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