Implementation of type checking functions for JavaScript which wrap around the many inconsistencies in the core langauge.
Checking instanceof import, valid TypeScript produces runtime errors; valid runtime JS is invalid TS
This is the behavior in every version I tried, and I reviewed the FAQ for entries about 'Common "Bugs" That Aren't Bugs' and ...
In JavaScript, there are several ways to check the type of data, and among them, instanceof is an important mechanism for ...
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