Streamify the things

streamify.js

const streamify = (tree) =>
  pipe(
    keys,
    filter(key => tree.hasOwnProperty(key)),
    map(key => ({
      [`${key}$`]: typeof tree[key] === 'function' && typeof tree[key].then === 'function'
        ? (...args) => K.fromPromise(tree[key].apply(null, args))
        : typeof tree[key] === 'object'
        ? streamify(tree[key])
        : tree[key]
    })),
    mergeAll
  )(tree);