增加：地形标定管理

liusuyi

2024-06-22 59dd637267a99eadd2c5cf0b8d59e8dc4fbb6b26

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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));