I use Next.js. I have one file with code:
export let counter = 0;
In the first file of api route /api/test1 I add number to counter:
counter += 5;
In the seconds file of api /api/test2 I want to get updated a value of counter:
console.log('counter', counter); // 5
But I get 0;
How can I get the current counter value in seconds file?
p.s. I simplified the task, using the example of a counter.
During development, and because of hot reload, Next.js clears the Node.js cache on every request, resetting any variable in memory.
So fare a solution is to use the global object, for example like so:
class Counter {
private count: number;
constructor() {
this.count = 0;
}
increment() {
this.count++;
}
decrement() {
this.count--;
}
getCount() {
return this.count;
}
}
let counter: Counter;
declare global {
var counter: Counter;
}
if (process.env.NODE_ENV === "production") {
counter = new Counter();
} else {
if (!global.counter) {
global.counter = new Counter();
}
counter = global.counter;
}
export { counter };
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