Добавил eslint, prettier

.eslintrc.js

@@ -0,0 +1,29 @@
+module.exports = {
+    env: {
+        browser: true,
+        node: true,
+        es6: true
+    },
+    extends: ['eslint:recommended', 'plugin:prettier/recommended'],
+    parserOptions: {
+        'sourceType': 'commonjs',
+        "ecmaVersion": 'latest'
+    },
+    rules: {
+        indent: 'off',
+        semi: ['error', 'always'],
+        'arrow-body-style': ["error", "as-needed"],
+        "prettier/prettier": [
+          "error", {
+              "singleQuote": true,
+              "parser": "flow"
+          }
+          ],
+    },
+    overrides: [
+        {
+            'files': ['*/*.js'],
+        },
+    ],
+    'ignorePatterns': ['.eslintrc.js'],
+};

.gitignore

@@ -1,5 +1,6 @@
 .idea
 CertSSL/
 charts/
+node_modules/
 
 config.yaml

package.json

@@ -0,0 +1,27 @@
+{
+  "name": "kekkai",
+  "version": "1.0.0",
+  "description": "Historical data on the rate of fiat and crypto currencies",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Redume/Kekkai.git"
+  },
+  "author": "Redume",
+  "license": "GPL-3.0-or-later",
+  "bugs": {
+    "url": "https://github.com/Redume/Kekkai/issues"
+  },
+  "homepage": "https://github.com/Redume/Kekkai#readme",
+  "devDependencies": {
+    "@eslint/js": "^8.57.0",
+    "eslint": "^8.57.0",
+    "eslint-config-prettier": "^9.1.0",
+    "eslint-plugin-prettier": "^5.2.1",
+    "globals": "^15.9.0",
+    "prettier": "3.3.3"
+  }
+}