Setting a null value should convert it to object

[slavivanov]

Setting a null value should convert it to object (like it works for undefined values).

[mickhansen]

Personally I wouldn't lump in null with undefined as null can be explicitly set and have a semantic meaning.
Is using the force: true option to always override not sufficient in this case?

[slavivanov]

No, hasOwnProp.call(current, piece) fails with TypeError: Cannot convert undefined or null to object .
It should be possible to overwrite null with force: true only, but I don't think it should fail on null anyway.

[slavivanov]

Appended it to throw on overwriting null with force: false, and to overwrite null with force: true.

[mickhansen]

Awesome, thank you @slavivanov

[mickhansen]

Published in v2.0.3