firebase-tools/lib/identifierToProjectId.js

'use strict';

var _ = require('lodash');

var api = require('./api');

module.exports = function(id) {
  return api.getProjects().then(function(projects) {
    // if exact match for a project id, return it
    if (_.includes(_.keys(projects), id)) {
      return id;
    }

    for (var projectId in projects) {
      if (projects.hasOwnProperty(projectId)) {
        var instance = _.get(projects, [projectId, 'instances', 'database', '0']);
        if (id === instance) {
          return projectId;
        }
      }
    }

    return null;
  });
};