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Fix shallow routing scroll #21437

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merged 3 commits into from Jan 22, 2021
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kaykdm
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@kaykdm kaykdm commented Jan 22, 2021

This ensures that Next.js will not scroll to the top of the page in shallow routing.

Fixes: #21386
Fixes: #21366

@ijjk
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ijjk commented Jan 22, 2021

Stats from current PR

Default Server Mode (Increase detected ⚠️)
General Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
buildDuration 10.2s 10.2s ⚠️ +13ms
nodeModulesSize 73.3 MB 73.3 MB ⚠️ +451 B
Page Load Tests Overall decrease ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
/ failed reqs 0 0
/ total time (seconds) 2.02 2.053 ⚠️ +0.03
/ avg req/sec 1237.77 1217.93 ⚠️ -19.84
/error-in-render failed reqs 0 0
/error-in-render total time (seconds) 1.221 1.254 ⚠️ +0.03
/error-in-render avg req/sec 2047.57 1994.38 ⚠️ -53.19
Client Bundles (main, webpack, commons) Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
677f882d2ed8..bb74.js gzip 13.1 kB 13.1 kB ⚠️ +14 B
framework.HASH.js gzip 39 kB 39 kB
main-HASH.js gzip 6.63 kB 6.63 kB
webpack-HASH.js gzip 751 B 751 B
Overall change 59.4 kB 59.4 kB ⚠️ +14 B
Legacy Client Bundles (polyfills)
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
polyfills-HASH.js gzip 31.3 kB 31.3 kB
Overall change 31.3 kB 31.3 kB
Client Pages
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_app-2a09aa2..4a98.js gzip 1.28 kB 1.28 kB
_error-8b758..aef6.js gzip 3.46 kB 3.46 kB
hooks-c71ae4..70cd.js gzip 887 B 887 B
index-bbee2f..528b.js gzip 227 B 227 B
link-7faf09b..eba4.js gzip 1.64 kB 1.64 kB
routerDirect..bf84.js gzip 303 B 303 B
withRouter-a..5826.js gzip 302 B 302 B
Overall change 8.09 kB 8.09 kB
Client Build Manifests
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_buildManifest.js gzip 321 B 321 B
Overall change 321 B 321 B
Rendered Page Sizes Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
index.html gzip 613 B 614 B ⚠️ +1 B
link.html gzip 620 B 620 B
withRouter.html gzip 608 B 608 B
Overall change 1.84 kB 1.84 kB ⚠️ +1 B

Diffs

Diff for 677f882d2ed8..ac9dfbed6.js
@@ -1860,7 +1860,8 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                     newUrl,
                     newAs,
                     notFoundRoute,
-                    appComp;
+                    appComp,
+                    isValidShallowRoute;
 
                   return _regeneratorRuntime.wrap(
                     function _callee$(_context) {
@@ -2324,9 +2325,11 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                             this.changeState(method, url, as, options);
 
                             if (false) {
-                            }
+                            } // shallow routing is only allowed for same page URL changes.
 
-                            _context.next = 113;
+                            isValidShallowRoute =
+                              options.shallow && this.route === route;
+                            _context.next = 114;
                             return this.set(
                               route,
                               pathname,
@@ -2334,20 +2337,20 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                               cleanedAs,
                               routeInfo,
                               forcedScroll ||
-                                (options.scroll
-                                  ? {
+                                (isValidShallowRoute || !options.scroll
+                                  ? null
+                                  : {
                                       x: 0,
                                       y: 0
-                                    }
-                                  : null)
+                                    })
                             )["catch"](function(e) {
                               if (e.cancelled) error = error || e;
                               else throw e;
                             });
 
-                          case 113:
+                          case 114:
                             if (!error) {
-                              _context.next = 116;
+                              _context.next = 117;
                               break;
                             }
 
@@ -2359,7 +2362,7 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                             );
                             throw error;
 
-                          case 116:
+                          case 117:
                             if (false) {
                             }
 
@@ -2370,21 +2373,21 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                             );
                             return _context.abrupt("return", true);
 
-                          case 121:
-                            _context.prev = 121;
+                          case 122:
+                            _context.prev = 122;
                             _context.t2 = _context["catch"](79);
 
