Concept for allowing JSON to inherit from other defs

underover.js

var fs = require('fs');
var _ = require('lodash');

var defs = fs.readFileSync('servicedefs.json', {encoding:'utf8'});
var defsJson = JSON.parse(defs);
var indexedDefs = _.indexBy(defsJson, 'id');

_.each(indexedDefs, function(def, index) {
  var current = def;
  while ( _.has(def, 'under') ) {
    var ref = indexedDefs[def.under];
    if ( ! ref ) {
      throw "could not resolve under [" + def.under + "]";
    }
    delete def.under;
    var underClone = _.clone(ref);
    _.merge(underClone, def);
    current = underClone;
  }
  indexedDefs[index] = current;
});

console.log(JSON.stringify(indexedDefs,null,'  '));