knex/src/migrate/migrate-stub.js

// Stub Migrate:
// Used for now in browser builds, where filesystem access isn't
// available.
const StubMigrate = module.exports = function() {};

import Promise from 'bluebird';

const noSuchMethod = Promise.method(function() {
  throw new Error("Migrations are not supported");
});

StubMigrate.prototype = {
  make: noSuchMethod,
  latest: noSuchMethod,
  rollback: noSuchMethod,
  currentVersion: noSuchMethod
};