chore: add Biome to lint & format code

biome.json

@@ -0,0 +1,88 @@
+{
+  "$schema": "./node_modules/@biomejs/biome/configuration_schema.json",
+  "assist": {
+    "actions": {
+      "source": {
+        "organizeImports": "on"
+      }
+    }
+  },
+  "html": {
+    "formatter": {
+      "enabled": true
+    }
+  },
+  "formatter": {
+    "enabled": true,
+    "indentWidth": 2,
+    "lineEnding": "lf",
+    "formatWithErrors": true,
+    "lineWidth": 140,
+    "indentStyle": "space",
+    "includes": [
+      "**",
+      "!**/.cache",
+      "!**/dist/**",
+      "!**/*.json",
+      "!**/node_modules/**"
+    ]
+  },
+  "javascript": {
+    "parser": {
+      "unsafeParameterDecoratorsEnabled": true
+    },
+    "formatter": {
+      "arrowParentheses": "asNeeded",
+      "quoteProperties": "asNeeded",
+      "semicolons": "always",
+      "indentStyle": "space",
+      "quoteStyle": "single"
+    }
+  },
+  "json": {
+    "formatter": {
+      "indentStyle": "space"
+    },
+    "parser": {
+      "allowComments": true
+    }
+  },
+  "linter": {
+    "enabled": true,
+    "includes": [
+      "**",
+      "!**/.cache",
+      "!**/dist/**",
+      "!**/*.json",
+      "!**/node_modules/**"
+    ],
+    "rules": {
+      "correctness": {
+        "useImportExtensions": "error"
+      },
+      "recommended": true,
+      "complexity": {
+        "noForEach": "off",
+        "noStaticOnlyClass": "off"
+      },
+      "performance": {
+        "noBarrelFile": "off",
+        "noDelete": "off"
+      },
+      "suspicious": {
+        "noExplicitAny": "off",
+        "noPrototypeBuiltins": "off"
+      },
+      "style": {
+        "noNonNullAssertion": "off",
+        "noParameterAssign": "off",
+        "useExponentiationOperator": "off"
+      }
+    }
+  },
+  "vcs": {
+    "clientKind": "git",
+    "enabled": false,
+    "root": "./"
+  }
+}

package.json

@@ -35,7 +35,12 @@
     "url": "https://github.com/ghiscoding/native-copyfiles/issues"
   },
   "scripts": {
+    "prebuild": "npm run biome:lint:write && npm run biome:format:write",
     "build": "tsc --outDir dist",
+    "biome:lint:check": "biome lint ./src",
+    "biome:lint:write": "biome lint --write ./src",
+    "biome:format:check": "biome format ./src",
+    "biome:format:write": "biome format --write ./src",
     "preview:copy": "node dist/cli.js test-copyin test-copyout --flat --verbose",
     "preview:release": "release-it --only-version --dry-run",
     "release": "release-it --only-version",
@@ -48,6 +53,7 @@
     "yargs": "^18.0.0"
   },
   "devDependencies": {
+    "@biomejs/biome": "^2.0.0-beta.6",
     "@release-it/conventional-changelog": "^10.0.1",
     "@types/node": "^22.15.30",
     "@types/yargs": "^17.0.33",
@@ -59,4 +65,4 @@
   "engines": {
     "node": "^20.0.0 || >=22.0.0"
   }
-}
+}

src/__tests__/cli-fail.spec.ts

@@ -2,25 +2,26 @@ import { beforeEach, describe, expect, test, vi } from 'vitest';
 
 describe('copyfiles', () => {
   beforeEach(() => {
-    vi.spyOn(process, 'exit').mockImplementation((() => { }) as any);
+    vi.spyOn(process, 'exit').mockImplementation((() => {}) as any);
   });
 
-  test('CLI entry failure (no valid process.argv)', () => new Promise((done: any) => {
-    const errorSpy = vi.spyOn(global.console, 'error').mockReturnValue();
-    const exitSpy = vi.spyOn(process, 'exit');
+  test('CLI entry failure (no valid process.argv)', () =>
+    new Promise((done: any) => {
+      const errorSpy = vi.spyOn(global.console, 'error').mockReturnValue();
+      const exitSpy = vi.spyOn(process, 'exit');
 
-    import('../cli')
-      .then((cli: any) => {
-        cli();
-      })
-      .catch(e => {
-        expect(errorSpy).toHaveBeenCalledWith(
-          new Error('Please make sure to provide both <inFile> and <outDirectory>, i.e.: "copyfiles <inFile> <outDirectory>"')
-        );
-        expect(exitSpy).toHaveBeenCalledWith(1);
-        process.exitCode = undefined;
-        done();
-        process.exit(0);
-      });
-  }));
-});
+      import('../cli.js')
+        .then((cli: any) => {
+          cli();
+        })
+        .catch(_ => {
+          expect(errorSpy).toHaveBeenCalledWith(
+            new Error('Please make sure to provide both <inFile> and <outDirectory>, i.e.: "copyfiles <inFile> <outDirectory>"'),
+          );
+          expect(exitSpy).toHaveBeenCalledWith(1);
+          process.exitCode = undefined;
+          done();
+          process.exit(0);
+        });
+    }));
+});