feat: log a warning instead of throwing an error for server host mismatch error

Author: Varixo

.changeset/shaggy-poems-appear.md

@@ -0,0 +1,5 @@
+---
+'@qwik.dev/core': patch
+---
+
+feat: log a warning instead of throwing an error for server host mismatch error

packages/qwik/src/core/shared/error/error.ts

@@ -50,7 +50,6 @@ export const codeToText = (code: number, ...parts: any[]): string => {
       "Element must have 'q:container' attribute.", // 42
       'Unknown vnode type {{0}}.', // 43
       'Materialize error: missing element: {{0}} {{1}} {{2}}', // 44
-      'SsrError: {{0}}', // 45
       'Cannot coerce a Signal, use `.value` instead', // 46
       'useComputedSignal$ QRL {{0}} {{1}} returned a Promise', // 47
       'ComputedSignal is read-only', // 48
@@ -121,13 +120,12 @@ export const enum QError {
   elementWithoutContainer = 42,
   invalidVNodeType = 43,
   materializeVNodeDataError = 44,
-  serverHostMismatch = 45,
-  cannotCoerceSignal = 46,
-  computedNotSync = 47,
-  computedReadOnly = 48,
-  wrappedReadOnly = 49,
-  promisesNotExpected = 50,
-  unsafeAttr = 51,
+  cannotCoerceSignal = 45,
+  computedNotSync = 46,
+  computedReadOnly = 47,
+  wrappedReadOnly = 48,
+  promisesNotExpected = 49,
+  unsafeAttr = 50,
 }
 
 export const qError = (code: number, errorMessageArgs: any[] = []): Error => {

packages/qwik/src/core/shared/scheduler.ts

@@ -115,7 +115,6 @@ import { QScopedStyle } from './utils/markers';
 import { addComponentStylePrefix } from './utils/scoped-styles';
 import { type WrappedSignal, type ComputedSignal, triggerEffects } from '../signal/signal';
 import type { TargetType } from '../signal/store';
-import { QError, qError } from './error/error';
 
 // Turn this on to get debug output of what the scheduler is doing.
 const DEBUG: boolean = false;
@@ -294,7 +293,7 @@ export const createScheduler = (
     }
     while (choreQueue.length) {
       const nextChore = choreQueue.shift()!;
-      const order = choreComparator(nextChore, runUptoChore, rootVNode, false);
+      const order = choreComparator(nextChore, runUptoChore, rootVNode);
       if (order === null) {
         continue;
       }
@@ -462,28 +461,10 @@ function vNodeAlreadyDeleted(chore: Chore): boolean {
  *
  * @param a - The first chore to compare
  * @param b - The second chore to compare
- * @param shouldThrowOnHostMismatch - Controls error behavior for mismatched hosts
- * @returns A number indicating the relative order of the chores, or null if invalid. A negative
- *   number means `a` runs before `b`.
+ * @returns A number indicating the relative order of the chores. A negative number means `a` runs
+ *   before `b`.
  */
-function choreComparator(
-  a: Chore,
-  b: Chore,
-  rootVNode: ElementVNode | null,
-  shouldThrowOnHostMismatch: true
-): number;
-function choreComparator(
-  a: Chore,
-  b: Chore,
-  rootVNode: ElementVNode | null,
-  shouldThrowOnHostMismatch: false
-): number | null;
-function choreComparator(
-  a: Chore,
-  b: Chore,
-  rootVNode: ElementVNode | null,
-  shouldThrowOnHostMismatch: boolean
-): number | null {
+function choreComparator(a: Chore, b: Chore, rootVNode: ElementVNode | null): number {
   const macroTypeDiff = (a.$type$ & ChoreType.MACRO) - (b.$type$ & ChoreType.MACRO);
   if (macroTypeDiff !== 0) {
     return macroTypeDiff;
@@ -511,11 +492,8 @@ function choreComparator(
           You are attempting to change a state that has already been streamed to the client.
           This can lead to inconsistencies between Server-Side Rendering (SSR) and Client-Side Rendering (CSR).
           Problematic Node: ${aHost.toString()}`;
-        if (shouldThrowOnHostMismatch) {
-          throw qError(QError.serverHostMismatch, [errorMessage]);
-        }
         logWarn(errorMessage);
-        return null;
+        return 1;
       }
     }
 
@@ -557,7 +535,7 @@ function sortedFindIndex(
   while (bottom < top) {
     const middle = bottom + ((top - bottom) >> 1);
     const midChore = sortedArray[middle];
-    const comp = choreComparator(value, midChore, rootVNode, true);
+    const comp = choreComparator(value, midChore, rootVNode);
     if (comp < 0) {
       top = middle;
     } else if (comp > 0) {