providence/modules/utils.js

Reference a sub-structure of any data structure

/**
 * utils.js
 */

'use strict';

var Immutable = require('immutable');
var Iterable = Immutable.Iterable;

module.exports = {
    valToPath: valToPath,
    newPath: newPath,
    listToKeyPath: listToKeyPath
};

function valToPath(val) {
    return Array.isArray(val) ? val : Iterable.isIterable(val) ? val.toArray() : [val];
}

function newPath(head, tail) {
    return head.concat(listToKeyPath(tail));
}

function listToKeyPath(list) {
    return Array.isArray(list) ? list : Immutable.Iterable(list).toArray();
}