Node REPL preprocessing input string for custom eval functions

[YarnSphere]

• Version: 7.1.0
• Platform: Linux 4.8.8-2-ARCH
• Subsystem: REPL

Run the following:

require('repl').start({
  eval: function(input, context, filename, cb) {
    console.log(input);
    cb(null);
  }
});

When inside the REPL write function f() {}. The REPL will log var f = function f() {}.
This sort of preprocessing should only happen for the default eval function.

The line where the preprocessing occurs: repl.js#L503
This should probably be moved to inside the defaultEval function.

[princejwesley]

Working on it!

[princejwesley]

Landed in 9366b8