feat: ship class and test

battleship/.eslintrc.js

@@ -0,0 +1,21 @@
+module.exports = {
+    env: {
+        browser: true,
+        es2021: true,
+        node: true,
+    },
+    extends: ['eslint:recommended', 'prettierd'],
+    parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+    },
+    overrides: [
+        {
+            files: ['tests/**/*'],
+            plugins: ['jest'],
+            env: {
+                'jest/globals': true,
+            },
+        },
+    ],
+};