                             if (!_context.t2.cancelled) {
-                              _context.next = 125;
+                              _context.next = 126;
                               break;
                             }
 
                             return _context.abrupt("return", false);
 
-                          case 125:
+                          case 126:
                             throw _context.t2;
 
-                          case 126:
+                          case 127:
                           case "end":
                             return _context.stop();
                         }
@@ -2394,7 +2397,7 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                     this,
                     [
                       [36, 46],
-                      [79, 121],
+                      [79, 122],
                       [96, 102]
                     ]
                   );
Diff for index.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       as="script"
     />
     <link
@@ -65,7 +65,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       async=""
     ></script>
     <script
Diff for link.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       as="script"
     />
     <link
@@ -70,7 +70,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       async=""
     ></script>
     <script
Diff for withRouter.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       as="script"
     />
     <link
@@ -65,7 +65,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       async=""
     ></script>
     <script

Serverless Mode (Increase detected ⚠️)
General Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
buildDuration 12s 12.1s ⚠️ +45ms
nodeModulesSize 73.3 MB 73.3 MB ⚠️ +451 B
Client Bundles (main, webpack, commons) Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
677f882d2ed8..bb74.js gzip 13.1 kB N/A N/A
framework.HASH.js gzip 39 kB 39 kB
main-HASH.js gzip 6.63 kB 6.63 kB
webpack-HASH.js gzip 751 B 751 B
677f882d2ed8..38ed.js gzip N/A 13.1 kB N/A
Overall change 59.4 kB 59.4 kB ⚠️ +14 B
Legacy Client Bundles (polyfills)
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
polyfills-HASH.js gzip 31.3 kB 31.3 kB
Overall change 31.3 kB 31.3 kB
Client Pages
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_app-2a09aa2..4a98.js gzip 1.28 kB 1.28 kB
_error-8b758..aef6.js gzip 3.46 kB 3.46 kB
hooks-c71ae4..70cd.js gzip 887 B 887 B
index-bbee2f..528b.js gzip 227 B 227 B
link-7faf09b..eba4.js gzip 1.64 kB 1.64 kB
routerDirect..bf84.js gzip 303 B 303 B
withRouter-a..5826.js gzip 302 B 302 B
Overall change 8.09 kB 8.09 kB
Client Build Manifests
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_buildManifest.js gzip 321 B 321 B
Overall change 321 B 321 B
Serverless bundles Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_error.js 1 MB 1 MB
404.html 2.67 kB 2.67 kB
hooks.html 1.92 kB 1.92 kB
index.js 1 MB 1 MB
link.js 1.06 MB 1.06 MB ⚠️ +162 B
routerDirect.js 1.05 MB 1.05 MB ⚠️ +162 B
withRouter.js 1.05 MB 1.05 MB ⚠️ +162 B
Overall change 5.19 MB 5.19 MB ⚠️ +486 B

Webpack 5 Mode (Increase detected ⚠️)
General Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
buildDuration 12.4s 12.3s -145ms
nodeModulesSize 73.3 MB 73.3 MB ⚠️ +451 B
Page Load Tests Overall decrease ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
/ failed reqs 0 0
/ total time (seconds) 2.014 2.025 ⚠️ +0.01
/ avg req/sec 1241.02 1234.67 ⚠️ -6.35
/error-in-render failed reqs 0 0
/error-in-render total time (seconds) 1.221 1.275 ⚠️ +0.05
/error-in-render avg req/sec 2047.68 1960.32 ⚠️ -87.36
Client Bundles (main, webpack, commons) Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
597-168f5a87..2380.js gzip 13 kB 13 kB ⚠️ +13 B
framework.HASH.js gzip 39.3 kB 39.3 kB
main-HASH.js gzip 6.58 kB 6.58 kB
webpack-HASH.js gzip 954 B 954 B
Overall change 59.8 kB 59.8 kB ⚠️ +13 B
Legacy Client Bundles (polyfills)
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
polyfills-HASH.js gzip 31.1 kB 31.1 kB
Overall change 31.1 kB 31.1 kB
Client Pages
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_app-a5b2e84..33cf.js gzip 1.26 kB 1.26 kB
_error-6f1f9..5577.js gzip 3.38 kB 3.38 kB
hooks-725de8..0a15.js gzip 904 B 904 B
index-939503..6e1c.js gzip 232 B 232 B
link-e0cc871..fdbb.js gzip 1.63 kB 1.63 kB
routerDirect..9360.js gzip 308 B 308 B
withRouter-6..44ec.js gzip 304 B 304 B
Overall change 8.02 kB 8.02 kB
Client Build Manifests
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_buildManifest.js gzip 299 B 299 B
Overall change 299 B 299 B
Rendered Page Sizes Overall decrease ✓
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
index.html gzip 588 B 588 B
link.html gzip 593 B 593 B
withRouter.html gzip 583 B 581 B -2 B
Overall change 1.76 kB 1.76 kB -2 B

