javascript

TypeError: Class must be called with new

Class constructor .* cannot be invoked without 'new'

Fixes

1.Use new keyword: new MyClass()
2.Check you're not calling class as function
3.Verify import is the class itself

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