Merge pull request #233 from FrameMuse/228-replace-eventemitter-with-…

…custom-implementation

Replace `eventemitter` with custom implementation

package.json

@@ -18,7 +18,6 @@
     }
   },
   "dependencies": {
-    "eventemitter3": "^5.0.0",
     "type-fest": "^4.0.0"
   },
   "devDependencies": {

src/EventEmitter.ts

@@ -0,0 +1,39 @@
+/*
+
+MIT License
+
+Copyright (c) 2023 Valery Zinchenko
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+*/
+
+type EventEmitterListener = (...args: never[]) => void
+
+class EventEmitter<Events extends Record<EventName, EventEmitterListener>, EventName extends keyof Events = keyof Events> {
+  private callbacks: Partial<Record<keyof never, Set<EventEmitterListener>>> = {}
+
+  public on<Event extends keyof Events>(event: Event, callback: Events[Event]) {
+    this.callbacks[event] ??= new Set
+    this.callbacks[event]?.add(callback as EventEmitterListener)
+  }
+  public off<Event extends keyof Events>(event: Event, callback: Events[Event]) {
+    this.callbacks[event]?.delete(callback as EventEmitterListener)
+  }
+  public emit<Event extends keyof Events>(event: Event, ...args: Parameters<Events[Event]>) {
+    const callbacks = this.callbacks[event]
+    if (callbacks == null) return
+
+    for (const callback of callbacks) callback(...args)
+  }
+}
+
+export default EventEmitter

src/ModalController.ts

@@ -16,16 +16,15 @@ copies or substantial portions of the Software.
 
 */
 
-import EventEmitter from "eventemitter3"
-
+import EventEmitter from "./EventEmitter"
 import { ModalWindow, ModalWindowAny } from "./ModalWindow"
 import { ExternalStore, MODAL_WINDOW_PARAMS_EXPLANATION, ModalComponent, ModalComponentProps, ModalNamedComponents, ModalParams, ModalSnapshot, ModalWindowParams } from "./types"
 
 
 interface ModalControllerEvents {
-  add: [ModalWindowAny]
-  remove: [ModalWindowAny]
-  update: []
+  add(modalWindow: ModalWindowAny): void
+  remove(modalWindow: ModalWindowAny): void
+  update(): void
 }
 
 interface ModalControllerConfig<Components extends ModalNamedComponents = ModalNamedComponents> {
@@ -86,11 +85,11 @@ class ModalController<Config extends Partial<ModalControllerConfig> = ModalContr
    * @example
    * await Modal.open(MyModal, { id: 1 })
    * console.log("Modal was closed")
-   * 
+   *
    * @example
    * const modal = Modal.open(MyModal, { id: 1 })
    * modal.then(() => console.log("Modal was closed"))
-   * 
+   *
    * @example
    * const modal = Modal.open(MyModal, { id: 1 })
    * modal.on("close", () => console.log("Modal was closed"))
@@ -229,13 +228,13 @@ class ModalController<Config extends Partial<ModalControllerConfig> = ModalContr
 
   /**
    * Subscribes to `event` with `listener`.
-   * 
+   *
    * @example
    * Modal.on("close", () => { })
-   * 
+   *
    * @returns `unsubscribe` method
    */
-  public on<T extends keyof ModalControllerEvents>(event: T, listener: (...args: ModalControllerEvents[T]) => void) {
+  public on<T extends keyof ModalControllerEvents>(event: T, listener: ModalControllerEvents[T]) {
     this.events.on(event, listener)
 
     return () => {
@@ -245,9 +244,9 @@ class ModalController<Config extends Partial<ModalControllerConfig> = ModalContr
 
   /**
    * Used for container component to get the current state.
-   * 
+   *
    * Observes the state and calls the callback on any changes.
-   * 
+   *
    * @returns `unsubscribe` method to stop observing.
    */
   public subscribe(callback: () => void) {

src/ModalWindow.ts

@@ -16,17 +16,16 @@ copies or substantial portions of the Software.
 
 */
 
-import EventEmitter from "eventemitter3"
-
 import Deffered from "./Deffered"
+import EventEmitter from "./EventEmitter"
 import { ModalComponent, ModalParams } from "./types"
 import { cyrb53, serialize } from "./utils"
 
 const MODAL_SEED = Date.now()
 
 interface ModalWindowEvents {
-  open: []
-  close: []
+  open(): void
+  close(): void
 }
 
 const DEFAULT_PARAMS: ModalParams = {
@@ -43,12 +42,12 @@ const DEFAULT_PARAMS: ModalParams = {
 class ModalWindow<CustomParams = unknown> {
   /**
    * Hash of `serialized` property.
-   * 
+   *
    * Unique id of the modal window.
    * If two modals have the same id, they will be treated as the same modal.
-   * 
+   *
    * This is usually used in `key` prop for React components.
-   * 
+   *
    * @note
    * This is not the same as `params.id` because `id` is unique for each modal window.
    */
@@ -62,7 +61,7 @@ class ModalWindow<CustomParams = unknown> {
   public params: ModalParams & CustomParams
   /**
    * Indicates that the `close` method has been called and the modal window is going to be removed.
-   * 
+   *
    * @default
    * false
    */
@@ -88,10 +87,10 @@ class ModalWindow<CustomParams = unknown> {
 
   /**
    * Closes the modal window.
-   * 
+   *
    * @note
    * This is an arrow function, which prevents `this` from being lost - You can use it without `bind`.
-   * 
+   *
    * @example
    * const modal = Modal.open(PopupHello, { title: "Hello" })
    * modal.close()
@@ -108,7 +107,7 @@ class ModalWindow<CustomParams = unknown> {
 
   /**
    * Can be used to wait for the modal to be closed before performing an action.
-   * 
+   *
    * @example
    * await Modal.open(PopupHello, { title: "Hello" })
    * doAnyAction()
@@ -121,12 +120,12 @@ class ModalWindow<CustomParams = unknown> {
    * @example
    * const modal = Modal.open(PopupHello, { title: "Hello" })
    * modal.on("close", () => { })
-   * 
+   *
    * @note If you want to do something on close, you can use await directly on this instance. For details see `then` method in `ModalWindow`.
-   * 
+   *
    * @returns `unsubscribe` method
    */
-  on<K extends keyof ModalWindowEvents>(event: K, listener: (...args: ModalWindowEvents[K]) => void) {
+  on<K extends keyof ModalWindowEvents>(event: K, listener: ModalWindowEvents[K]) {
     this.events.on(event, listener)
 
     return () => {
@@ -137,7 +136,7 @@ class ModalWindow<CustomParams = unknown> {
 
 /**
  * This is a workaround for TypeScript.
- * 
+ *
  * Used if it doesn't matter what type of `CustomParams` is used.
 */
 // eslint-disable-next-line @typescript-eslint/no-explicit-any