Build a Traffic Light Sequencer

In this lab, you will simulate configurable traffic light cycles and log anomalies. You'll work with config objects that describe the phases of a traffic light. Each config object has the following properties: - `fault`: a boolean flag that triggers early termination when `true`. - `phases`: an array of phase objects. Each phase object inside `phases` has the following properties: - `color`: a string representing the light color (`"green"`, `"yellow"`, or `"red"`). - `duration`: a positive integer representing how long the phase lasts in seconds. You can refer to the provided `config1`, `config2`, `config3`, and `config4` objects as examples of possible configuration objects. **Note**: Do not add any extra `console.log()` statements, as they may cause the tests to fail. **Objective**: Fulfill the user stories below and get all the tests to pass to complete the lab. # User Stories 1. You should have a function named `runSequence` with two parameters: `config` and `cycles`, where `config` represents a config object and `cycles` represents the maximum number of times the sequence can run before stopping. 1. You should implement `runSequence(config, cycles)` using a `for` or `while` loop to iterate through each phase across the given number of cycles. 1. The `runSequence` function should: - Log `No phases found` and immediately return if `config.phases` is empty. - Log `Faulted phase!` and stop the simulation early if `config.fault` is set to `true`. - Log `Invalid phase detected` if `duration <= 0`. - Log `Switching to [color] for [duration] s` for each valid phase. Replace `[color]` and `[duration]` with the corresponding properties of the phase object. - For example, `runSequence(config1, 1)` should log: ```md Switching to green for 5 s Switching to yellow for 2 s Switching to red for 4 s ``` 1. You should have a function named `generateTimeline` with two parameters: `config` and `cycles`. 1. The `generateTimeline` function should: - Record the cumulative elapsed time after each phase across the cycles into an array, adding each phase's `duration` to the running total as you iterate. - Process all faulted and invalid phases without validation, even if `config.fault` is `true` or `duration <= 0`. - Return the array of cumulative timestamps. - For example, `generateTimeline(config1, 1)` should return the array `[5, 7, 11]`. # --before-each-- ```js const spy = __helpers.spyOn(console, "log"); ```