Object spread operator requires specified objectAssign option with \'Object.assign\' or polyfill helper.
How do I make the following work with buble from the command line?
$ echo 'console.log({ ...{ a: 1, b : 2 } });' | babel | node
{ a: 1, b: 2 }
$ echo 'console.log({ ...{ a: 1, b : 2 } });' | buble | node
/tmp/node_modules/buble/dist/buble.deps.js:10328
throw new CompileError( this, 'Object spread operator requires specified objectAssign option with \'Object.assign\' or polyfill helper.' );
^