增加通用光电报警查看

‘liusuyi’

2023-07-12 18fa1385119350cebf6fb55a33a31fda263dba95

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// 20.2.2.28 Math.sign(x)
var $export = require('./_export');
 
$export($export.S, 'Math', { sign: require('./_math-sign') });