Immutability and Mutability in JavaScript

Tasks

The tasks are in the 1_task and 3_task folders.

Please do not execute functions in the task*.js files, because the same file is used for testing and we do not want to call anything, when the module is loaded.

Use the playground.js to import and try out the files if necessary.

You can run all tests with:

npm test

Run tests only for task1 or task3:

npm test -- task1
npm test -- task3

Background Materials

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures
• https://react.dev/learn/updating-objects-in-state
• https://react.dev/learn/updating-arrays-in-state