object.entries-ponyfill
The implementation is the same as es-shims/Object.entries, except ES3 is not supported, therefore making this package 600 bytes rather than 28000 bytes.
built-in
You should polyfill your targeted browser environments automatically with polyfill.io, rather than using a non-tailored approach like this ponyfill. Node >= 7 has Object.entries
natively. You probably only need this ponyfill if your targeted environment is Node and is version < 7.
install
$ npm install object.entries-ponyfill
example
const entries = // => [ [ 'foo', 123 ], [ 'bar', 456 ] ]