Deep equality for JavaScript
Strict equality only. 😎
deepEqual(val1, val2) --> boolean
deepEqual will compare the values, and if they are objects, will compare each of the objects' members to see if they're the same.
There are some special cases:
- Dates: compare
date.getTime() - Errors: compare
nameandmessage - RegExps: converted to strings & compared
- Buffers: buffer contents compared
deepEqual works correctly for NaN.