Published inJavaScript in Plain English·PinnedDouble Your Income as a JavaScript/TypeScript Developer TodayThe best developers get paid more than average ones If you are a professional developer who earns money by writing JavaScript/TypeScript code, then this article will show you how to double your income. The idea is simple: the best developers get paid more than average ones. …Programming29 min readProgramming29 min read
Published inJavaScript in Plain English·PinnedDouble Your React Coding Speed With This Simple TrickIf you work with React or React Native, feel that your coding speed is slow, spend your time catching bugs, and not adding new features, work with long source files and have a hard time finding stuff, and implement the same logic over and over again, you will double your…JavaScript15 min readJavaScript15 min read
Published inJavaScript in Plain English·Dec 3, 2021I Bravely Refactored Express MongoDB App and Won a WowPolish your code. Learn how to fix lasagna architecture. — Let me tell you a story. There is a guy on Twitter. He has a solid 3k followers and growing fast. He posted an Express+MongoDB=CRUD tutorial. And people loved the tutorial! Some even call it insightful.Programming5 min readProgramming5 min read
Published inJavaScript in Plain English·Nov 26, 2021Test SQL With Node.js and JestYou will love to refactor that huge SQL in your codebase — Imagine we want to test a SQL query with Jest: SELECT TOP 1 MasterRetailPrice FROM UpcCollisionReport ORDER BY MasterRetailPrice DESC If you just run the query the results will be unpredictable. The MasterRetailPrice table may already have 1_000_000 records and grow daily. We can TRUNCATE the table and INSERT predictable…JavaScript1 min readJavaScript1 min read
Published inJavaScript in Plain English·Nov 25, 2021Coding Adventure: PositiveNumber in TypeScriptCan you make a PositiveNumber type? Learn how to write advanced rules for your TypeScript types. Can you make PositiveNumber type? On the first day of using TypeScript, I learned the basic types like number, string, and boolean. But I was quite disappointed not to find PositiveNumber. How did I suppose to write my typesafe…JavaScript5 min readJavaScript5 min read
Published inJavaScript in Plain English·Nov 23, 2021Enjoy the Сode of a Multimillion Business24 lines to demonstrate the power and beauty of TypeScript function composition. — Please, enjoy this code Look at the beauty of the code above. How nicely then(), map(), pipe() composes functions. How => strips away {} and makes you feel light and clean. How powerful domain schema abstracts away complex logic of normalization, cleaning, and validation. How we inject the SQL query into the feature. …JavaScript3 min readJavaScript3 min read
Published inJavaScript in Plain English·Jan 5, 2021Never write TypeScript types for GraphQL schema by handWhy do we want to use TypeScript? Modern software development best practices require programmers to write tons of code: Business logic Tests. Unit/Integrational/E2E and even types. Types are tests that can be run in massive amount even before you run your program Without tests, your system will be doomed to face well-known issues: Teams spend most of…GraphQL4 min readGraphQL4 min read
