aws request document dsl in javascript

dsl.js

const {__, curry, is, map, merge, objOf} = require("ramda");

const makeArrayDoc = curry((list, containerName, doc) =>
    is(Array, list) ?
        merge(objOf(containerName, list), doc) :
        merge(objOf(containerName, [list]), doc));

const makeListOf = curry((list, fn, name, doc) => {
    const objs = map(([key, val]) => fn(key, val), list);
    return merge(objOf(name, objs), doc);
});

const filtered = (key, value) =>
  ({Name: key, Values: [value]});

const tagged = (key, value) =>
    ({Key: key, Value: value});

const owners = makeArrayDoc(__, "Owners");
const mine = (doc) => owners("self", doc);
const resources = makeArrayDoc(__, "Resources");
const filters = makeListOf(__, filtered, "Filters");
const tags = makeListOf(__, tagged, "Tags");

module.exports = {
    filters,
    mine,
    owners,
    resources,
    tags
};

index.js

const {curry, pipe} = require("ramda");
const {filters, mine, owners, resources, tags} = require("./lib/aws/dsl");

const descImgParams = pipe(
  mine,
  filters([
    ["tag:Type", "docker-base"]
  ])
);

const tagPairingInstance = curry((instanceId, instanceName, doc) =>
  pipe(
    resources(instanceId),
    tags([
      ["Name", instanceName],
      ["Type", "pairing"]
    ])
  )(doc)
);

console.log(descImgParams({}));
console.log("");
console.log(tagPairingInstance("i-1234567", "foo-bar-baz", {}));

use [].concat(arg) for coercing between non array value and array instead of type sniffing

also lenses are your friend