Node.js
You should define a main module named app.js
as the entry point of your Node.js application. Your Node.js code should be linted using ESLint with the recommended configuration for Node.js.
Version
Running on Node.js v20.0.0
Supported languages
Javascript
Testing framework
Special reminders and implementation details
js
const { getMessage } = require("./index");
describe("App", () => {
test("should return 'Hello world!'", () => {
const message = "Hello World!";
expect(getMessage(message)).toEqual("Hello World!");
});
});
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Included libraries
How to debug
Debugging JavaScript code is a crucial skill for any developer. One of the simplest yet effective ways to debug is by using console.log()
statements.
Steps to Debug Using Console Logs
Identify the Problem Area Locate the section of your code where you suspect the problem might be.
Insert
console.log()
Statements Addconsole.log()
statements before and after the suspected problematic code to print out variable values and flow control.Check the Results Output of your tests
Analyze the Output Look at the values printed in the console to understand what's going wrong in your code. Adjust your code based on the findings and repeat as necessary.
Here’s an example of how to use console.log()
for debugging:
JavaScript Code
javascript
function calculateSum(a, b) {
console.log("calculateSum called with arguments:", a, b); // Log function call
let sum = a + b;
console.log("Sum after addition:", sum); // Log sum calculation
return sum;
}
let result = calculateSum(5, 10);
console.log("Result of calculateSum:", result); // Log the result
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