Diffs

Diff for 677f882d2ed8..d6246bb74.js
@@ -1066,7 +1066,8 @@
                       K,
                       tt,
                       et,
-                      rt;
+                      rt,
+                      nt;
                     return n.wrap(
                       function(e) {
                         for (;;)
@@ -1312,44 +1313,45 @@
                               return (
                                 t.events.emit("beforeHistoryChange", a, g),
                                 this.changeState(r, o, a, i),
-                                (e.next = 113),
+                                (nt = i.shallow && this.route === D),
+                                (e.next = 114),
                                 this.set(
                                   D,
                                   C,
                                   I,
                                   w,
                                   V,
-                                  u || (i.scroll ? { x: 0, y: 0 } : null)
+                                  u || (nt || !i.scroll ? null : { x: 0, y: 0 })
                                 ).catch(function(t) {
                                   if (!t.cancelled) throw t;
                                   z = z || t;
                                 })
                               );
-                            case 113:
+                            case 114:
                               if (!z) {
-                                e.next = 116;
+                                e.next = 117;
                                 break;
                               }
                               throw (t.events.emit("routeChangeError", z, w, g),
                               z);
-                            case 116:
+                            case 117:
                               return (
                                 t.events.emit("routeChangeComplete", a, g),
                                 e.abrupt("return", !0)
                               );
-                            case 121:
+                            case 122:
                               if (
-                                ((e.prev = 121),
+                                ((e.prev = 122),
                                 (e.t2 = e.catch(79)),
                                 !e.t2.cancelled)
                               ) {
-                                e.next = 125;
+                                e.next = 126;
                                 break;
                               }
                               return e.abrupt("return", !1);
-                            case 125:
-                              throw e.t2;
                             case 126:
+                              throw e.t2;
+                            case 127:
                             case "end":
                               return e.stop();
                           }
@@ -1358,7 +1360,7 @@
                       this,
                       [
                         [36, 46],
-                        [79, 121],
+                        [79, 122],
                         [96, 102]
                       ]
                     );
Diff for index.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       as="script"
     />
     <link
@@ -43,7 +43,7 @@
         "props": { "pageProps": {} },
         "page": "/",
         "query": {},
-        "buildId": "51ENqzeG_ld23MHGjh6-z",
+        "buildId": "CtBNshUp_bqNKT_YXh9ON",
         "isFallback": false,
         "gip": true
       }
@@ -65,7 +65,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       async=""
     ></script>
     <script
@@ -77,11 +77,11 @@
       async=""
     ></script>
     <script
-      src="/_next/static/51ENqzeG_ld23MHGjh6-z/_buildManifest.js"
+      src="/_next/static/CtBNshUp_bqNKT_YXh9ON/_buildManifest.js"
       async=""
     ></script>
     <script
-      src="/_next/static/51ENqzeG_ld23MHGjh6-z/_ssgManifest.js"
+      src="/_next/static/CtBNshUp_bqNKT_YXh9ON/_ssgManifest.js"
       async=""
     ></script>
   </body>
Diff for link.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       as="script"
     />
     <link
@@ -48,7 +48,7 @@
         "props": { "pageProps": {} },
         "page": "/link",
         "query": {},
-        "buildId": "51ENqzeG_ld23MHGjh6-z",
+        "buildId": "CtBNshUp_bqNKT_YXh9ON",
         "isFallback": false,
         "gip": true
       }
@@ -70,7 +70,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       async=""
     ></script>
     <script
@@ -82,11 +82,11 @@
       async=""
     ></script>
     <script
-      src="/_next/static/51ENqzeG_ld23MHGjh6-z/_buildManifest.js"
+      src="/_next/static/CtBNshUp_bqNKT_YXh9ON/_buildManifest.js"
       async=""
     ></script>
     <script
-      src="/_next/static/51ENqzeG_ld23MHGjh6-z/_ssgManifest.js"
+      src="/_next/static/CtBNshUp_bqNKT_YXh9ON/_ssgManifest.js"
       async=""
     ></script>
   </body>
Diff for withRouter.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       as="script"
     />
     <link
@@ -43,7 +43,7 @@
         "props": { "pageProps": {} },
         "page": "/withRouter",
         "query": {},
-        "buildId": "51ENqzeG_ld23MHGjh6-z",
+        "buildId": "CtBNshUp_bqNKT_YXh9ON",
         "isFallback": false,
         "gip": true
       }
@@ -65,7 +65,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       async=""
     ></script>
     <script
@@ -77,11 +77,11 @@
       async=""
     ></script>
     <script
-      src="/_next/static/51ENqzeG_ld23MHGjh6-z/_buildManifest.js"
+      src="/_next/static/CtBNshUp_bqNKT_YXh9ON/_buildManifest.js"
       async=""
     ></script>
     <script
-      src="/_next/static/51ENqzeG_ld23MHGjh6-z/_ssgManifest.js"
+      src="/_next/static/CtBNshUp_bqNKT_YXh9ON/_ssgManifest.js"
       async=""
     ></script>
   </body>
Commit: 633ec12

