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// @ts-check
const {aria, roles} = require('aria-query')
const {getPropValue, propName} = require('jsx-ast-utils')
const {getRole} = require('../utils/get-role')
module.exports = {
meta: {
docs: {
description:
'Enforce that elements with explicit or implicit roles defined contain only `aria-*` properties supported by that `role`.',
url: require('../url')(module),
},
schema: [],
},
create(context) {
return {
JSXOpeningElement(node) {
// Get the element’s explicit or implicit role
const role = getRole(context, node)
// Return early if role could not be determined
if (!role) return
// Get allowed ARIA attributes:
// - From the role itself
let allowedProps = Object.keys(roles.get(role)?.props || {})
// - From parent roles
for (const parentRole of roles.get(role)?.superClass.flat() ?? []) {
allowedProps = allowedProps.concat(Object.keys(roles.get(parentRole)?.props || {}))
}
// Dedupe, for performance
allowedProps = Array.from(new Set(allowedProps))
// Get prohibited ARIA attributes:
// - From the role itself
let prohibitedProps = roles.get(role)?.prohibitedProps || []
// - From parent roles
for (const parentRole of roles.get(role)?.superClass.flat() ?? []) {
prohibitedProps = prohibitedProps.concat(roles.get(parentRole)?.prohibitedProps || [])
}
// - From comparing allowed vs all ARIA attributes
prohibitedProps = prohibitedProps.concat(aria.keys().filter(x => !allowedProps.includes(x)))
// Dedupe, for performance
prohibitedProps = Array.from(new Set(prohibitedProps))
for (const prop of node.attributes) {
// Return early if prohibited ARIA attribute is set to an ignorable value
if (getPropValue(prop) == null || prop.type === 'JSXSpreadAttribute') return
if (prohibitedProps?.includes(propName(prop))) {
context.report({
node,
message: `The attribute ${propName(prop)} is not supported by the role ${role}.`,
})
}
}
},
}
},
}