Abstraction for encapsulating a piece of data behind a simple unified interface: get, set, observe
^5.0.0
^4.17.21
^4.0.0
^4.0.7
>=4 <6
^5.0.1
^1.0.1
^3.0.1
^1.0.2
^3.3.0
^29.5.11
^4.14.200
^1.0.0
^2.4.1
^1.5.2
^5.0.3