diff --git a/.dockerignore b/.dockerignore
index aed7eae467..4914fe6fc8 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -6,6 +6,7 @@
 .vscode
 .prettierrc
 .prettierignore
+.eslintrc.cjs
 
 node_modules/
 worker/
@@ -16,3 +17,4 @@ log/
 *.md
 LICENSE
 wrangler.toml
+package-lock.json
diff --git a/.eslintrc.cjs b/.eslintrc.cjs
new file mode 100644
index 0000000000..0f95ec7e72
--- /dev/null
+++ b/.eslintrc.cjs
@@ -0,0 +1,39 @@
+module.exports = {
+  env: {
+    // Which globals variables are allowed.
+    es2021: true,
+    node: true,
+    worker: true,
+  },
+
+  extends: [
+    // See: https://github.com/google/eslint-config-google
+    "google",
+  ],
+
+  parserOptions: {
+    ecmaVersion: 13,
+    sourceType: "module",
+  },
+
+  plugins: ["prettier"],
+  rules: {
+    // Rules disabled to avoid conflicts with prettier
+    // See: https://github.com/prettier/eslint-config-prettier
+    "indent": 0,
+    "object-curly-spacing": 0,
+    "operator-linebreak": 0,
+    "space-before-function-paren": 0,
+
+    // Our rules overrides.
+    "comma-dangle": 0,
+    "require-jsdoc": 0,
+    "quotes": ["error", "double", { allowTemplateLiterals: true }],
+    "no-unused-vars": "warn",
+
+    // Enforces rules from .prettierrc file.
+    // These should be fixed automatically with formatting.
+    // See: https://github.com/prettier/eslint-plugin-prettier
+    "prettier/prettier": "warn",
+  },
+};
diff --git a/.prettierrc b/.prettierrc
deleted file mode 100644
index c30a0d1e5a..0000000000
--- a/.prettierrc
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-    "tabWidth": 2,
-    "printWidth": 80,
-    "trailingComma": "es5",
-    "semi": true
-}
diff --git a/.prettierrc.json b/.prettierrc.json
new file mode 100644
index 0000000000..b1062dcf72
--- /dev/null
+++ b/.prettierrc.json
@@ -0,0 +1,8 @@
+{
+  "printWidth": 80,
+  "tabWidth": 2,
+  "semi": true,
+  "singleQuote": false,
+  "quoteProps": "consistent",
+  "trailingComma": "es5"
+}
diff --git a/package.json b/package.json
index 4da836cbb8..474595791f 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,9 @@
   },
   "devDependencies": {
     "@types/node": "^16.11.7",
+    "eslint": "^8.5.0",
+    "eslint-config-google": "^0.14.0",
+    "eslint-plugin-prettier": "^4.0.0",
     "webpack": "^5.65.0"
   }
 }
diff --git a/src/helpers/env.js b/src/helpers/env.js
index ea1e2c8060..04eceb0543 100644
--- a/src/helpers/env.js
+++ b/src/helpers/env.js
@@ -34,13 +34,13 @@ const _RUNTIME_ENV_MAPPINGS = {
     all: "CF_ON_INVALID_FLAG_STOPPROCESSING",
   },
 
-  //parallel request wait timeout for download blocklist from s3
+  // parallel request wait timeout for download blocklist from s3
   fetchTimeout: {
     type: "number",
     all: "CF_BLOCKLIST_DOWNLOAD_TIMEOUT",
   },
 
-  //env variables for td file split
+  // env variables for td file split
   tdNodecount: {
     type: "number",
     all: "TD_NODE_COUNT",
@@ -50,9 +50,9 @@ const _RUNTIME_ENV_MAPPINGS = {
     all: "TD_PARTS",
   },
 
