Setup size limit

.github/workflows/size-limit.yml

@@ -0,0 +1,24 @@
+name: Check bundle size
+on:
+  pull_request:
+    branches:
+      - main
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  pull-requests: write
+
+jobs:
+  sizecheck:
+    runs-on: ubuntu-latest
+    env:
+      CI_RUN: true
+      CI_JOB_NUMBER: 1
+    steps:
+      - uses: actions/checkout@v4
+      - uses: andresz1/size-limit-action
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          package_manager: pnpm

.size-limit.ts

@@ -0,0 +1,22 @@
+import type { SizeLimitConfig } from "size-limit";
+
+module.exports = [
+  {
+    name: "createTypedChannel",
+    path: "dist/index.js",
+    import: "{ createTypedChannel }",
+    limit: "254 B",
+  },
+  {
+    name: "createPostMessageTransport",
+    path: "dist/index.js",
+    import: "{ createPostMessageTransport }",
+    limit: "86 B",
+  },
+  {
+    name: "createEventTargetTransport",
+    path: "dist/index.js",
+    import: "{ createEventTargetTransport }",
+    limit: "109 B",
+  },
+] satisfies SizeLimitConfig;

README.md

@@ -3,6 +3,7 @@
 A type-safe communication channel for sending and receiving messages between different contexts in a TypeScript environment.
 
 [![npm version](https://img.shields.io/npm/v/typed-channel.svg)](https://www.npmjs.com/package/typed-channel)
+[![Bundle size](https://img.shields.io/badge/Bundle_size-from_363_B-brightgreen)](https://github.com/psd-coder/typed-channel/blob/main/.size-limit.ts)
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)
 
 ## Features

package.json

@@ -31,6 +31,7 @@
     "lint": "pnpm --parallel /^lint:*/",
     "lint:oxlint": "oxlint",
     "lint:prettier": "prettier --check .",
+    "lint:size": "pnpm build && size-limit",
     "format": "prettier . --write",
     "typecheck": "tsc --noEmit",
     "test": "vitest run",
@@ -39,8 +40,10 @@
   },
   "packageManager": "pnpm@10.8.1",
   "devDependencies": {
+    "@size-limit/preset-small-lib": "^11.2.0",
     "oxlint": "^0.16.6",
     "prettier": "^3.5.3",
+    "size-limit": "^11.2.0",
     "tsup": "^8.4.0",
     "typescript": "^5.8.3",
     "vite": "^6.3.1",