util.isUndefined(object)
Stability: 0 - Deprecated
Returns true if the given "object" is undefined. Otherwise, returns false.
1 2 3 4 5 6 7 8 9 | const util = require('util');var foo;util.isUndefined(5) // falseutil.isUndefined(foo) // trueutil.isUndefined(null) // false |
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