build: order Host and Client compilation faces

tsdown.config.ts

@@ -1,34 +1,30 @@
 import { defineConfig } from 'tsdown'
 import { typertPlugin } from './packages/typert/generator/lib/types/tsdown-plugin.js'
 
+function isBuildFaceClient(value: unknown): boolean {
+  if (value === undefined || value === 'host') return false
+  if (value === 'client') return true
+  throw new Error(`tsdown: --env.DSH_BUILD_FACE must be host or client, received ${String(value)}`)
+}
+
 /**
- * JS bundling for vendored Cordis and Harness TypeScript packages.
- * TypeScript source is compiled first by `tsc -b` (the root solution); tsdown
- * reads only the emitted JS under lib/types and writes the package root and
- * invariant companion runtime bundles. Declarations are NOT produced here,
- * hence `dts: false`.
- *
- * Per-package shape overrides live in `<package>/tsdown.config.ts`
- * (schemastery: dual ESM+CJS; logger-console: extra browser entry).
+ * The ordinary workspace build consumes JavaScript emitted by the Host
+ * TypeScript project and runs TypeRT. The Client pass selects packages that
+ * declare a browser bundle and lets their package-local configs emit both
+ * their Node loader entry and browser artifact.
  */
-export default defineConfig({
-  // Explicit globs keep bundling to vendored Cordis, the TypeScript package tree, and
-  // the Node CLI assembly. `apps/web` is a Vite application with no lib/types entry;
-  // `workspace: true` or `apps/*` would incorrectly treat it as a package bundle.
-  workspace: ['vendor/*', 'packages/*/*', 'apps/cli'],
-  // The brace glob admits the package companion when present while retaining the
-  // index-only build for vendored Cordis packages outside the Harness package tree.
-  entry: ['lib/types/{index,invariant}.js'],
-  outDir: 'lib',
-  format: ['esm'],
-  platform: 'node',
-  target: 'es2024',
-  // All packages set "type": "module"; fixedExtension false keeps ESM output
-  // at .js (not .mjs), matching the package.json main/exports fields.
-  fixedExtension: false,
-  dts: false,
-  clean: false,
-  // The final pass sees both independent TypeScript faces. Workspace mode
-  // writes only packages that explicitly publish a Typert/Remote subpath.
-  plugins: [typertPlugin({ mode: 'workspace' })],
+export default defineConfig(({ env }) => {
+  const client = isBuildFaceClient(env?.DSH_BUILD_FACE)
+  return {
+    workspace: ['vendor/*', 'packages/*/*', 'apps/cli'],
+    entry: client ? '' : ['lib/types/{index,invariant}.js'],
+    outDir: 'lib',
+    format: ['esm'],
+    platform: 'node',
+    target: 'es2024',
+    fixedExtension: false,
+    dts: false,
+    clean: false,
+    plugins: client ? [] : [typertPlugin({ mode: 'workspace', faces: ['host'] })],
+  }
 })