chore: enable exactOptionalPropertyTypes flag

packages/core/src/context.ts

@@ -11,7 +11,7 @@ export interface Context {
   [symbols.intercept]: Dict
   /** @experimental */
   root: this
-  baseUrl?: string
+  baseUrl: string | undefined
   events: EventsService
   logger: LoggerService
   reflect: ReflectService

packages/core/src/events.ts

@@ -143,7 +143,7 @@ export class EventsService {
 
   on(name: string | symbol, listener: (...args: any) => any, options?: boolean | EventOptions) {
     if (typeof options !== 'object') {
-      options = { prepend: options }
+      options = options === undefined ? {} : { prepend: options }
     }
 
     // handle special events

packages/core/src/logger.ts

@@ -231,7 +231,7 @@ export class LoggerService {
     name ??= hyphenate(fiber.name)
     return new Logger({
       name,
-      level: config.level,
+      ...(config.level === undefined ? {} : { level: config.level }),
       meta: { fiber: new WeakRef(fiber) },
     }, this)
   }

packages/core/src/reflect.ts

@@ -183,7 +183,12 @@ export class ReflectService {
 
       this.ctx.root[symbols.isolate][name] ??= Symbol(name)
       const key = this.ctx[symbols.isolate][name]
-      const impl: Impl = { name, value, fiber: this.ctx.fiber, check }
+      const impl: Impl = {
+        name,
+        fiber: this.ctx.fiber,
+        ...(value === undefined ? {} : { value }),
+        ...(check === undefined ? {} : { check }),
+      }
       if (this.store[key]) {
         throw new Error(`service "${name}" has been registered at <${this.store[key].fiber.name}>`)
       }

packages/core/src/registry.ts

@@ -187,7 +187,12 @@ export class RegistryService {
   }
 
   inject(inject: Inject, callback: Plugin.Function<void>) {
-    return this.plugin({ inject, apply: callback, name: callback.name })
+    const name = callback.name
+    return this.plugin({
+      inject,
+      apply: callback,
+      ...(name === undefined ? {} : { name }),
+    })
   }
 
   plugin(plugin: Plugin, config?: any, getOuterStack = buildOuterStack()) {
@@ -200,7 +205,13 @@ export class RegistryService {
     if (!runtime) {
       let name = plugin.name
       if (name === 'apply') name = undefined
-      runtime = { name, callback, fibers: new DisposableList(), Config: plugin.Config }
+      const Config = plugin.Config
+      runtime = {
+        callback,
+        fibers: new DisposableList(),
+        ...(name === undefined ? {} : { name }),
+        ...(Config === undefined ? {} : { Config }),
+      }
       this._internal.set(callback, runtime)
     }
 

packages/hmr/src/index.ts

@@ -265,9 +265,10 @@ class Hmr extends Service {
       if (!dependencies.some(dep => this.accepted.has(dep))) continue
       dependencies.forEach(dep => this.accepted.add(dep))
 
+      const runtime = this.ctx.registry.get(plugin)
       reloads.set(plugin, {
         filename: job.url,
-        runtime: this.ctx.registry.get(plugin),
+        ...(runtime === undefined ? {} : { runtime }),
       })
     }
 
@@ -332,8 +333,13 @@ class Hmr extends Service {
       if (!runtime) return
       for (const oldFiber of runtime.fibers) {
         const fiber = oldFiber.parent.registry.plugin(plugin, oldFiber.config, this.getOuterStack)
-        fiber.entry = oldFiber.entry
-        if (fiber.entry) fiber.entry.fiber = fiber
+        const entry = oldFiber.entry
+        if (entry === undefined) {
+          delete fiber.entry
+        } else {
+          fiber.entry = entry
+          entry.fiber = fiber
+        }
       }
     }
 

packages/include/src/index.ts

@@ -205,7 +205,7 @@ export class Include extends EntryTree {
   private writeFile(config: EntryOptions[]) {
     clearTimeout(this.writeTask)
     this.writeTask = setTimeout(() => {
-      this.writeTask = undefined
+      delete this.writeTask
       this._writeFile(config)
     }, 0)
   }

packages/loader/src/config/entry.ts

@@ -147,7 +147,7 @@ export class Entry {
     try {
       await (this._initTask ??= this._init())
     } finally {
-      this._initTask = undefined
+      delete this._initTask
     }
     this.fiber?.await().finally(() => {
       if (this.loader.getTasks().length) return
@@ -163,7 +163,7 @@ export class Entry {
       this.ctx.logger.error(error)
       return
     } finally {
-      this._initTask = undefined
+      delete this._initTask
     }
     const plugin = this.loader.unwrapExports(exports)
     this._patchContext([])

packages/logger-console/tests/index.spec.ts

@@ -26,7 +26,7 @@ describe('logger-console', () => {
 
   it('format error', () => {
     const inner = new Error('message')
-    inner.stack = undefined
+    delete inner.stack
     const outer = new Error('outer')
     ;(outer as any).errors = [inner]
     ctx.logger('test').error(outer)

tsconfig.base.json

@@ -10,6 +10,7 @@
     "skipLibCheck": true,
     "allowImportingTsExtensions": true,
     "strict": true,
+    "exactOptionalPropertyTypes": true,
     "noImplicitAny": false,
     "types": [
       "node",