4 const keywordSets = require("../reference/keywordSets");
7 * Check whether a string is a keyframe selector.
9 module.exports = function(selector /*: string*/) /*: boolean*/ {
10 if (keywordSets.keyframeSelectorKeywords.has(selector)) {
15 if (/^(?:\d+\.?\d*|\d*\.?\d+)%$/.test(selector)) {