text: // 
  
  import * as fs from 'fs';
  import * as esprima from 'esprima';         // BSD licence
  
  function string2ast (string) {
      let ast = esprima.parse(string);
      return ast;
  }
  
  function file2ast (filename) {
      return '';////////////////////
  }
  
  export let parse = string2ast;
  