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