Zell Liew • 9/18/2019

Converting callbacks to promises

This technical article explains how to convert callback-based functions, particularly Node.js APIs, into Promises for easier asynchronous code management. It covers using Node's built-in util.promisify for standard error-first callbacks and demonstrates how to manually wrap non-standard callbacks in a custom Promise, detailing the resolve/reject logic and argument handling.

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#JavaScript #Node.js #promises