First, esbuild is meant to be a complete JavaScript bundling platform. It already packs a lot of features, and is in the process of acquiring more. What it does

First, esbuild is meant to be a complete JavaScript bundling platform. It already packs a lot of features, and is in the process of acquiring more. What it doesn't pack natively can be bolted on via the plugin system. It's an end-to-end solution, or almost one (it doesn't give you a dist folder you can just deploy, you still need to add an index.html), not "doing one thing and one thing well", unless you define your "one thing" to be very broad. Secondly, here's an analogy: cargo is too much magic, people learning Rust should apply a beginner's mindset by downloading dependency crates themselves and finding the appropriate rustc command lines rather than using cargo build. Sounds unconvincing?