note to self

Rich-Harris · Rich-Harris · commit 11010578a7fa · 2025-10-14T09:36:56.000-04:00
diff --git a/packages/svelte/src/internal/client/reactivity/deriveds.js b/packages/svelte/src/internal/client/reactivity/deriveds.js
@@ -336,6 +336,8 @@ export function update_derived(derived) {
 	var value = execute_derived(derived);
 
 	if (!derived.equals(value)) {
+		// TODO can we avoid setting `derived.v` when `batch_values !== null`,
+		// without causing the value to be stale later?
 		derived.v = value;
 		derived.wv = increment_write_version();
 	}

Original file line number	Diff line number	Diff line change
`@@ -336,6 +336,8 @@ export function update_derived(derived) {`
`336`	`336`	`var value = execute_derived(derived);`
`337`	`337`
`338`	`338`	`if (!derived.equals(value)) {`
	`339`	+ // TODO can we avoid setting `derived.v` when `batch_values !== null`,
	`340`	`+ // without causing the value to be stale later?`
`339`	`341`	`derived.v = value;`
`340`	`342`	`derived.wv = increment_write_version();`
`341`	`343`	`}`