[Fiber] Use a safer strategy to track the last precedence (#28110)

Uses a safer strategy to track the last precedence to avoid the need to
consistently remember to preprend `'p'` to the precedence value

DiffTrain build for [1c958aa](1c958aa)

Author: gnoff

compiled/facebook-www/REVISION

@@ -1 +1 @@
-766eac46bb52bda28f87c11740214a4444ca881b
+1c958aa4abf9e6b638489b1d73cdb1b6dc7c3ab6

compiled/facebook-www/React-dev.classic.js

@@ -24,7 +24,7 @@ if (__DEV__) {
     ) {
       __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error());
     }
-    var ReactVersion = "18.3.0-www-classic-482168c3";
+    var ReactVersion = "18.3.0-www-classic-2277e96d";
 
     // ATTENTION
     // When adding new symbols to this file,

compiled/facebook-www/ReactART-dev.modern.js

@@ -66,7 +66,7 @@ if (__DEV__) {
       return self;
     }
 
-    var ReactVersion = "18.3.0-www-modern-2cff546f";
+    var ReactVersion = "18.3.0-www-modern-416a65ea";
 
     var LegacyRoot = 0;
     var ConcurrentRoot = 1;

compiled/facebook-www/ReactDOM-dev.classic.js

@@ -35039,7 +35039,7 @@ if (__DEV__) {
       return root;
     }
 
-    var ReactVersion = "18.3.0-www-classic-8a83edec";
+    var ReactVersion = "18.3.0-www-classic-dedd8149";
 
     function createPortal$1(
       children,
@@ -45535,7 +45535,13 @@ if (__DEV__) {
           unsuspend();
         }
       }
-    } // This is typecast to non-null because it will always be set before read.
+    } // We use a value that is type distinct from precedence to track which one is last.
+    // This ensures there is no collision with user defined precedences. Normally we would
+    // just track this in module scope but since the precedences are tracked per HoistableRoot
+    // we need to associate it to something other than a global scope hence why we try to
+    // colocate it with the map of precedences in the first place
+
+    var LAST_PRECEDENCE = null; // This is typecast to non-null because it will always be set before read.
     // it is important that this not be used except when the stack guarantees it exists.
     // Currentlyt his is only during insertSuspendedStylesheet.
 
@@ -45585,28 +45591,28 @@ if (__DEV__) {
             // and will be hoisted by the Fizz runtime imminently.
             node.getAttribute("media") !== "not all"
           ) {
-            precedences.set("p" + node.dataset.precedence, node);
+            precedences.set(node.dataset.precedence, node);
             last = node;
           }
         }
 
         if (last) {
-          precedences.set("last", last);
+          precedences.set(LAST_PRECEDENCE, last);
         }
       } else {
-        last = precedences.get("last");
+        last = precedences.get(LAST_PRECEDENCE);
       } // We only call this after we have constructed an instance so we assume it here
 
       var instance = resource.instance; // We will always have a precedence for stylesheet instances
 
       var precedence = instance.getAttribute("data-precedence");
-      var prior = precedences.get("p" + precedence) || last;
+      var prior = precedences.get(precedence) || last;
 
       if (prior === last) {
-        precedences.set("last", instance);
+        precedences.set(LAST_PRECEDENCE, instance);
       }
 
-      precedences.set("p" + precedence, instance);
+      precedences.set(precedence, instance);
       this.count++;
       var onComplete = onUnsuspend.bind(this);
       instance.addEventListener("load", onComplete);

compiled/facebook-www/ReactDOM-dev.modern.js

@@ -34860,7 +34860,7 @@ if (__DEV__) {
       return root;
     }
 
-    var ReactVersion = "18.3.0-www-modern-30f1d245";
+    var ReactVersion = "18.3.0-www-modern-57106b67";
 
     function createPortal$1(
       children,
@@ -46021,7 +46021,13 @@ if (__DEV__) {
           unsuspend();
         }
       }
-    } // This is typecast to non-null because it will always be set before read.
+    } // We use a value that is type distinct from precedence to track which one is last.
+    // This ensures there is no collision with user defined precedences. Normally we would
+    // just track this in module scope but since the precedences are tracked per HoistableRoot
+    // we need to associate it to something other than a global scope hence why we try to
+    // colocate it with the map of precedences in the first place
+
+    var LAST_PRECEDENCE = null; // This is typecast to non-null because it will always be set before read.
     // it is important that this not be used except when the stack guarantees it exists.
     // Currentlyt his is only during insertSuspendedStylesheet.
 
