function start(options) {
    options = options || {};

    var prompt = options.prompt || '> ';

    var eval = options.eval || run;

    var context = new ExecutionContext();
    var manager = new BlockManager();
    var ast = new AbstractSyntaxTree([], {}, manager);
    nextLine(context, ast, prompt, prompt, -1, eval);
}
function start(options) {
    options = options || {};

    var prompt = options.prompt || '> ';

    var eval = options.eval || run;

    var context = new ExecutionContext();
    var manager = new BlockManager();
    var ast = new AbstractSyntaxTree([], {}, manager);
    nextLine(context, ast, prompt, prompt, -1, eval);
}
function start ( options ) { options = options || { } ; var prompt = options . prompt || '> ' ; var eval = options . eval || run ; var context = new ExecutionContext ( ) ; var manager = new BlockManager ( ) ; var ast = new AbstractSyntaxTree ( [ ] , { } , manager ) ; nextLine ( context , ast , prompt , prompt , - 1 , eval ) ; }
Starts the REPL. Options can be:

- `prompt` - the prompt and `stream` for all I/O. Defaults to `> `.
- `eval` - function that will be used to eval each given line. Defaults to an async wrapper for `executor.execute`.
- `completer` - function that will be used for auto-completing.

@param {Object} options Options for the REPL
Starts the REPL . Options can be :