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@ijjk
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ijjk commented Jan 22, 2021

Stats from current PR

Default Server Mode (Increase detected ⚠️)
General Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
buildDuration 9s 8.9s -37ms
nodeModulesSize 73.3 MB 73.3 MB ⚠️ +451 B
Page Load Tests Overall increase ✓
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
/ failed reqs 0 0
/ total time (seconds) 1.748 1.767 ⚠️ +0.02
/ avg req/sec 1430.11 1414.83 ⚠️ -15.28
/error-in-render failed reqs 0 0
/error-in-render total time (seconds) 1.104 1.092 -0.01
/error-in-render avg req/sec 2263.5 2288.83 +25.33
Client Bundles (main, webpack, commons) Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
677f882d2ed8..bb74.js gzip 13.1 kB 13.1 kB ⚠️ +14 B
framework.HASH.js gzip 39 kB 39 kB
main-HASH.js gzip 6.63 kB 6.63 kB
webpack-HASH.js gzip 751 B 751 B
Overall change 59.4 kB 59.4 kB ⚠️ +14 B
Legacy Client Bundles (polyfills)
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
polyfills-HASH.js gzip 31.3 kB 31.3 kB
Overall change 31.3 kB 31.3 kB
Client Pages
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_app-2a09aa2..4a98.js gzip 1.28 kB 1.28 kB
_error-8b758..aef6.js gzip 3.46 kB 3.46 kB
hooks-c71ae4..70cd.js gzip 887 B 887 B
index-bbee2f..528b.js gzip 227 B 227 B
link-7faf09b..eba4.js gzip 1.64 kB 1.64 kB
routerDirect..bf84.js gzip 303 B 303 B
withRouter-a..5826.js gzip 302 B 302 B
Overall change 8.09 kB 8.09 kB
Client Build Manifests
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_buildManifest.js gzip 321 B 321 B
Overall change 321 B 321 B
Rendered Page Sizes Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
index.html gzip 613 B 614 B ⚠️ +1 B
link.html gzip 620 B 620 B
withRouter.html gzip 608 B 608 B
Overall change 1.84 kB 1.84 kB ⚠️ +1 B

Diffs

Diff for 677f882d2ed8..ac9dfbed6.js
@@ -1860,7 +1860,8 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                     newUrl,
                     newAs,
                     notFoundRoute,
-                    appComp;
+                    appComp,
+                    isValidShallowRoute;
 
                   return _regeneratorRuntime.wrap(
                     function _callee$(_context) {
@@ -2324,9 +2325,11 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                             this.changeState(method, url, as, options);
 
                             if (false) {
-                            }
+                            } // shallow routing is only allowed for same page URL changes.
 
