You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
862 B
47 lines
862 B
'use strict';
|
|
|
|
const htmlTags = require('html-tags');
|
|
const keywordSets = require('../reference/keywordSets');
|
|
const mathMLTags = require('mathml-tag-names');
|
|
const svgTags = require('svg-tags');
|
|
|
|
/**
|
|
* Check whether a type selector is a custom element
|
|
*
|
|
* @param {string} selector
|
|
* @returns {boolean}
|
|
*/
|
|
module.exports = function (selector) {
|
|
if (!/^[a-z]/.test(selector)) {
|
|
return false;
|
|
}
|
|
|
|
if (!selector.includes('-')) {
|
|
return false;
|
|
}
|
|
|
|
const selectorLowerCase = selector.toLowerCase();
|
|
|
|
if (selectorLowerCase !== selector) {
|
|
return false;
|
|
}
|
|
|
|
if (svgTags.includes(selectorLowerCase)) {
|
|
return false;
|
|
}
|
|
|
|
if (htmlTags.includes(selectorLowerCase)) {
|
|
return false;
|
|
}
|
|
|
|
if (keywordSets.nonStandardHtmlTags.has(selectorLowerCase)) {
|
|
return false;
|
|
}
|
|
|
|
if (mathMLTags.includes(selectorLowerCase)) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
};
|