Restrict size with size-limit

.github/workflows/size-limit.yml

@@ -0,0 +1,15 @@
+name: 'size'
+on:
+  pull_request:
+    branches:
+      - master
+jobs:
+  size:
+    runs-on: ubuntu-latest
+    env:
+      CI_JOB_NUMBER: 1
+    steps:
+      - uses: actions/checkout@v1
+      - uses: andresz1/[email protected]
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}

package.json

@@ -38,7 +38,8 @@
     "prebuild": "rimraf dist && rimraf deno_dist",
     "build": "denoify && rollup -c rollup.config.ts && typedoc --tsconfig tsconfig.json --target es6 src && deno fmt deno_dist/*.ts",
     "start": "rollup -c rollup.config.ts -w",
-    "test": "jest --coverage && npm run test:deno",
+    "size": "size-limit",
+    "test": "jest --coverage && npm run test:deno && npm run size",
     "test:deno": "deno test test/deno/*.spec.ts --unstable --allow-read",
     "test:watch": "jest --coverage --watch",
     "test:prod": "npm run lint && npm run test -- --no-cache",
@@ -49,6 +50,12 @@
     "format": "prettier --write '{src,test}/**/!(*.deno).ts' && deno fmt deno_dist/*.ts",
     "release": "np"
   },
+  "size-limit": [
+    {
+      "path": "dist/browser/eta.min.js",
+      "limit": "3 KB"
+    }
+  ],
   "lint-staged": {
     "{src,test}/**/!(*.deno).ts": [
       "eslint"
@@ -109,6 +116,7 @@
   "devDependencies": {
     "@commitlint/cli": "^9.1.2",
     "@commitlint/config-conventional": "^9.1.2",
+    "@size-limit/preset-small-lib": "^4.5.7",
     "@types/jest": "^26.0.12",
     "@types/node": "^14.6.2",
     "@typescript-eslint/eslint-plugin": "^4.0.1",
@@ -140,6 +148,7 @@
     "rollup-plugin-terser": "^7.0.1",
     "rollup-plugin-typescript2": "^0.27.2",
     "shelljs": "^0.8.4",
+    "size-limit": "^4.5.7",
     "travis-deploy-once": "^5.0.11",
     "ts-jest": "^26.3.0",
     "ts-node": "^9.0.0",