2017-10-27 4:00 Typescript Kris
    bug caused by invalid state writing. would not happen with strong constraints.
    bugs are easiest to find at the time invalid state is written

20017-11-17 1:00 Ion 1 Kris
    bug caused by lack of strong typing, 'name' parameter could be string or object

20017-11-19 0:10 Ion 1 Kris
    lack of strong typing caused by fix from preceding bug

20017-12-16 2:00 Ion 1 Kris
    mutable object. value changed without even being able to see where/why?

2017-12-31 2:00 Ion 1 Kris
    mutable object. value changed prematurely and non-obviously.

2018-01-17 3:00 Ion 1 Kody
    mutation of frozen object
    an object was frozen defensively and attempts were made to modify it,
    debugging was made difficult by the complexity added to the stack by the reactive runtime
    the reason the object was being frozen was unclear because Object.freeze is not declarative and can be called on anything from anywhere

2018-02-02 3:00 Ion 1 Kris
    mutation of object
    duplicate code assigning to field where I didn't expect.

2018-02-14 3:00 Ion 1 Kris
    lack of strong typing