fallthrough-attributes.md 1.7 KB
title: Enable Fallthrough Attributes Type Checking impact: MEDIUM impactDescription: enables IDE autocomplete for fallthrough attributes in wrapper components type: capability
tags: fallthroughAttributes, vueCompilerOptions, component-library, wrapper-components
Enable Fallthrough Attributes Type Checking
Impact: MEDIUM - enables type-aware attribute forwarding in component libraries
When building component libraries with wrapper components, enable fallthroughAttributes to get IDE autocomplete for attributes that will be forwarded to child elements.
What It Does
Wrapper components that pass attributes to child elements can benefit from type-aware completion:
<!-- MyButton.vue - wrapper around native button -->
<template>
<button v-bind="$attrs">
<slot />
</button>
</template>
Solution
Enable fallthroughAttributes in your tsconfig:
// tsconfig.json or tsconfig.app.json
{
"vueCompilerOptions": {
"fallthroughAttributes": true
}
}
How It Works
When fallthroughAttributes: true:
- Vue Language Server analyzes which element receives
$attrs - IDE autocomplete suggests valid attributes for the target element
- Helps developers discover available attributes
Note: This primarily enables IDE autocomplete for valid fallthrough attributes. It does NOT reject invalid attributes as type errors - arbitrary attributes are still allowed.
Related Options
Combine with strictTemplates for comprehensive checking:
{
"vueCompilerOptions": {
"strictTemplates": true,
"fallthroughAttributes": true
}
}