use rollup to bundle runtime code

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+  "files.associations": {
+    "api-extractor.json": "jsonc"
+  }
+}

lib/runtime/Deferred.ts

@@ -1,47 +1,47 @@
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-namespace emnapi {
-  export interface IDeferrdValue<T = any> {
-    resolve: (value: T) => void
-    reject: (reason?: any) => void
+import { IStoreValue, Store } from './Store'
+import { envStore } from './util'
+
+export interface IDeferrdValue<T = any> {
+  resolve: (value: T) => void
+  reject: (reason?: any) => void
+}
+
+export class Deferred<T = any> implements IStoreValue {
+  public static create<T = any> (env: napi_env, value: IDeferrdValue<T>): Deferred {
+    const deferred = new Deferred<T>(env, value)
+    envStore.get(env)!.deferredStore.add(deferred)
+    return deferred
+  }
+
+  public id: number
+  public env: napi_env
+  public value: IDeferrdValue<T>
+
+  public constructor (env: napi_env, value: IDeferrdValue<T>) {
+    this.id = 0
+    this.env = env
+    this.value = value
   }
 
-  export class Deferred<T = any> implements IStoreValue {
-    public static create<T = any> (env: napi_env, value: IDeferrdValue<T>): Deferred {
-      const deferred = new Deferred<T>(env, value)
-      envStore.get(env)!.deferredStore.add(deferred)
-      return deferred
-    }
-
-    public id: number
-    public env: napi_env
-    public value: IDeferrdValue<T>
-
-    public constructor (env: napi_env, value: IDeferrdValue<T>) {
-      this.id = 0
-      this.env = env
-      this.value = value
-    }
-
-    public resolve (value: T): void {
-      this.value.resolve(value)
-      this.dispose()
-    }
-
-    public reject (reason?: any): void {
-      this.value.reject(reason)
-      this.dispose()
-    }
-
-    public dispose (): void {
-      envStore.get(this.env)!.deferredStore.remove(this.id)
-      this.id = 0
-      this.value = null!
-    }
+  public resolve (value: T): void {
+    this.value.resolve(value)
+    this.dispose()
   }
 
-  export class DeferredStore extends Store<Deferred> {
-    public constructor () {
-      super()
-    }
+  public reject (reason?: any): void {
+    this.value.reject(reason)
+    this.dispose()
+  }
+
+  public dispose (): void {
+    envStore.get(this.env)!.deferredStore.remove(this.id)
+    this.id = 0
+    this.value = null!
+  }
+}
+
+export class DeferredStore extends Store<Deferred> {
+  public constructor () {
+    super()
   }
 }