@@ -46071,28 +46077,28 @@ if (__DEV__) {
             // and will be hoisted by the Fizz runtime imminently.
             node.getAttribute("media") !== "not all"
           ) {
-            precedences.set("p" + node.dataset.precedence, node);
+            precedences.set(node.dataset.precedence, node);
             last = node;
           }
         }
 
         if (last) {
-          precedences.set("last", last);
+          precedences.set(LAST_PRECEDENCE, last);
         }
       } else {
-        last = precedences.get("last");
+        last = precedences.get(LAST_PRECEDENCE);
       } // We only call this after we have constructed an instance so we assume it here
 
       var instance = resource.instance; // We will always have a precedence for stylesheet instances
 
       var precedence = instance.getAttribute("data-precedence");
-      var prior = precedences.get("p" + precedence) || last;
+      var prior = precedences.get(precedence) || last;
 
       if (prior === last) {
-        precedences.set("last", instance);
+        precedences.set(LAST_PRECEDENCE, instance);
       }
 
-      precedences.set("p" + precedence, instance);
+      precedences.set(precedence, instance);
       this.count++;
       var onComplete = onUnsuspend.bind(this);
       instance.addEventListener("load", onComplete);

compiled/facebook-www/ReactDOM-prod.classic.js

@@ -15801,7 +15801,7 @@ function insertSuspendedStylesheets(state, resources) {
 function insertStylesheetIntoRoot(root, resource) {
   if (!(resource.state.loading & 4)) {
     var precedences = precedencesByRoot.get(root);
-    if (precedences) var last = precedences.get("last");
+    if (precedences) var last = precedences.get(null);
     else {
       precedences = new Map();
       precedencesByRoot.set(root, precedences);
@@ -15818,15 +15818,15 @@ function insertStylesheetIntoRoot(root, resource) {
           "link" === node.nodeName ||
           "not all" !== node.getAttribute("media")
         )
-          precedences.set("p" + node.dataset.precedence, node), (last = node);
+          precedences.set(node.dataset.precedence, node), (last = node);
       }
-      last && precedences.set("last", last);
+      last && precedences.set(null, last);
     }
     nodes = resource.instance;
     node = nodes.getAttribute("data-precedence");
-    i = precedences.get("p" + node) || last;
-    i === last && precedences.set("last", nodes);
-    precedences.set("p" + node, nodes);
+    i = precedences.get(node) || last;
+    i === last && precedences.set(null, nodes);
+    precedences.set(node, nodes);
     this.count++;
     last = onUnsuspend.bind(this);
     nodes.addEventListener("load", last);
@@ -16637,7 +16637,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1801 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-classic-092a346f",
+  version: "18.3.0-www-classic-aa2ac027",
   rendererPackageName: "react-dom"
 };
 var internals$jscomp$inline_2147 = {
@@ -16667,7 +16667,7 @@ var internals$jscomp$inline_2147 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-classic-092a346f"
+  reconcilerVersion: "18.3.0-www-classic-aa2ac027"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_2148 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
@@ -17004,4 +17004,4 @@ exports.useFormState = function () {
 exports.useFormStatus = function () {
   throw Error(formatProdErrorMessage(248));
 };
-exports.version = "18.3.0-www-classic-092a346f";
+exports.version = "18.3.0-www-classic-aa2ac027";

compiled/facebook-www/ReactDOM-prod.modern.js

@@ -16027,7 +16027,7 @@ function insertSuspendedStylesheets(state, resources) {
 function insertStylesheetIntoRoot(root, resource) {
   if (!(resource.state.loading & 4)) {
     var precedences = precedencesByRoot.get(root);
-    if (precedences) var last = precedences.get("last");
+    if (precedences) var last = precedences.get(null);
     else {
       precedences = new Map();
       precedencesByRoot.set(root, precedences);
@@ -16044,15 +16044,15 @@ function insertStylesheetIntoRoot(root, resource) {
           "link" === node.nodeName ||
           "not all" !== node.getAttribute("media")
         )
-          precedences.set("p" + node.dataset.precedence, node), (last = node);
+          precedences.set(node.dataset.precedence, node), (last = node);
       }
-      last && precedences.set("last", last);
+      last && precedences.set(null, last);
     }
     nodes = resource.instance;
     node = nodes.getAttribute("data-precedence");
-    i = precedences.get("p" + node) || last;
-    i === last && precedences.set("last", nodes);
-    precedences.set("p" + node, nodes);
+    i = precedences.get(node) || last;
+    i === last && precedences.set(null, nodes);
+    precedences.set(node, nodes);
     this.count++;
     last = onUnsuspend.bind(this);
     nodes.addEventListener("load", last);
@@ -16160,7 +16160,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1760 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-modern-492c5262",
+  version: "18.3.0-www-modern-571f606f",
   rendererPackageName: "react-dom"
 };
 var internals$jscomp$inline_2111 = {
@@ -16191,7 +16191,7 @@ var internals$jscomp$inline_2111 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-modern-492c5262"
+  reconcilerVersion: "18.3.0-www-modern-571f606f"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_2112 = __REACT_DEVTOOLS_GLOBAL_HOOK__;
@@ -16456,4 +16456,4 @@ exports.useFormState = function () {
 exports.useFormStatus = function () {
   throw Error(formatProdErrorMessage(248));
 };
-exports.version = "18.3.0-www-modern-492c5262";
+exports.version = "18.3.0-www-modern-571f606f";

