修改小问题

TM

2020-12-15 c62268b52ba62222994ccfb836384837853f890e

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if(!self.Map || !self.Set || !self.Symbol) {
    importScripts('https://gw.alipayobjects.com/as/g/appx_release/deps/1.0.3/es6-set-map-symbol.js');
     }