fix(typert): satisfy workspace static gates

scripts/dev-web.ts

@@ -47,21 +47,40 @@ export function discoverPluginDirs(root = repoRoot): string[] {
  * @param root - repository or fixture root passed to tsdown.
  * @param pluginDirs - workspace-relative package directories to watch.
  * @param pollInterval - optional source-watcher polling interval in milliseconds.
- * @returns live bundles whose async disposers stop every watcher.
+ * @returns live bundles after every watcher has completed its initial build.
  */
 export async function watchClientPlugins(
   root: string,
   pluginDirs: readonly string[],
   pollInterval?: number,
 ): Promise<TsdownBundle[]> {
-  return build({
+  let resolveInitialBuilds: (() => void) | undefined
+  const initialBuilds = new Promise<void>((resolve) => { resolveInitialBuilds = resolve })
+  const initialized = new WeakSet<object>()
+  const readiness: { expectedBuilds?: number; initializedBuilds: number } = { initializedBuilds: 0 }
+  const bundles = await build({
     cwd: root,
     workspace: [...pluginDirs],
     watch: true,
+    hooks: {
+      'build:done': ({ options }) => {
+        if (initialized.has(options)) return
+        initialized.add(options)
+        readiness.initializedBuilds += 1
+        if (
+          readiness.expectedBuilds !== undefined
+          && readiness.initializedBuilds >= readiness.expectedBuilds
+        ) resolveInitialBuilds?.()
+      },
+    },
     ...pollInterval !== undefined
       ? { inputOptions: { watch: { watcher: { usePolling: true, pollInterval } } } }
       : {},
   })
+  readiness.expectedBuilds = bundles.length
+  if (readiness.initializedBuilds >= readiness.expectedBuilds) resolveInitialBuilds?.()
+  await initialBuilds
+  return bundles
 }
 
 const invokedPath = process.argv[1]