const testObject = { name: 'Bruce Wayne', age: 36, location: 'Gotham' }; // use this object to test your functions

• Complete the following underscore functions.

• Reference http://underscorejs.org/ for examples.

• Check and use MDN as well

Create a function for each problem in a file called

    keys.js
    values.js
    pairs.js

and so on in the root of the project.

Ensure that the functions in each file is exported and tested in its own file called

    testKeys.js
    testValues.js
    testPairs.js

and so on in a folder called test.

Create a new git repo on gitlab for this project, ensure that you commit after you complete each problem in the project. Ensure that the repo is a public repo.

When you are done, send the gitlab url to your mentor

function keys(obj) {
    // Retrieve all the names of the object's properties.
    // Return the keys as strings in an array.
    // Based on http://underscorejs.org/#keys
}

function values(obj) {
    // Return all of the values of the object's own properties.
    // Ignore functions
    // http://underscorejs.org/#values
}

function mapObject(obj, cb) {
    // Like map for arrays, but for objects. Transform the value of each property in turn by passing it to the callback function.
    // http://underscorejs.org/#mapObject
}

function pairs(obj) {
    // Convert an object into a list of [key, value] pairs.
    // http://underscorejs.org/#pairs
}

STRETCH PROBLEMS

function invert(obj) {
    // Returns a copy of the object where the keys have become the values and the values the keys.
    // Assume that all of the object's values will be unique and string serializable.
    // http://underscorejs.org/#invert
}

function defaults(obj, defaultProps) {
    // Fill in undefined properties that match properties on the `defaultProps` parameter object.
    // Return `obj`.
    // http://underscorejs.org/#defaults
}