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JavaScript Node.js Basics 2017 Building a Command Line Application Getting the Response Body

Susan Rusie
Susan Rusie
10,671 Points

Why do I keep getting this error?

$ node app.js
                                                        let body = "";

SyntaxError: Block-scoped declarations (let, const, function, class) not yet sup
ported outside strict mode
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:373:25)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Function.Module.runMain (module.js:441:10)
    at startup (node.js:139:18)
    at node.js:968:3

I have looked over this code and can't find my mistake. What am I missing? Any help on this is greatly appreciated. Please and thank you in advance.

Here is my code:

// Problem: We need a simple way to look at a user's badge count and JavaScript points
// Solution: Use Node.js to connect to Treehouse's API to get profile information to print outerHTML

// Require https module
const https = require('https');
const username = "chalkers";

//Function to print message to console
function printMessage(username, badgeCount, points) {
    const message = '${username} has ${badgeCount} total badge(s) and ${points} points in JavaScript';

// Connect to the API URL (https://teamtreehouse.com/username.json)
const request = https.get(`https://teamtreehouse.com/${username}.json`, response => {
                            let body = "";
                            //Read the data
                            response.on('data', data => {
                                body += data.toString();

                            response.on('end', () => {
                            // Parse the data
                            console.log(typeof body);
                            // Print the data


2 Answers

It depends on your version of node.js, the latest version of node no longer requires strict mode for ES6. I didn't have the issue. http://node.green/ shows what is supported.

Try adding "use strict"; at the beginning of the file

Susan Rusie
Susan Rusie
10,671 Points

Thank you. That was what was needed to make the program work the way it should. I wish they would have mentioned that in the video, though.