-                            _context.next = 113;
+                            isValidShallowRoute =
+                              options.shallow && this.route === route;
+                            _context.next = 114;
                             return this.set(
                               route,
                               pathname,
@@ -2334,20 +2337,20 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                               cleanedAs,
                               routeInfo,
                               forcedScroll ||
-                                (options.scroll
-                                  ? {
+                                (isValidShallowRoute || !options.scroll
+                                  ? null
+                                  : {
                                       x: 0,
                                       y: 0
-                                    }
-                                  : null)
+                                    })
                             )["catch"](function(e) {
                               if (e.cancelled) error = error || e;
                               else throw e;
                             });
 
-                          case 113:
+                          case 114:
                             if (!error) {
-                              _context.next = 116;
+                              _context.next = 117;
                               break;
                             }
 
@@ -2359,7 +2362,7 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                             );
                             throw error;
 
-                          case 116:
+                          case 117:
                             if (false) {
                             }
 
@@ -2370,21 +2373,21 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                             );
                             return _context.abrupt("return", true);
 
-                          case 121:
-                            _context.prev = 121;
+                          case 122:
+                            _context.prev = 122;
                             _context.t2 = _context["catch"](79);
 
                             if (!_context.t2.cancelled) {
-                              _context.next = 125;
+                              _context.next = 126;
                               break;
                             }
 
                             return _context.abrupt("return", false);
 
-                          case 125:
+                          case 126:
                             throw _context.t2;
 
-                          case 126:
+                          case 127:
                           case "end":
                             return _context.stop();
                         }
@@ -2394,7 +2397,7 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
                     this,
                     [
                       [36, 46],
-                      [79, 121],
+                      [79, 122],
                       [96, 102]
                     ]
                   );
Diff for index.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       as="script"
     />
     <link
@@ -65,7 +65,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       async=""
     ></script>
     <script
Diff for link.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       as="script"
     />
     <link
@@ -70,7 +70,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       async=""
     ></script>
     <script
Diff for withRouter.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       as="script"
     />
     <link
@@ -65,7 +65,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.8750478fa37ac9dfbed6.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.d59cca9b248dde534236.js"
       async=""
     ></script>
     <script

Serverless Mode (Increase detected ⚠️)
General Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
buildDuration 10.7s 10.7s ⚠️ +2ms
nodeModulesSize 73.3 MB 73.3 MB ⚠️ +451 B
Client Bundles (main, webpack, commons) Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
677f882d2ed8..bb74.js gzip 13.1 kB N/A N/A
framework.HASH.js gzip 39 kB 39 kB
main-HASH.js gzip 6.63 kB 6.63 kB
webpack-HASH.js gzip 751 B 751 B
677f882d2ed8..38ed.js gzip N/A 13.1 kB N/A
Overall change 59.4 kB 59.4 kB ⚠️ +14 B
Legacy Client Bundles (polyfills)
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
polyfills-HASH.js gzip 31.3 kB 31.3 kB
Overall change 31.3 kB 31.3 kB
Client Pages
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_app-2a09aa2..4a98.js gzip 1.28 kB 1.28 kB
_error-8b758..aef6.js gzip 3.46 kB 3.46 kB
hooks-c71ae4..70cd.js gzip 887 B 887 B
index-bbee2f..528b.js gzip 227 B 227 B
link-7faf09b..eba4.js gzip 1.64 kB 1.64 kB
routerDirect..bf84.js gzip 303 B 303 B
withRouter-a..5826.js gzip 302 B 302 B
Overall change 8.09 kB 8.09 kB
Client Build Manifests
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_buildManifest.js gzip 321 B 321 B
Overall change 321 B 321 B
Serverless bundles Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_error.js 1 MB 1 MB
404.html 2.67 kB 2.67 kB
hooks.html 1.92 kB 1.92 kB
index.js 1 MB 1 MB
link.js 1.06 MB 1.06 MB ⚠️ +162 B
routerDirect.js 1.05 MB 1.05 MB ⚠️ +162 B
withRouter.js 1.05 MB 1.05 MB ⚠️ +162 B
Overall change 5.19 MB 5.19 MB ⚠️ +486 B

