import assert

EQ = assert.strictEqual
foo = { a: "A" }

# `b` should not be defined
EQ foo.b, undefined

# Extend foo with `b` and `c` from an object
extend foo, {b: 'B', c: ^{ "C" }}

EQ foo.b, 'B'
EQ (typeof foo.c, 'function')
EQ foo.c(), 'C'
EQ foo.d, undefined