Notes on web technologies, engineering tradeoffs, and front-end architecture.https://www.echooff.dev/https://www.echooff.dev/blog/prefer-task-over-promise-typescripthttps://www.echooff.dev/blog/prefer-task-over-promise-typescriptPromises make asynchronous work easy to write, but they hide failure in an untyped rejection path. Task from true-myth makes asynchronous success and failure explicit in TypeScript.Sat, 07 Mar 2026 09:12:00 GMThttps://www.echooff.dev/blog/avoid-throwing-for-expected-failures-typescripthttps://www.echooff.dev/blog/avoid-throwing-for-expected-failures-typescriptUse Result in TypeScript for expected failures, Maybe for absence, and reserve exceptions for truly exceptional situations.Sat, 07 Mar 2026 07:21:00 GMThttps://www.echooff.dev/blog/avoid-null-typescripthttps://www.echooff.dev/blog/avoid-null-typescriptWhy null still causes bugs in TypeScript - and how Maybe types make absence explicit.Wed, 04 Mar 2026 07:04:00 GMThttps://www.echooff.dev/blog/dependency-injection-without-frameworks-in-typescripthttps://www.echooff.dev/blog/dependency-injection-without-frameworks-in-typescriptExplicit dependencies improve clarity and testability. You do not need a framework to achieve that.Sun, 01 Mar 2026 12:13:00 GMThttps://www.echooff.dev/blog/why-your-unit-tests-feel-fragilehttps://www.echooff.dev/blog/why-your-unit-tests-feel-fragileUnit tests do not feel fragile because testing is hard. They feel fragile because our design mixes business logic and side effects.Sun, 01 Mar 2026 08:58:00 GMThttps://www.echooff.dev/blog/why-i-started-this-bloghttps://www.echooff.dev/blog/why-i-started-this-blogWhy I finally decided to start writing on echooff.dev and what I want this blog to be.Sat, 28 Feb 2026 11:39:00 GMT