Get value by object path

object-path.js

// LONG VERSION WITH ERROR LOGGING
function getValueByObjectPath (obj, path) {
  const pathSplit = path.split('.');
  return pathSplit.reduce((value, pathPart, depth) => {
    try {
      return value[pathPart];
    }
    catch (err) {
      let pathSoFar = '';
      for (let i = 0; i < depth; i++) {
        pathSoFar += pathSplit[i];
        if (i !== depth - 1) pathSoFar += '.';
      }
      console.warn(`Failed to get property '${pathPart}' at ${pathSoFar} in object:`, obj);
      throw err;
    }
  }, obj);
}

object-path.short.js

// SHORT VERSION WITHOUT ERROR LOGGING
function getValueByObjectPath (obj, path) {
  return path.split('.').reduce((value, pathPart) => {
    try {
      return value[pathPart];
    }
    catch (err) {
      throw err;
    }
  }, obj);
}