Convert between Promises and callbacks - Promises and Async/Await in JavaScript

Convert between Promises and callbacks Callback styles Node-style callbacks Convert callbacks to Promises Promise constructor Promisified functions util.promisify Usual problems Handle this function.length Convert Promises to callbacks

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Convert between Promises and callbacks Callback styles Node-style callbacks Convert callbacks to Promises Promise constructor Promisified functions util.promisify Usual problems Handle this function.length Convert Promises to callbacks