compiled/facebook-www/ReactDOM-profiling.classic.js

@@ -16570,7 +16570,7 @@ function insertSuspendedStylesheets(state, resources) {
 function insertStylesheetIntoRoot(root, resource) {
   if (!(resource.state.loading & 4)) {
     var precedences = precedencesByRoot.get(root);
-    if (precedences) var last = precedences.get("last");
+    if (precedences) var last = precedences.get(null);
     else {
       precedences = new Map();
       precedencesByRoot.set(root, precedences);
@@ -16587,15 +16587,15 @@ function insertStylesheetIntoRoot(root, resource) {
           "link" === node.nodeName ||
           "not all" !== node.getAttribute("media")
         )
-          precedences.set("p" + node.dataset.precedence, node), (last = node);
+          precedences.set(node.dataset.precedence, node), (last = node);
       }
-      last && precedences.set("last", last);
+      last && precedences.set(null, last);
     }
     nodes = resource.instance;
     node = nodes.getAttribute("data-precedence");
-    i = precedences.get("p" + node) || last;
-    i === last && precedences.set("last", nodes);
-    precedences.set("p" + node, nodes);
+    i = precedences.get(node) || last;
+    i === last && precedences.set(null, nodes);
+    precedences.set(node, nodes);
     this.count++;
     last = onUnsuspend.bind(this);
     nodes.addEventListener("load", last);
@@ -17406,7 +17406,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1886 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-classic-54ebd8ef",
+  version: "18.3.0-www-classic-071ab715",
   rendererPackageName: "react-dom"
 };
 (function (internals) {
@@ -17450,7 +17450,7 @@ var devToolsConfig$jscomp$inline_1886 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-classic-54ebd8ef"
+  reconcilerVersion: "18.3.0-www-classic-071ab715"
 });
 assign(Internals, {
   ReactBrowserEventEmitter: {
@@ -17774,7 +17774,7 @@ exports.useFormState = function () {
 exports.useFormStatus = function () {
   throw Error(formatProdErrorMessage(248));
 };
-exports.version = "18.3.0-www-classic-54ebd8ef";
+exports.version = "18.3.0-www-classic-071ab715";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&

compiled/facebook-www/ReactDOM-profiling.modern.js

@@ -16790,7 +16790,7 @@ function insertSuspendedStylesheets(state, resources) {
 function insertStylesheetIntoRoot(root, resource) {
   if (!(resource.state.loading & 4)) {
     var precedences = precedencesByRoot.get(root);
-    if (precedences) var last = precedences.get("last");
+    if (precedences) var last = precedences.get(null);
     else {
       precedences = new Map();
       precedencesByRoot.set(root, precedences);
@@ -16807,15 +16807,15 @@ function insertStylesheetIntoRoot(root, resource) {
           "link" === node.nodeName ||
           "not all" !== node.getAttribute("media")
         )
-          precedences.set("p" + node.dataset.precedence, node), (last = node);
+          precedences.set(node.dataset.precedence, node), (last = node);
       }
-      last && precedences.set("last", last);
+      last && precedences.set(null, last);
     }
     nodes = resource.instance;
     node = nodes.getAttribute("data-precedence");
-    i = precedences.get("p" + node) || last;
-    i === last && precedences.set("last", nodes);
-    precedences.set("p" + node, nodes);
+    i = precedences.get(node) || last;
+    i === last && precedences.set(null, nodes);
+    precedences.set(node, nodes);
     this.count++;
     last = onUnsuspend.bind(this);
     nodes.addEventListener("load", last);
@@ -16923,7 +16923,7 @@ Internals.Events = [
 var devToolsConfig$jscomp$inline_1845 = {
   findFiberByHostInstance: getClosestInstanceFromNode,
   bundleType: 0,
-  version: "18.3.0-www-modern-2cff546f",
+  version: "18.3.0-www-modern-416a65ea",
   rendererPackageName: "react-dom"
 };
 (function (internals) {
@@ -16968,7 +16968,7 @@ var devToolsConfig$jscomp$inline_1845 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-www-modern-2cff546f"
+  reconcilerVersion: "18.3.0-www-modern-416a65ea"
 });
 exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = Internals;
 exports.createPortal = function (children, container) {
@@ -17220,7 +17220,7 @@ exports.useFormState = function () {
 exports.useFormStatus = function () {
   throw Error(formatProdErrorMessage(248));
 };
-exports.version = "18.3.0-www-modern-2cff546f";
+exports.version = "18.3.0-www-modern-416a65ea";
 "undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
   "function" ===
     typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&