dbMigrations.js

export const migrateToV2 = function(tasks) {
    let promises = []
    let migrate = (key, task) =>
        new Promise((resolve, reject) => {
            let timing = {}
            let update = false

            if (task.start) {
                update = true
                timing.start = task.start
                delete task.start
            }

            if (task.stop) {
                timing.stop = task.stop
                delete task.stop
            }

            if (update) {
                task.timings = [timing]
            }

            resolve({
                key,
                task
            })
        })

    Object.keys(tasks).forEach(k => promises.push(migrate(k, tasks[k])))

    return Promise.all(promises)
}