trailing-comma.js

// The diff between the following two definitions has one line: `+c: 3,`:
var o1 = {
    a: 1,
    b: 2,
};
var o1 = {
    a: 1,
    b: 2,
    c: 3,
};

// The diff between the following two definitions has three lines: `-b: 2`, `+b: 2,`, `+c: 3`:
var o2 = {
    a: 1,
    b: 2
};
var o2 = {
    a: 1,
    b: 2,
    c: 3
};