Merge remote-tracking branch 'origin/master'

doum

昨天 2f3221b7c90d5663fdb312653a2d188bc4628370

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'use strict';
// https://github.com/tc39/proposal-symbol-predicates
require('../modules/esnext.symbol.is-registered-symbol');
require('../modules/esnext.symbol.is-well-known-symbol');