Webpack 5 Mode (Increase detected ⚠️)
General Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
buildDuration 10.8s 10.7s -78ms
nodeModulesSize 73.3 MB 73.3 MB ⚠️ +451 B
Page Load Tests Overall increase ✓
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
/ failed reqs 0 0
/ total time (seconds) 1.771 1.797 ⚠️ +0.03
/ avg req/sec 1411.82 1390.92 ⚠️ -20.9
/error-in-render failed reqs 0 0
/error-in-render total time (seconds) 1.142 1.084 -0.06
/error-in-render avg req/sec 2189.16 2305.99 +116.83
Client Bundles (main, webpack, commons) Overall increase ⚠️
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
597-168f5a87..2380.js gzip 13 kB 13 kB ⚠️ +13 B
framework.HASH.js gzip 39.3 kB 39.3 kB
main-HASH.js gzip 6.58 kB 6.58 kB
webpack-HASH.js gzip 954 B 954 B
Overall change 59.8 kB 59.8 kB ⚠️ +13 B
Legacy Client Bundles (polyfills)
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
polyfills-HASH.js gzip 31.1 kB 31.1 kB
Overall change 31.1 kB 31.1 kB
Client Pages
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_app-a5b2e84..33cf.js gzip 1.26 kB 1.26 kB
_error-6f1f9..5577.js gzip 3.38 kB 3.38 kB
hooks-725de8..0a15.js gzip 904 B 904 B
index-939503..6e1c.js gzip 232 B 232 B
link-e0cc871..fdbb.js gzip 1.63 kB 1.63 kB
routerDirect..9360.js gzip 308 B 308 B
withRouter-6..44ec.js gzip 304 B 304 B
Overall change 8.02 kB 8.02 kB
Client Build Manifests
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
_buildManifest.js gzip 299 B 299 B
Overall change 299 B 299 B
Rendered Page Sizes Overall decrease ✓
vercel/next.js canary kaykdm/next.js fix/shallow-routing-scroll Change
index.html gzip 588 B 588 B
link.html gzip 593 B 593 B
withRouter.html gzip 583 B 581 B -2 B
Overall change 1.76 kB 1.76 kB -2 B

