Update package configuration and TypeScript settings; add build script, versioning, and output directories. Refactor NamedType equality check for conciseness. Change import statements to use 'type' for IDisposable in Disposable and DisposableList classes.

package.json

@@ -1,13 +1,15 @@
 {
   "name": "platform-ts",
   "module": "index.ts",
+  "version": "0.0.1",
   "type": "module",
   "private": true,
   "scripts": {
     "format": "prettier --write .",
     "lint": "eslint --max-warnings 0 ./src",
     "prelint:fix": "bun run format",
-    "lint:fix": "eslint --fix ./src"
+    "lint:fix": "eslint --fix ./src",
+    "build": "tsc"
   },
   "devDependencies": {
     "@eslint/css": "0.13.0",

src/di/DependencyProvider.ts

@@ -0,0 +1,84 @@
+import type IDependencyProvider from './IDependencyProvider';
+import type {Milliseconds} from '../types/Units';
+import type IDependencyManager from './IDependencyManager';
+import {Lifecycle} from './Lifecycle';
+import Type from './Type';
+
+interface IStartable {
+  start(): Promise<void> | void;
+}
+
+const SERVICE_START_TIMEOUT: Milliseconds = 30_000; // 30 seconds
+
+function isStartable(obj: unknown): obj is IStartable {
+  return obj !== null && typeof obj === 'object' && 'start' in obj && typeof (obj as IStartable).start === 'function';
+}
+
+export default class DependencyProvider implements IDependencyProvider {
+  private readonly _dependencyManager: IDependencyManager;
+  private readonly _type: Type;
+  private readonly _instanceType: Type;
+  private readonly _lifecycle: Lifecycle;
+  private _instancePromise?: Promise<unknown>;
+
+  constructor(dependencyManager: IDependencyManager, type: Type, instanceType: Type, lifecycle: Lifecycle) {
+    this._dependencyManager = dependencyManager;
+    this._type = type;
+    this._instanceType = instanceType;
+    this._lifecycle = lifecycle;
+  }
+
+  public canProvide(type: Type): boolean {
+    if (!(type instanceof Type)) {
+      throw new Error('Must provide a valid type');
+    }
+
+    return type.equals(this._type) && this._type.equals(type);
+  }
+
+  public async provide(type: Type): Promise<unknown> {
+    if (!this.canProvide(type)) {
+      throw new Error(`Provider for ${this._type} cannot provide ${type}`);
+    }
+
+    if (this._instancePromise) {
+      return this._instancePromise;
+    }
+
+    const instancePromise = this._createInstance();
+
+    if (this._lifecycle === Lifecycle.Singleton || this._lifecycle === Lifecycle.Service) {
+      this._instancePromise = instancePromise;
+    }
+
+    return instancePromise;
+  }
+
+  private async _createInstance(): Promise<unknown> {
+    const instance = await this._dependencyManager.instantiateType(this._instanceType);
+
+    if (this._lifecycle === Lifecycle.Service) {
+      if (!isStartable(instance)) {
+        throw new Error(`Instance for [${this._type.toString()}] is missing start() method`);
+      }
+
+      await this._startWithTimeout(instance, SERVICE_START_TIMEOUT);
+    }
+
+    return instance;
+  }
+
+  private async _startWithTimeout(instance: IStartable, timeout: number): Promise<void> {
+    const timeoutPromise = new Promise<never>((_, reject) => {
+      setTimeout(() => {
+        reject(new Error(`Timed out starting [${this._instanceType}]`));
+      }, timeout);
+    });
+
+    await Promise.race([instance.start(), timeoutPromise]);
+  }
+
+  public toString(): string {
+    return `DependencyProvider[${this._type}]`;
+  }
+}

src/di/Lifecycle.ts

@@ -0,0 +1,37 @@
+import assertUnreachable from '../lang/assertUnreachable';
+
+export enum Lifecycle {
+  Singleton = 0,
+  Service = 1,
+  Instance = 2
+}
+
+export type LifecycleType = 'signleton' | 'service' | 'instance';
+
+export class LifecycleMapping {
+  public static convertLifecycleToLifecycleType(lifecycle: Lifecycle): LifecycleType {
+    switch (lifecycle) {
+      case Lifecycle.Singleton:
+        return 'signleton';
+      case Lifecycle.Service:
+        return 'service';
+      case Lifecycle.Instance:
+        return 'instance';
+      default:
+        return assertUnreachable(lifecycle);
+    }
+  }
+
+  public static convertLifecycleTypeToLifecycle(lifecycleType: LifecycleType): Lifecycle {
+    switch (lifecycleType) {
+      case 'signleton':
+        return Lifecycle.Singleton;
+      case 'service':
+        return Lifecycle.Service;
+      case 'instance':
+        return Lifecycle.Instance;
+      default:
+        return assertUnreachable(lifecycleType);
+    }
+  }
+}

src/di/NamedType.ts

@@ -12,8 +12,8 @@ export default class NamedType extends Type {
     return this._name;
   }
 
-  public override equals(other: Type) {
-    return super.equals(other) && other instanceof Type && this.getName() === (other as NamedType).getName();
+  public override equals(other: Type): boolean {
+    return super.equals(other) && other instanceof NamedType && this.getName() === other.getName();
   }
 
   public overridetoURN(): string {

src/lang/Disposable.ts

@@ -1,4 +1,4 @@
-import IDisposable from './IDisposable';
+import type IDisposable from './IDisposable';
 
 export default class Disposable implements IDisposable {
   private readonly _cleanup: () => void;

src/lang/DisposableList.ts

@@ -1,4 +1,4 @@
-import IDisposable from './IDisposable';
+import type IDisposable from './IDisposable';
 
 export default class DisposableList implements IDisposable {
   private readonly _list: IDisposable[];
@@ -15,7 +15,7 @@ export default class DisposableList implements IDisposable {
     while (this._list.length) {
       const disposable = this._list.shift();
 
-      disposable.dispose();
+      disposable!.dispose();
     }
   }
 }

src/lang/assertUnreachable.ts

@@ -0,0 +1,3 @@
+export default function assertUnreachable(x: never): never {
+  throw new Error(`Unreachable code: [${x}]`);
+}

src/types/Units.ts

@@ -0,0 +1,12 @@
+export type Seconds = number;
+export type Milliseconds = number;
+export type Microseconds = number;
+export type Nanoseconds = number;
+
+export type Bytes = number;
+export type Kilobytes = number;
+export type Megabytes = number;
+export type Gigabytes = number;
+export type Terabytes = number;
+export type Petabytes = number;
+export type Exabytes = number;

tsconfig.json

@@ -7,12 +7,18 @@
     "moduleDetection": "force",
     "jsx": "react-jsx",
     "allowJs": true,
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "sourceMap": true,
+    "declaration": true,
+    "declarationMap": true,
+    "declarationDir": "./dist/types",
 
     // Bundler mode
     "moduleResolution": "bundler",
-    "allowImportingTsExtensions": true,
+    "allowImportingTsExtensions": false,
     "verbatimModuleSyntax": true,
-    "noEmit": true,
+    "noEmit": false,
 
     // Best practices
     "strict": true,
@@ -25,5 +31,7 @@
     "noUnusedLocals": false,
     "noUnusedParameters": false,
     "noPropertyAccessFromIndexSignature": false
-  }
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules/**/*", "test/**/*"]
 }