优化ptz的websocket推送

‘liusuyi’

2023-06-24 388aba5a9bf187edada44787a9268401d01b7a59

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// https://github.com/tc39/proposal-relative-indexing-method
require('../modules/es.string.at-alternative');
require('../modules/esnext.array.at');
require('../modules/esnext.typed-array.at');