Diffs

Diff for 677f882d2ed8..d6246bb74.js
@@ -1066,7 +1066,8 @@
                       K,
                       tt,
                       et,
-                      rt;
+                      rt,
+                      nt;
                     return n.wrap(
                       function(e) {
                         for (;;)
@@ -1312,44 +1313,45 @@
                               return (
                                 t.events.emit("beforeHistoryChange", a, g),
                                 this.changeState(r, o, a, i),
-                                (e.next = 113),
+                                (nt = i.shallow && this.route === D),
+                                (e.next = 114),
                                 this.set(
                                   D,
                                   C,
                                   I,
                                   w,
                                   V,
-                                  u || (i.scroll ? { x: 0, y: 0 } : null)
+                                  u || (nt || !i.scroll ? null : { x: 0, y: 0 })
                                 ).catch(function(t) {
                                   if (!t.cancelled) throw t;
                                   z = z || t;
                                 })
                               );
-                            case 113:
+                            case 114:
                               if (!z) {
-                                e.next = 116;
+                                e.next = 117;
                                 break;
                               }
                               throw (t.events.emit("routeChangeError", z, w, g),
                               z);
-                            case 116:
+                            case 117:
                               return (
                                 t.events.emit("routeChangeComplete", a, g),
                                 e.abrupt("return", !0)
                               );
-                            case 121:
+                            case 122:
                               if (
-                                ((e.prev = 121),
+                                ((e.prev = 122),
                                 (e.t2 = e.catch(79)),
                                 !e.t2.cancelled)
                               ) {
-                                e.next = 125;
+                                e.next = 126;
                                 break;
                               }
                               return e.abrupt("return", !1);
-                            case 125:
-                              throw e.t2;
                             case 126:
+                              throw e.t2;
+                            case 127:
                             case "end":
                               return e.stop();
                           }
@@ -1358,7 +1360,7 @@
                       this,
                       [
                         [36, 46],
-                        [79, 121],
+                        [79, 122],
                         [96, 102]
                       ]
                     );
Diff for index.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       as="script"
     />
     <link
@@ -43,7 +43,7 @@
         "props": { "pageProps": {} },
         "page": "/",
         "query": {},
-        "buildId": "XdTPl6kxwTfZdjEZvxcKl",
+        "buildId": "Mka8AtlXjf6KboPyF_uUB",
         "isFallback": false,
         "gip": true
       }
@@ -65,7 +65,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       async=""
     ></script>
     <script
@@ -77,11 +77,11 @@
       async=""
     ></script>
     <script
-      src="/_next/static/XdTPl6kxwTfZdjEZvxcKl/_buildManifest.js"
+      src="/_next/static/Mka8AtlXjf6KboPyF_uUB/_buildManifest.js"
       async=""
     ></script>
     <script
-      src="/_next/static/XdTPl6kxwTfZdjEZvxcKl/_ssgManifest.js"
+      src="/_next/static/Mka8AtlXjf6KboPyF_uUB/_ssgManifest.js"
       async=""
     ></script>
   </body>
Diff for link.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       as="script"
     />
     <link
@@ -48,7 +48,7 @@
         "props": { "pageProps": {} },
         "page": "/link",
         "query": {},
-        "buildId": "XdTPl6kxwTfZdjEZvxcKl",
+        "buildId": "Mka8AtlXjf6KboPyF_uUB",
         "isFallback": false,
         "gip": true
       }
@@ -70,7 +70,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       async=""
     ></script>
     <script
@@ -82,11 +82,11 @@
       async=""
     ></script>
     <script
-      src="/_next/static/XdTPl6kxwTfZdjEZvxcKl/_buildManifest.js"
+      src="/_next/static/Mka8AtlXjf6KboPyF_uUB/_buildManifest.js"
       async=""
     ></script>
     <script
-      src="/_next/static/XdTPl6kxwTfZdjEZvxcKl/_ssgManifest.js"
+      src="/_next/static/Mka8AtlXjf6KboPyF_uUB/_ssgManifest.js"
       async=""
     ></script>
   </body>
Diff for withRouter.html
@@ -22,7 +22,7 @@
     />
     <link
       rel="preload"
-      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      href="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       as="script"
     />
     <link
@@ -43,7 +43,7 @@
         "props": { "pageProps": {} },
         "page": "/withRouter",
         "query": {},
-        "buildId": "XdTPl6kxwTfZdjEZvxcKl",
+        "buildId": "Mka8AtlXjf6KboPyF_uUB",
         "isFallback": false,
         "gip": true
       }
@@ -65,7 +65,7 @@
       async=""
     ></script>
     <script
-      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.203a9b065a4d6246bb74.js"
+      src="/_next/static/chunks/677f882d2ed86fa3467b8979053c1a4c3f8bc4df.c28076628b4c23f838ed.js"
       async=""
     ></script>
     <script
@@ -77,11 +77,11 @@
       async=""
     ></script>
     <script
-      src="/_next/static/XdTPl6kxwTfZdjEZvxcKl/_buildManifest.js"
+      src="/_next/static/Mka8AtlXjf6KboPyF_uUB/_buildManifest.js"
       async=""
     ></script>
     <script
-      src="/_next/static/XdTPl6kxwTfZdjEZvxcKl/_ssgManifest.js"
+      src="/_next/static/Mka8AtlXjf6KboPyF_uUB/_ssgManifest.js"
       async=""
     ></script>
   </body>
Commit: 50d28b2

@kodiakhq kodiakhq bot merged commit a5b0094 into vercel:canary Jan 22, 2021
27 of 29 checks passed
@kaykdm kaykdm deleted the fix/shallow-routing-scroll branch Jan 23, 2021
@luismramirezr
Copy link

luismramirezr commented Mar 29, 2021

This PR disabled totally the option to scroll to the top on shallow rendering. There is an option (scroll: false) that prevents scrolling. Scroll to the top on shallow routing is sometimes useful: #21606

@chinanderm
Copy link

chinanderm commented Mar 31, 2021

May I ask why this change made specifically for shallow routing? As @luismramirezr mentioned, there is an option to explicitly disable the scroll. Why is that ignored for shallow routing? If this change remains, I would like to suggest that, at minimum, an explicit scroll: true option should allow the scroll to happen.

@vercel vercel locked as resolved and limited conversation to collaborators Jan 28, 2022
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