Software engineer and educator; creator of Testing Library and of the EpicWeb.dev and EpicReact.dev courses.
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Their words
Their wordsWrite tests. Not too many. Mostly integration.
Their wordsThe more your tests resemble the way your software is used, the more confidence they can give you.
Their wordsDid you know, the tests you write with react-testing-library look almost identical to the tests you write with vue-testing-library. Magic things happen when you don't test implementation details. :)
Their wordsAgents are going to eat the entire software development lifecycle
Their wordsI strongly believe that any codebase can be turned on autopilot eventually and for a codebase that's earning money and needs to be maintained, the cost is more than worth the improved velocity.
Their wordsBut they won't ask for an app, they'll just ask for a problem to be solved and the agent will write the code under the hood to solve it.
Their wordsKeep finding ways to climb that abstraction ladder! Your agent wants your job! Give it!
Their wordsSaaS is in major trouble and you absolutely should have a meeting tomorrow about what you're going to do about this shift.
Their wordsYou ➡️ agent ➡️ software This is the path to efficient processes and too many of you stop on the first two steps costing money and time.
Their wordsYou should look for ways to turn what your agent does into deterministic software.
Their wordsif your customers are interacting with your service through an agent, it's so much more efficient to just give them a regular mcp server they can use.
Their wordsThe reason you don't build enough personal software is because setting up the integrations every time is a pain.
Mental modelCheaper means more, not less
Their wordsWhen it becomes so easy to generate a custom app for something specific, more people will do it.
Their wordsAI agents make redesigns cheap. The reason I could go through three rounds of "build, ship, regret, redesign" in a matter of days is that the agent did most of the implementation work.
Mental modelLock-in and switching costs
Their words
Their wordsGrok Bot OpenAI Dot Meta Muse Claude Duet ... They're each building their own powerful and beautiful walled gardens.
Their wordsEach one of these products (and the others inevitably on their way) are going to do their best to make theirs the winner. But the fact is that they will continue to leap frog each other in capabilities.
Their wordsI don't yet have numbers to back this up, but I gotta believe that someone connecting their agent to Kody in one agent and then switching their main driver to another somewhere else is suboptimal.
Their wordsAgents are really good at output now, and they're getting better fast. What they're not good at is knowing which output is worth producing in the first place.
Their wordsA new feature is a new product. @erinfoox writes the list and asks why before she builds.
Their wordsthe things that really move the needle is whether how I think about the evolution of my product and its features
Their wordsIf you're lamenting writing code by hand like something you love is being taken away from you, see if you can fall in love with solving problems instead. Maybe you'll find out that's what you really loved the whole time