1 files changed, 25 insertions, 0 deletions
diff --git a/packages/opencode/src/util/local-context.ts b/packages/opencode/src/util/local-context.ts
new file mode 100644
index 000000000..26f88ab09
--- /dev/null
+++ b/packages/opencode/src/util/local-context.ts
@@ -0,0 +1,25 @@
+import { AsyncLocalStorage } from "async_hooks"
+
+export namespace LocalContext {
+  export class NotFound extends Error {
+    constructor(public override readonly name: string) {
+      super(`No context found for ${name}`)
+    }
+  }
+
+  export function create<T>(name: string) {
+    const storage = new AsyncLocalStorage<T>()
+    return {
+      use() {
+        const result = storage.getStore()
+        if (!result) {
+          throw new NotFound(name)
+        }
+        return result
+      },
+      provide<R>(value: T, fn: () => R) {
+        return storage.run(value, fn)
+      },
+    }
+  }
+}