110 lines
2.5 KiB
JavaScript
110 lines
2.5 KiB
JavaScript
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'use strict';
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const docsUrl = require('../util/docsUrl');
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// This list is taken from https://developer.mozilla.org/en-US/docs/Web/HTML/Inline_elements
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const INLINE_ELEMENTS = new Set([
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'a',
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'abbr',
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'acronym',
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'b',
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'bdo',
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'big',
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'br',
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'button',
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'cite',
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'code',
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'dfn',
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'em',
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'i',
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'img',
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'input',
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'kbd',
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'label',
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'map',
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'object',
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'q',
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'samp',
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'script',
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'select',
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'small',
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'span',
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'strong',
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'sub',
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'sup',
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'textarea',
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'tt',
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'var'
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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: 'Ensures inline tags are not rendered without spaces between them',
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category: 'Stylistic Issues',
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recommended: false,
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url: docsUrl('jsx-child-element-spacing')
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},
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fixable: null,
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schema: [
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{
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type: 'object',
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properties: {},
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default: {},
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additionalProperties: false
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}
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]
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},
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create(context) {
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const TEXT_FOLLOWING_ELEMENT_PATTERN = /^\s*\n\s*\S/;
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const TEXT_PRECEDING_ELEMENT_PATTERN = /\S\s*\n\s*$/;
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const elementName = node => (
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node.openingElement &&
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node.openingElement.name &&
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node.openingElement.name.type === 'JSXIdentifier' &&
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node.openingElement.name.name
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);
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const isInlineElement = node => (
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node.type === 'JSXElement' &&
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INLINE_ELEMENTS.has(elementName(node))
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);
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const handleJSX = (node) => {
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let lastChild = null;
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let child = null;
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(node.children.concat([null])).forEach((nextChild) => {
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if (
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(lastChild || nextChild) &&
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(!lastChild || isInlineElement(lastChild)) &&
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(child && (child.type === 'Literal' || child.type === 'JSXText')) &&
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(!nextChild || isInlineElement(nextChild)) &&
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true
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) {
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if (lastChild && child.value.match(TEXT_FOLLOWING_ELEMENT_PATTERN)) {
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context.report({
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node: lastChild,
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loc: lastChild.loc.end,
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message: `Ambiguous spacing after previous element ${elementName(lastChild)}`
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});
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} else if (nextChild && child.value.match(TEXT_PRECEDING_ELEMENT_PATTERN)) {
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context.report({
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node: nextChild,
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loc: nextChild.loc.start,
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message: `Ambiguous spacing before next element ${elementName(nextChild)}`
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});
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}
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}
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lastChild = child;
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child = nextChild;
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});
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};
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return {
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JSXElement: handleJSX,
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JSXFragment: handleJSX
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};
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}
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};
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