script to make a diff between 2 protodef protocols

protocol-diff.js

const equal = require('deep-equal');

if(process.argv.length != 4) {
  console.log("Usage : node protocol-diff.js <protocol1.json> <protocol2.json>");
  process.exit(1);
}

const p1File=process.argv[2];
const p2File=process.argv[3];

const p1=require(p1File);
const p2=require(p2File);

function produceDiff(p1,p2)
{
  let o=Object
    .keys(p2)
    .filter(n => n!='types')
    .reduce((acc,name) => {
      const diff=produceDiff(p1[name],p2[name]);
      if(Object.keys(diff).length!=0) acc[name]=diff;
      return acc;
    },{});
  const diff1=produceTypesDiff(p1['types'],p2['types']);
  const diff2=produceTypesDiff(p2['types'],p1['types']);
  if(diff2 && Object.keys(diff2).length!=0)
    o['oldTypes']=diff2;
  if(diff1 && Object.keys(diff1).length!=0)
    o['newTypes']=diff1;
  return o;
}

function produceTypesDiff(types1,types2)
{
  if(types2 == undefined)
    return undefined;
  return Object
    .keys(types2)
    .reduce((acc,name)=> {
      if(!equal(types1[name],types2[name])) acc[name]=types2[name];
      return acc;
    },{})
}

console.log(JSON.stringify(produceDiff(p1,p2),null,2));