Member predicate Expr :: inNullSensitiveContext

Holds if the syntactic context that the expression appears in relies on the expression being non-null/non-undefined.

A context relies on the subexpression being non-null/non-undefined if either…

Using null or undefined would cause a runtime error
Using null or undefined would cause no error due to type conversion, but the behavior in the broader context is sufficiently non-obvious to warrant explicitly converting to ensure that readers understand the intent


                            
                                
                                    predicate
                                
                                 
                            
                            
                                inNullSensitiveContext
                            
                            
                                (
                                )