how to use after method of lodash library in javascript

The _.after method in the lodash library allows you to create a function that can be called only after it has been invoked a certain number of times. This is useful for situations where you want to perform an action only when all of its dependencies have been completed. Here's an example:

index.tsx
const afterThreeCalls = _.after(3, () => console.log('All three calls done!'));

function someAsyncFunction(callback) {
  // Some asynchronous operation...

  // Call the callback only on the third invocation
  callback();
}

// Calls to someAsyncFunction
someAsyncFunction(afterThreeCalls);
someAsyncFunction(afterThreeCalls);
someAsyncFunction(afterThreeCalls);
364 chars
14 lines

In this example, the _.after method is used to create a function afterThreeCalls that can only be called after it has been invoked three times. Then, the function is passed as a callback to someAsyncFunction, which is called three times. The afterThreeCalls function is only executed after the third call, which triggers the console.log statement.

gistlibby LogSnag