新增 财产备忘本

linwenling

2023-08-08 b3ddacf9a9742276e76c0aa8bfa67fcdd6e1d7fe

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var defineWellKnownSymbol = require('../internals/well-known-symbol-define');
 
// `Symbol.observable` well-known symbol
// https://github.com/tc39/proposal-observable
defineWellKnownSymbol('observable');