xBuildBuild, type-check, and serve TypeScript projects

xBuild is an esbuild-powered toolchain with variant builds, lifecycle plugins, and oxc-driven compile-time macros.

🧩
Multi-variant builds
Declare several outputs in one file, order them with `dependOn`, and run a subset with `--build`.
🧠
TypeScript tooling
Type-check with `types` and emit bundled or per-file `.d.ts` with `declaration`, both driven by the project tsconfig.
🪝
Lifecycle hooks and plugins
Extend a build with `onSetup`, `onStart`, `onResolve`, `onLoad`, `onEnd`, and `onSuccess`, as one set or as named plugins.
⚡
Compile-time macros
`$$ifdef`, `$$ifndef`, and `$$inline` rewrite the source as span edits over an oxc AST, dropping dead bindings across files.
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Watch, serve, and shortcuts
`--watch` and `--serve` share one interactive terminal with a status bar and single-key rebuild, reload, and verbose toggles.
🎚️
Levelled reporting
One `logLevel` for the run, and `logOverride` to lift, lower, or silence a single esbuild message by id or by pattern.

Multi-variant builds