javascript

TypeError: Derived constructor must return object

Derived.*must return object or undefined

Fixes

1.Remove or fix return statement in constructor
2.Return object or don't return anything
3.Call super() before returning

TypeErrorruntimeclass

Related Errors

javascript3 fixes

Cannot read property of undefined

Cannot read propert(y|ies) of undefined

•Add optional chaining (?.)
•Check if object exists before accessing

javascript3 fixes

Cannot read property of null

Cannot read propert(y|ies) of null

•Add null check before access
•Use optional chaining (?.)

javascript3 fixes

TypeError: X is not a function

is not a function

•Check spelling of method name
•Verify import is correct