Sentiment Analysis in Node.js Without External APIs
Add sentiment analysis to any Node.js app using the AFINN-165 lexicon. No paid APIs, no Python, no ML models. Working code examples with real output.
Blog
Articles on text analysis, readability, and developer tooling.
I Built a Free Hemingway Editor Alternative That Runs in Your Browser
Hemingway Editor uses 1 readability formula. ProseScore uses 8 and runs 100% client-side. Here's why I built it and how the consensus scoring works.
A Developer's Guide to Readability Formulas: Comparing All 8
Compare 8 readability formulas — Flesch-Kincaid, Gunning Fog, SMOG, Dale-Chall, and more. Learn what each measures, when to use it, and how they differ.
How to Score Readability: A Developer's Guide to the 8 Major Formulas
Learn how Flesch-Kincaid, Gunning Fog, Coleman-Liau, and 5 other readability formulas work under the hood, and how to use them in your Node.js projects with a single function call.
Build a Content Quality Checker in 10 Lines of TypeScript
Build a working content quality gate in TypeScript using textlens to check readability, sentence length, and sentiment in 10 lines of code.
How to Score Your Content for Readability and SEO with TypeScript
Use textlens — a zero-dependency TypeScript toolkit — to measure readability, sentiment, SEO, and more. Works as a library and CLI.