优化ptz

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2024-02-29 dddc5e6586e91d81f6b51b1fcaf291a3471bd50a

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var nativeFunctionToString = require('./_function-to-string');
var WeakMap = require('./_global').WeakMap;
 
module.exports = typeof WeakMap === 'function' && /native code/.test(nativeFunctionToString.call(WeakMap));