simple stringify

simple_stringify.js

// model : https://github.com/rom1504/JsonConv/blob/master/source/json_to_json.ml

const p=require('./protocol.json');

const json_string_of_jarray=a => `[${(a.map(json_string_of_jvalue)).join(",")}]`;
const json_string_of_jobject=o => `{${Object.keys(o).map(k => '"'+k+'":'+json_string_of_jvalue(o[k])).join(",")}}`;
const json_string_of_jvalue=v => {
  if(v===null)
    return "NULL";
  if(v.constructor===Array)
    return json_string_of_jarray(v);
  if(typeof v === 'object')
    return json_string_of_jobject(v);
  if(typeof v === 'string')
    return '"'+v+'"';
  if(typeof v === 'boolean')
    return v ? "true" : "false";
  if(typeof v === 'number')
    return v;
  throw Error("unexpected type !");
}

console.log(json_string_of_jvalue(p));