Meteor Wrapasync !!top!! -

legacyLibrary.getData(id, (err, data) => { if (err) console.error(err); console.log(data); }); I wanted to use it inside a Meteor method without nesting. Solution:

Need to use an old-school callback function in Meteor? wrapAsync has your back.

// Modern Meteor 3 approach async function fetchData() { return new Promise((resolve) => { setTimeout(() => resolve({ user: 'alice' }), 100); }); } const result = await fetchData(); Use wrapAsync for legacy callback-based npm packages, but prefer Promises + async/await in new code.

const readFileSync = Meteor.wrapAsync(fs.readFile); const content = readFileSync('/path/to/file', 'utf8'); But remember: in Meteor 3, just use fs.promises.readFile with await . Progress! ⚡

Wrap the function once outside the method to avoid re-wrapping on every call.

If you're working with asynchronous code in Meteor (especially on the server), you've likely encountered Meteor.wrapAsync .