experimental-require-strict-events.md

pageClass	sidebarDepth	title	description	since
rule-details	0	svelte/experimental-require-strict-events	require the strictEvents attribute on `<script>` tags	v2.18.0

svelte/experimental-require-strict-events

require the strictEvents attribute on <script> tags

📖 Rule Details

This rule enforces the presence of the strictEvents attribute on the main <script> tag of all components. This attributes enforces typechecking of events dispatched by the component, e.g. making it a typescript error to listen to any non-existent events. Alternatively, the event types may be defined manually by declaring the $$Events interface. The strictEvents attribute and the $$Events interface are experimental and are documented in svelte RFC #38.

<!-- ✓ GOOD -->
<script lang="ts" strictEvents>
/* eslint svelte/experimental-require-strict-events: "error" */
</script>

<!-- ✓ GOOD -->
<script lang="ts">
  /* eslint svelte/experimental-require-strict-events: "error" */
  interface $$Events {}
</script>

<!-- ✗ BAD -->
<script lang="ts">
/* eslint svelte/experimental-require-strict-events: "error" */
</script>

🔧 Options

Nothing.

🚀 Version

This rule was introduced in eslint-plugin-svelte v2.18.0

🔍 Implementation

• Rule source
• Test source