-  //set to on - off aggressive cache plugin
-  //as of now Cache-api is available only on worker
-  //so _getRuntimeEnv will set this to false for other runtime.
+  // set to on - off aggressive cache plugin
+  // as of now Cache-api is available only on worker
+  // so _getRuntimeEnv will set this to false for other runtime.
   isAggCacheReq: {
     type: "boolean",
     worker: "IS_AGGRESSIVE_CACHE_REQ",
@@ -62,7 +62,7 @@ const _RUNTIME_ENV_MAPPINGS = {
 /**
  * Get runtime specific environment variables.
  * @param {String} runtime - Runtime name (deno, node, worker).
- * @returns {Object} Runtime environment variables.
+ * @return {Object} Runtime environment variables.
  */
 function _getRuntimeEnv(runtime) {
   console.info("Loading env. from runtime:", runtime);
@@ -123,7 +123,8 @@ export default class EnvManager {
       this.envMap.set(key, value);
     }
 
-    //adding download timeout with worker time to determine worker's overall timeout
+    // adding download timeout with worker time to determine worker's overall
+    // timeout
     runtime == "worker" &&
       this.envMap.set(
         "workerTimeout",
@@ -141,14 +142,14 @@ export default class EnvManager {
   }
 
   /**
-   * @returns {Map} - Map of env variables.
+   * @return {Map} - Map of env variables.
    */
   getMap() {
     return this.envMap;
   }
 
   /**
-   * @returns {Object} - Object of currently loaded env variables.
+   * @return {Object} - Object of currently loaded env variables.
    */
   toObject() {
     return Object.fromEntries(this.envMap);
@@ -156,7 +157,7 @@ export default class EnvManager {
 
   /**
    * @param {String} key - env variable name
-   * @returns {*} - env variable value
+   * @return {*} - env variable value
    */
   get(key) {
     return this.envMap.get(key);
diff --git a/src/helpers/envutil.js b/src/helpers/envutil.js
index b79b7278dc..c4a3c9880b 100644
--- a/src/helpers/envutil.js
+++ b/src/helpers/envutil.js
@@ -7,14 +7,14 @@
  */
 
 export function isWorkers() {
-  return env && env.runTime === "worker"
+  return env && env.runTime === "worker";
 }
 
 export function isNode() {
-  return env && env.runTime === "node"
+  return env && env.runTime === "node";
 }
 
 export function workersTimeout(defaultValue = 0) {
-  if (envManager) return envManager.get("workerTimeout") || defaultValue
-  return defaultValue
+  if (envManager) return envManager.get("workerTimeout") || defaultValue;
+  return defaultValue;
 }
diff --git a/src/helpers/log.js b/src/helpers/log.js
index 2154d6c13f..06153bd87d 100644
--- a/src/helpers/log.js
+++ b/src/helpers/log.js
@@ -98,7 +98,8 @@ export default class Log {
       _LOG_LEVELS.get(level) < _LOG_LEVELS.get(console.level)
     ) {
       throw new Error(
-        `Cannot set (log.level='${level}') < (console.level = '${console.level}')`
+        "Cannot set " +
+          `(log.level='${level}') < (console.level = '${console.level}')`
       );
     }
 
diff --git a/src/helpers/node/util.js b/src/helpers/node/util.js
index 250a1d7bde..e4de198c8a 100644
--- a/src/helpers/node/util.js
+++ b/src/helpers/node/util.js
@@ -2,7 +2,7 @@
  * @param {String} TLS_CRT_KEY - Contains base64 (no wrap) encoded key and
  * certificate files seprated by a newline (\n) and described by `KEY=` and
  * `CRT=` respectively. Ex: `TLS_="KEY=encoded_string\nCRT=encoded_string"`
- * @returns [TLS_KEY, TLS_CRT]
+ * @return {Array<Buffer>} [TLS_KEY, TLS_CRT]
  */
 export function getTLSfromEnv(TLS_CRT_KEY) {
   if (TLS_CRT_KEY == undefined) throw new Error("TLS cert / key not found");
@@ -22,7 +22,7 @@ export function getTLSfromEnv(TLS_CRT_KEY) {
 
 /**
  * @param {Object} headers
- * @returns
+ * @return {Object}
  */
 export function copyNonPseudoHeaders(headers) {
   const resH = {};
@@ -38,7 +38,7 @@ export function copyNonPseudoHeaders(headers) {
 
 /**
  * @param {Object} headers
- * @returns
+ * @return {Object}
  */
 export function transformPseudoHeaders(headers) {
   const resH = {};