Articles tagged in: Node.js

Node.js — How to Fix ESM Error “Directory import is not supported resolving ES modules imported”

ECMAScript modules are an official standard describing a format on how to write reusable JavaScript code. Browsers used ECMAScript modules and Node.js had their own module loading implementation: CommonJS. Node.js added full ESM support starting from version 12. At the time of writing this tutorial, developers migrate their …

Continue Reading

JavaScript — Cache Computation Results in a Local Variable

We’re using a small performance optimization in our code bases: caching computation results in local variables. Saving results in a local variable is borrowed from the memoization technique. Memoizing values improves the performance of function execution by storing the results and reusing them for a function call. This tutorial …

Continue Reading

JavaScript — Prevent Line Breaks in String Template Literals

Template literates in JavaScript are delimited with backticks and allow you to create string interpolation and multi-line strings. A multi-line string with template literals is convenient because you can add words and line breaks without concatenating strings using a + across lines. A downside of multi-line strings in template literals: it …

Continue Reading

Node.js — What is `Symbol.iterator`?

JavaScript has support for iteration protocols. These iteration protocols aren’t built-in implementations, but protocols outlining the convention that an implementation needs to follow. The Iteration protocol allows custom JavaScript objects to provide iteration behavior, for example how they provide values when looping over them in a for…of loop. …

Continue Reading
Page 1 of 43

Explore the Library

Find interesting tutorials and solutions for your problems.