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add example for “not an error suppression” #96

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Jun 25, 2019
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add example for “not an error suppression” #96

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1 change: 1 addition & 0 deletions README.md
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Expand Up @@ -306,6 +306,7 @@ No. Optional Chaining just checks whether some value is undefined or null. It do
undeclared_var?.b // ReferenceError: undeclared_var is not defined
arguments?.callee // TypeError: 'callee' may not be accessed in strict mode
arguments.callee?.() // TypeError: 'callee' may not be accessed in strict mode
true?.() // TypeError: true is not a function
})()
```

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