71 lines
1.5 KiB
JavaScript
Executable File
71 lines
1.5 KiB
JavaScript
Executable File
/**
|
|
* @fileoverview Enforce no duplicate props
|
|
* @author Markus Ånöstam
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
const has = require('has');
|
|
const docsUrl = require('../util/docsUrl');
|
|
|
|
// ------------------------------------------------------------------------------
|
|
// Rule Definition
|
|
// ------------------------------------------------------------------------------
|
|
|
|
module.exports = {
|
|
meta: {
|
|
docs: {
|
|
description: 'Enforce no duplicate props',
|
|
category: 'Possible Errors',
|
|
recommended: true,
|
|
url: docsUrl('jsx-no-duplicate-props')
|
|
},
|
|
|
|
schema: [{
|
|
type: 'object',
|
|
properties: {
|
|
ignoreCase: {
|
|
type: 'boolean'
|
|
}
|
|
},
|
|
additionalProperties: false
|
|
}]
|
|
},
|
|
|
|
create(context) {
|
|
const configuration = context.options[0] || {};
|
|
const ignoreCase = configuration.ignoreCase || false;
|
|
|
|
return {
|
|
JSXOpeningElement(node) {
|
|
const props = {};
|
|
|
|
node.attributes.forEach((decl) => {
|
|
if (decl.type === 'JSXSpreadAttribute') {
|
|
return;
|
|
}
|
|
|
|
let name = decl.name.name;
|
|
|
|
if (typeof name !== 'string') {
|
|
return;
|
|
}
|
|
|
|
if (ignoreCase) {
|
|
name = name.toLowerCase();
|
|
}
|
|
|
|
if (has(props, name)) {
|
|
context.report({
|
|
node: decl,
|
|
message: 'No duplicate props allowed'
|
|
});
|
|
} else {
|
|
props[name] = 1;
|
|
}
|
|
});
|
|
}
|
|
};
|
|
}
|
|
};
|