Since Chrome 36 is released the Object.observe function is enabled and in observe-js used. The problem is this lib is outdated. The lib has the wrong record types.
| current type |
needed type |
| new |
add |
| updated |
update |
| deleted |
delete |
| - |
reconfigure |
| - |
setPrototype |
| - |
preventExtensions |
ECMA - Observe public API