Add ESLint

Ref: https://typescript-eslint.io/getting-started

.eslintrc.json

@@ -0,0 +1,11 @@
+{
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended"
+  ],
+  "parser": "@typescript-eslint/parser",
+  "plugins": [
+    "@typescript-eslint"
+  ],
+  "root": true
+}

.github/workflows/check_code.yml

@@ -10,16 +10,24 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
+      - name: Setup Node
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18
+      - name: Show environment
+        run: set -x; pwd; ls -la; node -v; npm -v;
+      - name: Install dependencies
+        run: npm install
+
+      # TODO: Remove next step
       - name: Setup Deno
         uses: denoland/setup-deno@v1
         with:
           deno-version: v1.x
-      - name: Show environment
-        run: set -x; pwd; ls -la; deno --version;
 
       - name: Test
         run: deno test ./src/
       - name: Check
         run: deno check ./src/test/index.ts
-      - name: Format
-        run: deno fmt ./src/
+      - name: Lint
+        run: npm run lint

.github/workflows/publish_to_npm.yml

@@ -25,7 +25,7 @@ jobs:
         uses: actions/setup-node@v3
       - name: Show environment
         run: set -x; pwd; ls -la; node -v; npm -v;
-      - name: Run npm install
+      - name: Install dependencies
         run: npm install
       - name: Configure git
         run: |

package.json

@@ -35,11 +35,16 @@
   "scripts": {
     "build": "esbuild --bundle --platform=neutral --outfile=./dist/index.js ./src/index.ts",
     "check": "deno check ./src/test/index.ts",
-    "fmt": "deno fmt ./src/",
+    "lint": "eslint ./src/",
+    "lint:fix": "eslint --fix ./src/",
     "prepare": "npm run build",
     "test": "deno test ./src/"
   },
   "devDependencies": {
-    "esbuild": "^0.18.15"
+    "@typescript-eslint/eslint-plugin": "^6.2.1",
+    "@typescript-eslint/parser": "^6.2.1",
+    "esbuild": "^0.18.15",
+    "eslint": "^8.46.0",
+    "typescript": "^5.1.6"
   }
 }

src/hex.test.ts

@@ -40,7 +40,7 @@ Deno.test("Hex", async (t) => {
 
   await t.step("Hex.toBin(Not string)", () => {
     try {
-      Hex.toBin(1234 as any);
+      Hex.toBin(1234 as any); // eslint-disable-line @typescript-eslint/no-explicit-any
       fail("Hex.toBin() is not thrown Error");
     } catch (err) {
       assert(err instanceof Error);
@@ -55,11 +55,11 @@ Deno.test("Hex", async (t) => {
   await t.step("Hex.fromBin(Not Uint8Array)", () => {
     assertEquals(HexText, Hex.fromBin(HexBin));
     try {
-      Hex.fromBin(new Int8Array(4) as any);
+      Hex.fromBin(new Int8Array(4) as any);  // eslint-disable-line @typescript-eslint/no-explicit-any
       fail("Hex.fromBin() is not thrown Error");
     } catch (err) {
       assert(err instanceof Error);
       assertEquals(err.message, '"bin" is not Uint8Array');
     }
-  });
+  })
 });

src/types.d.ts

@@ -12,6 +12,8 @@ export namespace SimpleEncryption {
   type HexString = string;
   type SupportAlgorithm = "AES-GCM" | "AES-CBC";
 
+  // FIXME
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
   interface EncryptArgs {
     alg?: SupportAlgorithm | null;
     iv?: HexString | null;
@@ -25,10 +27,14 @@ export namespace SimpleEncryption {
     iv: HexString;
   }
 
+  // FIXME
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
   interface DecryptArgs extends EncryptedData {
     key: HexString;
   }
 
+  // FIXME
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
   interface DecryptedData {
     plainData: Uint8Array;
   }