82 lines
2.0 KiB
JavaScript
82 lines
2.0 KiB
JavaScript
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/**
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* @fileoverview Prevent multiple component definition per file
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* @author Yannick Croissant
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*/
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'use strict';
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const values = require('object.values');
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const Components = require('../util/Components');
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const docsUrl = require('../util/docsUrl');
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const report = require('../util/report');
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// ------------------------------------------------------------------------------
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// Rule Definition
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// ------------------------------------------------------------------------------
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const messages = {
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onlyOneComponent: 'Declare only one React component per file',
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};
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/** @type {import('eslint').Rule.RuleModule} */
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module.exports = {
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meta: {
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docs: {
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description: 'Disallow multiple component definition per file',
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category: 'Stylistic Issues',
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recommended: false,
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url: docsUrl('no-multi-comp'),
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},
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messages,
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schema: [{
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type: 'object',
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properties: {
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ignoreStateless: {
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default: false,
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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: Components.detect((context, components, utils) => {
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const configuration = context.options[0] || {};
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const ignoreStateless = configuration.ignoreStateless || false;
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/**
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* Checks if the component is ignored
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* @param {Object} component The component being checked.
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* @returns {Boolean} True if the component is ignored, false if not.
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*/
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function isIgnored(component) {
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return (
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ignoreStateless && (
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/Function/.test(component.node.type)
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|| utils.isPragmaComponentWrapper(component.node)
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)
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);
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}
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return {
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'Program:exit'() {
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if (components.length() <= 1) {
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return;
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}
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values(components.list())
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.filter((component) => !isIgnored(component))
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.slice(1)
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.forEach((component) => {
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report(context, messages.onlyOneComponent, 'onlyOneComponent', {
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node: component.node,
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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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