diff --git a/.changeset/rare-cups-fold.md b/.changeset/rare-cups-fold.md new file mode 100644 index 0000000000..8cd5995651 --- /dev/null +++ b/.changeset/rare-cups-fold.md @@ -0,0 +1,5 @@ +--- +'svelte': patch +--- + +fix: Introduced Promise.resolve to ensure that the 'set' operation completes before the 'get' operation Minimizing update delays. diff --git a/.changeset/tasty-chicken-care.md b/.changeset/tasty-chicken-care.md new file mode 100644 index 0000000000..ea579efe4c --- /dev/null +++ b/.changeset/tasty-chicken-care.md @@ -0,0 +1,5 @@ +--- +'svelte': patch +--- + +fix: wait until changes propagate before updating input selection state diff --git a/packages/svelte/src/internal/client/dom/elements/bindings/input.js b/packages/svelte/src/internal/client/dom/elements/bindings/input.js index 67e6ff1dd2..815acde7c5 100644 --- a/packages/svelte/src/internal/client/dom/elements/bindings/input.js +++ b/packages/svelte/src/internal/client/dom/elements/bindings/input.js @@ -6,7 +6,7 @@ import * as e from '../../../errors.js'; import { is } from '../../../proxy.js'; import { queue_micro_task } from '../../task.js'; import { hydrating } from '../../hydration.js'; -import { untrack } from '../../../runtime.js'; +import { tick, untrack } from '../../../runtime.js'; import { is_runes } from '../../../context.js'; import { current_batch, previous_batch } from '../../../reactivity/batch.js'; @@ -17,11 +17,9 @@ import { current_batch, previous_batch } from '../../../reactivity/batch.js'; * @returns {void} */ export function bind_value(input, get, set = get) { - var runes = is_runes(); - var batches = new WeakSet(); - listen_to_event_and_reset_event(input, 'input', (is_reset) => { + listen_to_event_and_reset_event(input, 'input', async (is_reset) => { if (DEV && input.type === 'checkbox') { // TODO should this happen in prod too? e.bind_invalid_checkbox_value(); @@ -36,9 +34,13 @@ export function bind_value(input, get, set = get) { batches.add(current_batch); } - // In runes mode, respect any validation in accessors (doesn't apply in legacy mode, - // because we use mutable state which ensures the render effect always runs) - if (runes && value !== (value = get())) { + // Because `{#each ...}` blocks work by updating sources inside the flush, + // we need to wait a tick before checking to see if we should forcibly + // update the input and reset the selection state + await tick(); + + // Respect any validation in accessors + if (value !== (value = get())) { var start = input.selectionStart; var end = input.selectionEnd; diff --git a/packages/svelte/tests/runtime-runes/samples/binding-update-in-each/_config.js b/packages/svelte/tests/runtime-runes/samples/binding-update-in-each/_config.js new file mode 100644 index 0000000000..b6371ce11c --- /dev/null +++ b/packages/svelte/tests/runtime-runes/samples/binding-update-in-each/_config.js @@ -0,0 +1,28 @@ +import { flushSync } from 'svelte'; +import { test } from '../../test'; + +export default test({ + mode: ['client', 'hydrate'], + + html: `
a`, + + async test({ assert, target }) { + const [input] = target.querySelectorAll('input'); + + input.focus(); + input.value = 'ab'; + input.dispatchEvent(new InputEvent('input', { bubbles: true })); + flushSync(); + + assert.htmlEqual(target.innerHTML, `
ab`); + assert.equal(input.value, 'ab'); + + input.focus(); + input.value = 'abc'; + input.dispatchEvent(new InputEvent('input', { bubbles: true })); + flushSync(); + + assert.htmlEqual(target.innerHTML, `
abc`); + assert.equal(input.value, 'abc'); + } +}); diff --git a/packages/svelte/tests/runtime-runes/samples/binding-update-in-each/main.svelte b/packages/svelte/tests/runtime-runes/samples/binding-update-in-each/main.svelte new file mode 100644 index 0000000000..7925195ee1 --- /dev/null +++ b/packages/svelte/tests/runtime-runes/samples/binding-update-in-each/main.svelte @@ -0,0 +1,8 @@ + + +{#each array as obj} + obj.value, (value) => array = [{ value }]} /> +
{obj.value}
+{/each} diff --git a/packages/svelte/tests/runtime-runes/samples/binding-update-while-focused-3/_config.js b/packages/svelte/tests/runtime-runes/samples/binding-update-while-focused-3/_config.js new file mode 100644 index 0000000000..0909dee7a8 --- /dev/null +++ b/packages/svelte/tests/runtime-runes/samples/binding-update-while-focused-3/_config.js @@ -0,0 +1,30 @@ +import { tick } from 'svelte'; +import { test } from '../../test'; + +export default test({ + mode: ['client', 'hydrate'], + + async test({ assert, target }) { + const [input] = target.querySelectorAll('input'); + + input.focus(); + input.value = 'Ab'; + input.dispatchEvent(new InputEvent('input', { bubbles: true })); + + await tick(); + await tick(); + + assert.equal(input.value, 'AB'); + assert.htmlEqual(target.innerHTML, `AB
`); + + input.focus(); + input.value = 'ABc'; + input.dispatchEvent(new InputEvent('input', { bubbles: true })); + + await tick(); + await tick(); + + assert.equal(input.value, 'ABC'); + assert.htmlEqual(target.innerHTML, `ABC
`); + } +}); diff --git a/packages/svelte/tests/runtime-runes/samples/binding-update-while-focused-3/main.svelte b/packages/svelte/tests/runtime-runes/samples/binding-update-while-focused-3/main.svelte new file mode 100644 index 0000000000..b61bfe4e67 --- /dev/null +++ b/packages/svelte/tests/runtime-runes/samples/binding-update-while-focused-3/main.svelte @@ -0,0 +1,6 @@ + + + text, (v) => text = v.toUpperCase()} /> +{text}