1  const repl = require("repl");
 2  const util = require("util");
 3  let fs = require('../../lib/core/fs');
 4  
 5  class REPL {
 6    constructor(options) {
 7      this.events = options.events;
 8      this.env = options.env;
 9    }
10  
11    enhancedEval(cmd, context, filename, callback) {
12      this.events.request('console:executeCmd', cmd.trim(), function (err, message) {
13        callback(err, message || ''); // This way, we don't print undefined
14      });
15    }
16  
17    enhancedWriter(output) {
18      if ((typeof output) === "string") {
19        return output;
20      }
21      return util.inspect(output, {colors: true});
22    }
23  
24    start(done) {
25      this.replServer = repl.start({
26        prompt: "Embark (" + this.env + ") > ",
27        useGlobal: true,
28        eval: this.enhancedEval.bind(this),
29        writer: this.enhancedWriter.bind(this)
30      });
31  
32      this.events.request('console:history', (err, history) => {
33        history
34          .split('\n')
35          .forEach((cmd) => { this.replServer.history.push(cmd); });
36      });
37  
38      this.events.request("runcode:getContext", (context) => {
39        this.replServer.context = context;
40      });
41  
42      this.replServer.on("exit", () => {
43        process.exit();
44      });
45  
46      done();
47    }
48  }
49  
50  module.exports = REPL;