Forms
ErrorSummary
Summarizes form errors and links people back to invalid controls.
01
See it and copy it
Framework example
Choose Astro, React, or Elements to compare native usage against the shared visual output. Each example assumes the framework-level setup is already complete.
There is a problem
View ErrorSummary code
Framework usage
Switch targets to compare the adapter code. This live preview runs the Astro example. React and Elements use their own behavior APIs; complete the matching framework setup before copying an example.---
import { ErrorSummary, Input, Label } from '@santi020k/lumen-astro'
---
<ErrorSummary errors={{ fields: [{ controlId: 'example-email', name: 'email', message: 'Enter an email address.' }], form: [] }} />
<Label for="example-email">Email</Label>
<Input id="example-email" type="email" aria-invalid="true" />import { ErrorSummary, Input, Label } from '@santi020k/lumen-react'
export const Example = () => (
<>
<ErrorSummary errors={{ fields: [{ controlId: 'example-email', name: 'email', message: 'Enter an email address.' }], form: [] }} />
<Label htmlFor="example-email">Email</Label>
<Input id="example-email" type="email" aria-invalid="true" />
</>
)<script type="module">
import { defineLumenElements } from '@santi020k/lumen-elements/define'
defineLumenElements()
</script>
<lumen-error-summary errors={{ fields: [{ controlId: 'example-email', name: 'email', message: 'Enter an email address.' }], form: [] }}></lumen-error-summary>
<lumen-label for="example-email">Email</lumen-label>
<lumen-input id="example-email" type="email" aria-invalid="true"></lumen-input>02
Choose your target
Add this component
Choose the package for your runtime. All adapters share the Lumen stylesheet. Use the matching registry command when you want a local wrapper for that framework.
pnpm add @santi020k/lumen-astropnpm add @santi020k/lumen-astrolumen add ErrorSummarylumen add ErrorSummarypnpm add @santi020k/lumen-reactpnpm add @santi020k/lumen-reactlumen add ErrorSummary --target reactlumen add ErrorSummary --target reactpnpm add @santi020k/lumen-elementspnpm add @santi020k/lumen-elementslumen add ErrorSummary --target elementslumen add ErrorSummary --target elementsAPI reference
Lumen-specific props and runtime attributes for the Astro primitive. Use the framework differences above and the copyable examples for React composition and Elements attributes; the public adapter types define their supported contracts.
| Attribute | Values | Default | Description |
|---|---|---|---|
| errors | LumenFormErrorInput | - | Normalizes form and field errors into a linked summary. |
| heading | string | "There is a problem" | Sets the summary heading. |
| id | string | "ui-error-summary" | Sets the focus target and heading relationship. |
| class, className | string | "" | Merges custom classes with the generated ui-* root classes. |
| ...native attributes | HTML attributes | - | Forwards standard attributes to the root element unless the component consumes them. |