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'use strict';
const cmp = require('semver/functions/cmp');
const semver = require('semver/functions/coerce');
const has = Function.call.bind({}.hasOwnProperty);
function compare(a, operator, b) {
return cmp(semver(a), operator, semver(b));
}
function filterOutStabilizedProposals(modules) {
const modulesSet = new Set(modules);
for (const $module of modulesSet) {
if ($module.startsWith('esnext.') && modulesSet.has($module.replace(/^esnext\./, 'es.'))) {
modulesSet.delete($module);
}
}
return [...modulesSet];
}
function intersection(list, order) {
const set = list instanceof Set ? list : new Set(list);
return order.filter(name => set.has(name));
}
function sortObjectByKey(object, fn) {
return Object.keys(object).sort(fn).reduce((memo, key) => {
memo[key] = object[key];
return memo;
}, {});
}
module.exports = {
compare,
filterOutStabilizedProposals,
has,
intersection,
semver,
sortObjectByKey,
};