The rebalancing crew’s Python script still runs before every shift, and the crew lead is waiting for the JavaScript version. You’ll port it one piece at a time, and the first piece is the smallest: the lines that give one dock’s numbers a name. This morning, Harbor Square has 14 bikes and 1 free slot.
In Python, naming a value takes nothing more than =. In JavaScript, every name starts with a keyword, and the keyword you pick tells the reader whether the name will ever be reassigned.
Declare Each Name Once
The Python script opens with a comment and three assignments, then prints them:
# Harbor Square, from this morning's dock list
name = "Harbor Square"
bikes = 14
slots = 1
print(name, bikes, slots)
Your port goes in dock-report.js, in a folder named dock-report/ whose package.json holds { "type": "module" }.
In JavaScript, every name starts with a declaration. The "type": "module" setting runs the file in strict mode, where assigning to a name that was never declared stops the file with a ReferenceError. Here’s Harbor Square in JavaScript, each name declared with const:
// Harbor Square, from this morning's dock list
const name = "Harbor Square";
const bikes = 14;
const slots = 1;
console.log(name, bikes, slots);
Run it with node dock-report.js, and it prints what Python did:
