feat: tiny event dispatcher

.gitignore

@@ -1,3 +1,5 @@
 node_modules
 dist
 .parcel-cache
+
+*.iml

.npmignore

@@ -0,0 +1,4 @@
+node_modules
+.parcel-cache
+
+*.iml

bin/cloc

@@ -0,0 +1,3 @@
+#!/bin/bash
+git shortlog -sne
+cloc src/

package-lock.json

@@ -1,14 +1,20 @@
 {
-  "name": "typescript-parcel-base",
+  "name": "@pinmenote/tiny-dispatcher",
   "version": "0.0.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "name": "typescript-parcel-base",
+      "name": "@pinmenote/tiny-dispatcher",
       "version": "0.0.1",
+      "license": "MIT",
+      "dependencies": {
+        "nanoid": "^4.0.2"
+      },
       "devDependencies": {
+        "@parcel/packager-ts": "^2.8.3",
         "@parcel/transformer-typescript-tsc": "^2.8.3",
+        "@parcel/transformer-typescript-types": "^2.8.3",
         "@types/node": "^18.11.18",
         "@typescript-eslint/eslint-plugin": "^5.48.2",
         "@typescript-eslint/parser": "^5.48.2",
@@ -1018,6 +1024,23 @@
         "url": "https://opencollective.com/parcel"
       }
     },
+    "node_modules/@parcel/packager-ts": {
+      "version": "2.8.3",
+      "resolved": "https://registry.npmjs.org/@parcel/packager-ts/-/packager-ts-2.8.3.tgz",
+      "integrity": "sha512-8JooYHjKntHnQywLT7LAnfoGiAQ1fUu0N2DtuM0PxpgQqYJ4KE9TZS+SZq7hpe24cZkD0A4A+1kBlYAyvuanrg==",
+      "dev": true,
+      "dependencies": {
+        "@parcel/plugin": "2.8.3"
+      },
+      "engines": {
+        "node": ">= 12.0.0",
+        "parcel": "^2.8.3"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
     "node_modules/@parcel/plugin": {
       "version": "2.8.3",
       "resolved": "https://registry.npmjs.org/@parcel/plugin/-/plugin-2.8.3.tgz",
@@ -1447,6 +1470,31 @@
         "typescript": ">=3.0.0"
       }
     },
+    "node_modules/@parcel/transformer-typescript-types": {
+      "version": "2.8.3",
+      "resolved": "https://registry.npmjs.org/@parcel/transformer-typescript-types/-/transformer-typescript-types-2.8.3.tgz",
+      "integrity": "sha512-zjsJsgecjw4X1nt5R7A61uWwzwCce0usKKPqnE5tQpYtF4FfK5X69r0l5JLovlyaT2uwoe+hvhu2AELA0kKRQA==",
+      "dev": true,
+      "dependencies": {
+        "@parcel/diagnostic": "2.8.3",
+        "@parcel/plugin": "2.8.3",
+        "@parcel/source-map": "^2.1.1",
+        "@parcel/ts-utils": "2.8.3",
+        "@parcel/utils": "2.8.3",
+        "nullthrows": "^1.1.1"
+      },
+      "engines": {
+        "node": ">= 12.0.0",
+        "parcel": "^2.8.3"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      },
+      "peerDependencies": {
+        "typescript": ">=3.0.0"
+      }
+    },
     "node_modules/@parcel/ts-utils": {
       "version": "2.8.3",
       "resolved": "https://registry.npmjs.org/@parcel/ts-utils/-/ts-utils-2.8.3.tgz",
@@ -3387,6 +3435,23 @@
         "@msgpackr-extract/msgpackr-extract-win32-x64": "2.2.0"
       }
     },
+    "node_modules/nanoid": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-4.0.2.tgz",
+      "integrity": "sha512-7ZtY5KTCNheRGfEFxnedV5zFiORN1+Y1N6zvPTnHQd8ENUvfaDBeuJDZb2bN/oXwXxu3qkTXDzy57W5vAmDTBw==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "bin": {
+        "nanoid": "bin/nanoid.js"
+      },
+      "engines": {
+        "node": "^14 || ^16 || >=18"
+      }
+    },
     "node_modules/natural-compare": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/natural-compare/-/natural-compare-1.4.0.tgz",
@@ -5050,6 +5115,15 @@
         "posthtml": "^0.16.4"
       }
     },
+    "@parcel/packager-ts": {
+      "version": "2.8.3",
+      "resolved": "https://registry.npmjs.org/@parcel/packager-ts/-/packager-ts-2.8.3.tgz",
+      "integrity": "sha512-8JooYHjKntHnQywLT7LAnfoGiAQ1fUu0N2DtuM0PxpgQqYJ4KE9TZS+SZq7hpe24cZkD0A4A+1kBlYAyvuanrg==",
+      "dev": true,
+      "requires": {
+        "@parcel/plugin": "2.8.3"
+      }
+    },
     "@parcel/plugin": {
       "version": "2.8.3",
       "resolved": "https://registry.npmjs.org/@parcel/plugin/-/plugin-2.8.3.tgz",
@@ -5312,6 +5386,20 @@
         "@parcel/ts-utils": "2.8.3"
       }
     },
+    "@parcel/transformer-typescript-types": {
+      "version": "2.8.3",
+      "resolved": "https://registry.npmjs.org/@parcel/transformer-typescript-types/-/transformer-typescript-types-2.8.3.tgz",
+      "integrity": "sha512-zjsJsgecjw4X1nt5R7A61uWwzwCce0usKKPqnE5tQpYtF4FfK5X69r0l5JLovlyaT2uwoe+hvhu2AELA0kKRQA==",
+      "dev": true,
+      "requires": {
+        "@parcel/diagnostic": "2.8.3",
+        "@parcel/plugin": "2.8.3",
+        "@parcel/source-map": "^2.1.1",
+        "@parcel/ts-utils": "2.8.3",
+        "@parcel/utils": "2.8.3",
+        "nullthrows": "^1.1.1"
+      }
+    },
     "@parcel/ts-utils": {
       "version": "2.8.3",
       "resolved": "https://registry.npmjs.org/@parcel/ts-utils/-/ts-utils-2.8.3.tgz",
@@ -6624,6 +6712,11 @@
         "node-gyp-build-optional-packages": "5.0.3"
       }
     },
+    "nanoid": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-4.0.2.tgz",
+      "integrity": "sha512-7ZtY5KTCNheRGfEFxnedV5zFiORN1+Y1N6zvPTnHQd8ENUvfaDBeuJDZb2bN/oXwXxu3qkTXDzy57W5vAmDTBw=="
+    },
     "natural-compare": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/natural-compare/-/natural-compare-1.4.0.tgz",

package.json

@@ -1,9 +1,19 @@
 {
-  "name": "typescript-parcel-base",
+  "name": "@pinmenote/tiny-dispatcher",
   "version": "0.0.1",
+  "author": "Michal Szczepanski",
+  "license": "MIT",
+  "description": "tiny event dispatcher",
+  "bugs": {
+    "url": "https://github.com/pinmenote/tiny-dispatcher/issues"
+  },
+  "homepage": "https://github.com/pinmenote/tiny-dispatcher#readme",
+  "source": "src/tiny.dispatcher.ts",
+  "module": "dist/module.js",
+  "types": "dist/types.d.ts",
   "scripts": {
-    "dev": "parcel src/index.html",
+    "build": "parcel build",
-    "prod": "parcel build src/index.html",
+    "dev": "NODE_ENV=development parcel build",
     "lint": "eslint --ext .ts  src/",
     "lint:fix": "eslint --ext .ts,.tsx  src/ --fix"
   },
@@ -11,7 +21,9 @@
     "lint"
   ],
   "devDependencies": {
+    "@parcel/packager-ts": "^2.8.3",
     "@parcel/transformer-typescript-tsc": "^2.8.3",
+    "@parcel/transformer-typescript-types": "^2.8.3",
     "@types/node": "^18.11.18",
     "@typescript-eslint/eslint-plugin": "^5.48.2",
     "@typescript-eslint/parser": "^5.48.2",
@@ -21,5 +33,8 @@
     "parcel": "^2.8.3",
     "pre-commit": "^1.2.2",
     "typescript": "^4.9.4"
+  },
+  "dependencies": {
+    "nanoid": "^4.0.2"
   }
 }

src/tiny.dispatcher.ts

@@ -0,0 +1,53 @@
+import { customAlphabet } from 'nanoid';
+// eslint-disable-next-line @typescript-eslint/no-unsafe-call, @typescript-eslint/no-unsafe-assignment
+const alphabet: (size: number) => string = customAlphabet('abcdefghijklmnopqrstuwxyz0123456789');
+
+const uid = (size = 10): string => {
+  return alphabet(size);
+};
+
+export class TinyDispatcher {
+  private static listeners: { [key: string]: { [key: string]: any } } = {};
+  private static once: { [key: string]: string } = {};
+
+  static addListener<T>(event: string, handler: (event: string, key: string, value: T) => void, once = false): string {
+    if (!this.listeners[event]) {
+      this.listeners[event] = {};
+    }
+    const key = uid();
+    if (once) this.once[key] = event;
+    this.listeners[event][key] = handler;
+    return key;
+  }
+
+  static dispatch<T>(event: string, value?: T): void {
+    if (this.listeners[event]) {
+      for (const key in this.listeners[event]) {
+        this.listeners[event][key](event, key, value); // eslint-disable-line @typescript-eslint/no-unsafe-call
+        if (this.once[key]) {
+          this.removeListener(event, key);
+          delete this.once[key];
+        }
+      }
+    }
+  }
+
+  static removeListener(event: string, key: string): boolean {
+    if (!this.listeners[event]) return false;
+    if (this.listeners[event][key]) {
+      delete this.listeners[event][key];
+      return true;
+    }
+    return false;
+  }
+
+  static removeAllListener(event: string): boolean {
+    if (!this.listeners[event]) return false;
+    delete this.listeners[event];
+    return true;
+  }
+
+  static cleanup() {
+    this.listeners = {};
+  }
+}