103 lines
2.9 KiB
JavaScript
103 lines
2.9 KiB
JavaScript
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/**
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* @fileoverview Prevent extra closing tags for components without children
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* @author Yannick Croissant
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*/
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'use strict';
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const docsUrl = require('../util/docsUrl');
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const jsxUtil = require('../util/jsx');
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// ------------------------------------------------------------------------------
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// Rule Definition
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// ------------------------------------------------------------------------------
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const optionDefaults = {component: true, html: true};
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module.exports = {
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meta: {
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docs: {
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description: 'Prevent extra closing tags for components without children',
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category: 'Stylistic Issues',
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recommended: false,
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url: docsUrl('self-closing-comp')
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},
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fixable: 'code',
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schema: [{
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type: 'object',
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properties: {
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component: {
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default: optionDefaults.component,
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type: 'boolean'
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},
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html: {
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default: optionDefaults.html,
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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(context) {
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function isComponent(node) {
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return (
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node.name &&
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(node.name.type === 'JSXIdentifier' || node.name.type === 'JSXMemberExpression') &&
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!jsxUtil.isDOMComponent(node)
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);
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}
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function childrenIsEmpty(node) {
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return node.parent.children.length === 0;
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}
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function childrenIsMultilineSpaces(node) {
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const childrens = node.parent.children;
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return (
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childrens.length === 1 &&
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(childrens[0].type === 'Literal' || childrens[0].type === 'JSXText') &&
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childrens[0].value.indexOf('\n') !== -1 &&
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childrens[0].value.replace(/(?!\xA0)\s/g, '') === ''
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);
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}
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function isShouldBeSelfClosed(node) {
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const configuration = Object.assign({}, optionDefaults, context.options[0]);
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return (
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configuration.component && isComponent(node) ||
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configuration.html && jsxUtil.isDOMComponent(node)
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) && !node.selfClosing && (childrenIsEmpty(node) || childrenIsMultilineSpaces(node));
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}
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// --------------------------------------------------------------------------
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// Public
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// --------------------------------------------------------------------------
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return {
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JSXOpeningElement(node) {
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if (!isShouldBeSelfClosed(node)) {
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return;
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}
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context.report({
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node,
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message: 'Empty components are self-closing',
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fix(fixer) {
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// Represents the last character of the JSXOpeningElement, the '>' character
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const openingElementEnding = node.range[1] - 1;
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// Represents the last character of the JSXClosingElement, the '>' character
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const closingElementEnding = node.parent.closingElement.range[1];
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// Replace />.*<\/.*>/ with '/>'
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const range = [openingElementEnding, closingElementEnding];
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return fixer.replaceTextRange(range, ' />');
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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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