the-forest/client/node_modules/eslint-plugin-react/lib/rules/jsx-props-no-spread-multi.js
2024-09-17 20:35:18 -04:00

54 lines
1.4 KiB
JavaScript

/**
* @fileoverview Prevent JSX prop spreading the same expression multiple times
* @author Simon Schick
*/
'use strict';
const docsUrl = require('../util/docsUrl');
const report = require('../util/report');
// ------------------------------------------------------------------------------
// Rule Definition
// ------------------------------------------------------------------------------
const messages = {
noMultiSpreading: 'Spreading the same expression multiple times is forbidden',
};
module.exports = {
meta: {
docs: {
description: 'Disallow JSX prop spreading the same identifier multiple times',
category: 'Best Practices',
recommended: false,
url: docsUrl('jsx-props-no-spread-multi'),
},
messages,
},
create(context) {
return {
JSXOpeningElement(node) {
const spreads = node.attributes.filter(
(attr) => attr.type === 'JSXSpreadAttribute'
&& attr.argument.type === 'Identifier'
);
if (spreads.length < 2) {
return;
}
// We detect duplicate expressions by their identifier
const identifierNames = new Set();
spreads.forEach((spread) => {
if (identifierNames.has(spread.argument.name)) {
report(context, messages.noMultiSpreading, 'noMultiSpreading', {
node: spread,
});
}
identifierNames.add(spread.argument.name);
});
},
};
},
};