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chore: tweak migration doc diff blocks #15527

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merged 1 commit into from
Mar 16, 2025
+12 −11
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chore: tweak migration doc diff blocks #15527

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23 changes: 12 additions & 11 deletions documentation/docs/07-misc/07-v5-migration-guide.md
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ In Svelte 4, a `let` declaration at the top level of a component was implicitly

```svelte
<script>
let count = +++$state(+++0+++)+++;
let count = +++$state(0)+++;
</script>
```

Expand All @@ -31,8 +31,8 @@ In Svelte 4, a `$:` statement at the top level of a component could be used to d

```svelte
<script>
let count = +++$state(+++0+++)+++;
---$:--- +++const+++ double = +++$derived(+++count * 2+++)+++;
let count = $state(0);
---$:--- +++const+++ double = +++$derived(count * 2)+++;
</script>
```

Expand All @@ -42,7 +42,8 @@ A `$:` statement could also be used to create side effects. In Svelte 5, this is

```svelte
<script>
let count = +++$state(+++0+++)+++;
let count = $state(0);
---$:---+++$effect(() =>+++ {
if (count > 5) {
alert('Count is too high!');
Expand Down Expand Up @@ -79,8 +80,8 @@ In Svelte 4, properties of a component were declared using `export let`. Each pr

```svelte
<script>
---export let optional = 'unset';
export let required;---
---export let optional = 'unset';---
---export let required;---
+++let { optional = 'unset', required } = $props();+++
</script>
```
Expand All @@ -105,8 +106,8 @@ In Svelte 5, the `$props` rune makes this straightforward without any additional

```svelte
<script>
---let klass = '';
export { klass as class};---
---let klass = '';---
---export { klass as class};---
+++let { class: klass, ...rest } = $props();+++
</script>
<button class={klass} {...---$$restProps---+++rest+++}>click me</button>
Expand Down Expand Up @@ -192,9 +193,9 @@ This function is deprecated in Svelte 5. Instead, components should accept _call
```svelte
<!--- file: Pump.svelte --->
<script>
---import { createEventDispatcher } from 'svelte';
const dispatch = createEventDispatcher();
---
---import { createEventDispatcher } from 'svelte';---
---const dispatch = createEventDispatcher();---
+++let { inflate, deflate } = $props();+++
let power = $state(5);
</script>
Expand Down