in node.js v4.x: RangeError: Maximum call stack size exceeded

[i5ting]

  let ent1 = {key:'a', value:5, newer: undefined, older: undefined };
    let ent0 = {key:'b', value:6, newer: undefined, older: ent1 };
    ent1.newer = ent0;
    // in node.js v4.x: RangeError: Maximum call stack size exceeded
    // also see https://github.com/substack/node-deep-equal/issues/19
    // use deep-equal can be compatible with more node version
    
    // assert.deepEqual(c.newest, ent0);
    // assert.deepEqual(c.oldest, ent1);

also see inspect-js/node-deep-equal#19

use deep-equal can be compatible with more node version