Build a Device Loan Ledger

You are a software developer tasked with creating a ledger application to manage IT hardware devices provisioned by your company's Service Desk. The ledger is an object whose keys are asset tags and whose values are objects: ```js const ledger = { "1": { type: "Laptop", status: "CheckedIn", borrower: { name: "", email: "" }, dueDate: "" } }; ``` **Objective:** Fulfill the user stories below and get all the tests to pass to complete the lab. **User Stories:** 1. You should model the ledger as an object where each device is keyed by its asset tag and has `type`, `status`, `borrower` (with `name` and `email`), and `dueDate` properties. 1. You should implement a `checkoutDevice(ledger, assetTag, borrower)` function that takes a ledger object and clones it without mutating the original. On the clone, it should set the `borrower` object's `name` and `email`, update the `status` to `"CheckedOut"`, and return an object of the form `{ ledger: updatedLedger, message: confirmationString }`, where the `message` includes the asset tag and the `borrower` object's `name`. - If `assetTag` does not exist in the ledger, the function should return the ledger unchanged along with a `message` that includes the asset tag and explains that it was not found. - If the device is already `"CheckedOut"`, the function should return the ledger unchanged and leave the current borrower in place, along with a `message` that includes the asset tag and explains that the device is already checked out. 1. You should implement a `checkinDevice(ledger, assetTag)` function that takes a ledger object and clones it without mutating the original. On the clone, it should clear the `borrower` object's `name` and `email`, reset `dueDate` to `""`, update the `status` to `"CheckedIn"`, and return an object of the form `{ ledger: updatedLedger, message: confirmationString }`, where the `message` includes the asset tag. - If `assetTag` does not exist in the ledger, the function should return the ledger unchanged along with a `message` that includes the asset tag and explains that it was not found. 1. You should implement a `listOverdueDevices(ledger, today)` function that takes a ledger object and returns an array of the device objects that are overdue, sorted by `dueDate` in ascending order. A device is overdue when its `status` is `"CheckedOut"` and its `dueDate` is strictly before `today`. Both `today` and `dueDate` are strings in month/day/year order, and the month and day may or may not be zero-padded (for example, `"9/5/2025"` and `"09/05/2025"` are both valid). 1. You should not use the JavaScript `Date` object anywhere in your code. 1. You should implement a `serializeLedger(ledger)` function that converts the ledger object into a JSON string, and a `loadLedger(json)` function that converts a JSON string back into a JavaScript object.