nuxt/app/pages/snake_case_route.vue",
+    "name": "snake_case_route",
+    "path": "/snake_case_route/",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/parent/child/index",
+    "component": "/some/nuxt/app/pages/parent/child/index.vue",
+    "name": "parent-child",
+    "path": "/parent/child/",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/parent/child/test",
+    "component": "/some/nuxt/app/pages/parent/child/test.vue",
+    "name": "parent-child-test",
+    "path": "/parent/child/test/",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "children": Array [
+      Object {
+        "chunkName": "pages/another_route/_id",
+        "component": "/some/nuxt/app/pages/another_route/_id.vue",
+        "name": "another_route-id",
+        "path": "",
+        "pathToRegexpOptions": Object {
+          "strict": true,
+        },
+      },
+    ],
+    "chunkName": "pages/another_route/_id",
+    "component": "/some/nuxt/app/pages/another_route/_id.vue",
+    "name": "another_route-id",
+    "path": "/another_route/:id?/",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/subpage/_param",
+    "component": "/some/nuxt/app/pages/subpage/_param.vue",
+    "name": "subpage-param",
+    "path": "/subpage/:param?/",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/index",
+    "component": "/some/nuxt/app/pages/index.vue",
+    "name": "index",
+    "path": "/",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/_param",
+    "component": "/some/nuxt/app/pages/_param.vue",
+    "name": "param",
+    "path": "/:param/",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+]
+`;
+
+exports[`util: route util: route create createRoutes should remove trailing slashes when configured to 1`] = `
+Array [
+  Object {
+    "chunkName": "pages/index",
+    "component": "/some/nuxt/app/pages/index.vue",
+    "name": "index",
+    "path": "",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/parent/index",
+    "component": "/some/nuxt/app/pages/parent/index.vue",
+    "name": "parent",
+    "path": "/parent",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/snake_case_route",
+    "component": "/some/nuxt/app/pages/snake_case_route.vue",
+    "name": "snake_case_route",
+    "path": "/snake_case_route",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/parent/child/index",
+    "component": "/some/nuxt/app/pages/parent/child/index.vue",
+    "name": "parent-child",
+    "path": "/parent/child",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/parent/child/test",
+    "component": "/some/nuxt/app/pages/parent/child/test.vue",
+    "name": "parent-child-test",
+    "path": "/parent/child/test",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "children": Array [
+      Object {
+        "chunkName": "pages/another_route/_id",
+        "component": "/some/nuxt/app/pages/another_route/_id.vue",
+        "name": "another_route-id",
+        "path": "",
+        "pathToRegexpOptions": Object {
+          "strict": true,
+        },
+      },
+    ],
+    "chunkName": "pages/another_route/_id",
+    "component": "/some/nuxt/app/pages/another_route/_id.vue",
+    "path": "/another_route/:id?",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/subpage/_param",
+    "component": "/some/nuxt/app/pages/subpage/_param.vue",
+    "name": "subpage-param",
+    "path": "/subpage/:param?",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+  Object {
+    "chunkName": "pages/_param",
+    "component": "/some/nuxt/app/pages/_param.vue",
+    "name": "param",
+    "path": "/:param",
+    "pathToRegexpOptions": Object {
+      "strict": true,
+    },
+  },
+]
+`;

packages/utils/test/route.test.js

@@ -194,5 +194,15 @@ describe('util: route', () => {
       const routesResult = createRoutes({ files, srcDir, pagesDir })
       expect(routesResult).toMatchSnapshot()
     })
+
+    test.posix('createRoutes should enforce trailing slashes when configured to', () => {
+      const routesResult = createRoutes({ files, srcDir, pagesDir, trailingSlash: true })
+      expect(routesResult).toMatchSnapshot()
+    })
+
+    test.posix('createRoutes should remove trailing slashes when configured to', () => {
+      const routesResult = createRoutes({ files, srcDir, pagesDir, trailingSlash: false })
+      expect(routesResult).toMatchSnapshot()
+    })
   })
 })