Created
July 24, 2019 03:22
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Babel 的 _instanceof
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| function _instanceof(left, right) { | |
| if (right != null && typeof Symbol !== "undefined" && right[Symbol.hasInstance]) { | |
| return !!right[Symbol.hasInstance](left); | |
| } else { | |
| return left instanceof right; | |
| } | |
| } |
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