feat: add standalone TSRX runtime packages

[aleclarson]

The default remains compiler-owned imports so existing applications need no dependency changes, while library publishers can opt into runtimeImports: direct and depend only on the core-free shared runtime plus the matching renderer runtime.

• Review whether helper ownership and renderer peer dependencies match the intended package boundaries.
• Confirm import selection stays isolated to each compilation and preserves existing compiler-package imports by default.
• Check that Vite, Rspack, Bun, and React Turbopack propagate the option through CSS, loader, and dependency-scan paths.
• Focused tests cover compatibility subpaths, emitted imports, runtime behavior, types, plugin forwarding, and package boundaries.

Closes #1300.

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Note

Medium Risk
Wide surface area across compile output and all bundler plugins, but default behavior is unchanged and coverage targets import paths and package boundaries.

Overview
Introduces @tsrx/runtime (shared ref/iterable/language helpers) and per-renderer @tsrx/*-runtime packages, moving implementations out of @tsrx/core while compiler packages re-export them for backward compatibility.

Compilers gain runtimeImports: 'compiler' | 'direct' (default unchanged). In direct mode, emitted helper imports target the small runtime packages instead of @tsrx/react/ref-style compiler subpaths—intended for published libraries that should not depend on the compiler at runtime.

The same option is threaded through Vite, Rspack, Bun, and React Turbopack plugins (including CSS re-compile and dep-scan paths). Tests and package-boundary checks verify emitted imports and that runtime packages stay free of @tsrx/core.

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Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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Solid Vite scan skips runtime option

Medium Severity

The Solid Vite plugin builds compile_options with runtimeImports and uses it in load, but the dep-scan plugin still passes the bare compile function. With runtimeImports: 'direct', optimizeDeps scanning emits compiler-package helper imports instead of @tsrx/solid-runtime, so the runtime package can be missed until request time.

 

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