@ariatype/ariatype

Ariatype provides TypeScript with complete type definitions for WAI-ARIA accessibility. The goal of this project is to further enhance developer experience and understanding of WAI-ARIA accessibility best practices.

Installation

npm install @ariatype/ariatype -D

Usage

import { AriaTypes } from "@ariatype/ariatype";

const aria: AriaTypes = {
  "aria-atomic": "true",
  role: "alert",
};

Requiring Aria Attributes

Use PartiallyRequiredAriaTypes to require WAI-Attributes for a TypeScript type:

import type { PartiallyRequiredAriaTypes } from "@ariatype/ariatype";

// Valid
const aria: PartiallyRequiredAriaTypes<"aria-atomic" | "role"> = {
  "aria-atomic": "true",
  role: "alert",
};

// Invalid
// Property "aria-atomic" missing
const aria: PartiallyRequiredAriaTypes<"aria-atomic" | "role"> = {
  role: "alert",
};

Example Use Case

The following example shows how Ariatype may be used to enforce type-safe WAI-ARIA attributes on a React component using PartiallyRequiredAriaTypes:

import type { PartiallyRequiredAriaTypes } from "@ariatype/ariatype";
import type { ReactNode } from "react";

interface Props extends
  PartiallyRequiredAriaTypes<"aria-atomic" | "role"> {
    children: ReactNode;
  };

export const Component = ({ children, ...props }: Props) =>
  <div {...props}>{children}</div>;

// Valid
<Component aria-atomic="true" role="alert">Component</Component>

// Missing the following properties from type 'Props':
// "aria-atomic", role
<Component>Component</Component>

Packages

Ariatype is a bundle of multiple packages:

• @ariatype/aria-attributes:
  • ariaAttributes: all aria attributes
  • AriaAttribute: aria attribute type
  • AriaAttributes: aria attributes type
• @ariatype/aria-attributes-drag-and-drop:
  • ariaAttributesDragAndDrop: all drag-and-drop aria attributes
  • AriaAttributeDragAndDrop: drag-and-drop aria attribute type
  • AriaAttributesDragAndDrop: drag-and-drop aria attributes type
• @ariatype/aria-attributes-global:
  • ariaAttributesGlobal: all global aria attributes
  • AriaAttributeGlobal: global aria attribute type
  • AriaAttributesGlobal: global aria attributes type
• @ariatype/aria-attributes-live-region:
  • ariaAttributesLiveRegion: all live region aria attributes
  • AriaAttributeLiveRegion: live region aria attribute type
  • AriaAttributesLiveRegion: live region aria attributes type
• @ariatype/aria-attributes-relationship:
  • ariaAttributesRelationship: all relationship aria attributes
  • AriaAttributeRelationship: relationship aria attribute type
  • AriaAttributesRelationship: relationship aria attributes type
• @ariatype/aria-attributes-widget:
  • ariaAttributesWidget: all widget aria attributes
  • AriaAttributeWidget: widget aria attribute type
  • AriaAttributesWidget: widget aria attributes type
• @ariatype/aria-roles:
  • ariaRoles: all aria roles
  • AriaRole: aria roles type
  • AriaRoles: aria roles type
• @ariatype/aria-roles-composite:
  • ariaRolesComposite: all composite aria roles
  • AriaRoleComposite: composite aria roles type
  • AriaRolesComposite: composite aria roles type
• @ariatype/aria-roles-document-structure:
  • ariaRolesDocumentStructure: all document structure aria roles
  • AriaRoleDocumentStructure: document structure aria roles type
  • AriaRolesDocumentStructure: document structure aria roles type
• @ariatype/aria-roles-generic:
  • ariaRolesGeneric: all generic aria roles
  • AriaRoleGeneric: generic aria roles type
  • AriaRolesGeneric: generic aria roles type
• @ariatype/aria-roles-landmark:
  • ariaRolesLandmark: all landmark aria roles
  • AriaRoleLandmark: landmark aria roles type
  • AriaRolesLandmark: landmark aria roles type
• @ariatype/aria-roles-live-region:
  • ariaRolesLiveRegion: all live region aria roles
  • AriaRoleLiveRegion: live region aria roles type
  • AriaRolesLiveRegion: live region aria roles type
• @ariatype/aria-roles-widget:
  • ariaRolesWidget: all widget aria roles
  • AriaRoleWidget: widget aria roles type
  • AriaRolesWidget: widget aria roles type
• @ariatype/aria-roles-window:
  • ariaRolesWindow: all window aria roles
  • AriaRoleWindow: window aria roles type
  • AriaRolesWindow: window aria roles type

Resources

• https://www.w3.org/WAI/standards-guidelines/aria