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Filename :
esnext.map.delete-all.js
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'use strict'; var $ = require('../internals/export'); var aMap = require('../internals/a-map'); var remove = require('../internals/map-helpers').remove; // `Map.prototype.deleteAll` method // https://github.com/tc39/proposal-collection-methods $({ target: 'Map', proto: true, real: true, forced: true }, { deleteAll: function deleteAll(/* ...elements */) { var collection = aMap(this); var allDeleted = true; var wasDeleted; for (var k = 0, len = arguments.length; k < len; k++) { wasDeleted = remove(collection, arguments[k]); allDeleted = allDeleted && wasDeleted; } return !!allDeleted; } });