Complete the following functions.

function counterFactory() { // Return an object that has two methods called increment and decrement. // increment should increment a counter variable in closure scope and return it. // decrement should decrement the counter variable and return it. }

function limitFunctionCallCount(cb, n) { // Should return a function that invokes cb. // The returned function should only allow cb to be invoked n times. // Returning null is acceptable if cb can't be returned }

function cacheFunction(cb) { // Should return a function that invokes cb. // A cache (object) should be kept in closure scope. // The cache should keep track of all arguments have been used to invoke this function. // If the returned function is invoked with arguments that it has already seen // then it should return the cached result and not invoke cb again. // cb should only ever be invoked once for a given set of arguments. } Create a function for each problem in a file called counterFactory.js, limitFunctionCallCount.js, cacheFunction.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 testCounterFactory.js, testLimitFunctionCallCount.js, testCacheFunction.js and so on in a folder called test.

So your directory structure will look like this

├── counterFactory.js ├── limitFunctionCallCount.js ├── cacheFunction.js └── test ├── testCounterFactory.js ├── testLimitFunctionCallCount.js └── testCacheFunction.js

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