diff --git a/.eslintrc.js b/.eslintrc.js
deleted file mode 100644
index 852cab8..0000000
--- a/.eslintrc.js
+++ /dev/null
@@ -1,262 +0,0 @@
-'use strict';
-
-module.exports = {
-  root: true,
-
-  // https://github.com/sindresorhus/globals/blob/master/globals.json
-  env: {
-    es6: true,
-    node: true,
-  },
-
-  rules: {
-    // Possible Errors (http://eslint.org/docs/rules/#possible-errors)
-    'no-await-in-loop': 1,
-    'no-cond-assign': 1,
-    'no-console': 1,
-    'no-constant-condition': [1, {checkLoops: false}],
-    'no-control-regex': 0,
-    'no-debugger': 1,
-    'no-dupe-args': 1,
-    'no-dupe-keys': 1,
-    'no-duplicate-case': 1,
-    'no-empty-character-class': 1,
-    'no-empty': [1, {allowEmptyCatch: true}],
-    'no-ex-assign': 1,
-    'no-extra-boolean-cast': 1,
-    'no-extra-parens': 0,
-    'no-extra-semi': 1,
-    'no-func-assign': 1,
-    'no-inner-declarations': 1,
-    'no-invalid-regexp': 1,
-    'no-irregular-whitespace': 1,
-    'no-obj-calls': 1,
-    'no-prototype-builtins': 0,
-    'no-regex-spaces': 1,
-    'no-sparse-arrays': 1,
-    'no-template-curly-in-string': 0,
-    'no-unexpected-multiline': 1,
-    'no-unreachable': 1,
-    'no-unsafe-finally': 1,
-    'no-unsafe-negation': 1,
-    'use-isnan': 1,
-    'valid-jsdoc': 0,
-    'valid-typeof': 1,
-
-    // Best Practices (http://eslint.org/docs/rules/#best-practices)
-    'accessor-pairs': 1,
-    'array-callback-return': 0,
-    'block-scoped-var': 0,
-    'class-methods-use-this': 0,
-    'complexity': 0,
-    'consistent-return': 0,
-    'curly': 0,
-    'default-case': 0,
-    'dot-location': [1, 'property'],
-    'dot-notation': 1,
-    'eqeqeq': [1, 'allow-null'],
-    'guard-for-in': 0,
-    'no-alert': 1,
-    'no-caller': 1,
-    'no-case-declarations': 0,
-    'no-div-regex': 1,
-    'no-else-return': 0,
-    'no-empty-function': 0,
-    'no-empty-pattern': 1,
-    'no-eq-null': 0,
-    'no-eval': 1,
-    'no-extend-native': 1,
-    'no-extra-bind': 1,
-    'no-extra-label': 1,
-    'no-fallthrough': 1,
-    'no-floating-decimal': 1,
-    'no-global-assign': 1,
-    'no-implicit-coercion': 0,
-    'no-implicit-globals': 0,
-    'no-implied-eval': 1,
-    'no-invalid-this': 0,
-    'no-iterator': 1,
-    'no-labels': 1,
-    'no-lone-blocks': 1,
-    'no-loop-func': 0,
-    'no-magic-numbers': 0,
-    'no-multi-spaces': 1,
-    'no-multi-str': 0,
-    'no-new-func': 1,
-    'no-new-wrappers': 1,
-    'no-new': 1,
-    'no-octal-escape': 1,
-    'no-octal': 1,
-    'no-param-reassign': 0,
-    'no-proto': 1,
-    'no-redeclare': [1, {builtinGlobals: true}],
-    'no-restricted-properties': 0,
-    'no-return-assign': 1,
-    'no-return-await': 1,
-    'no-script-url': 1,
-    'no-self-assign': 1,
-    'no-self-compare': 1,
-    'no-sequences': 1,
-    'no-throw-literal': 1,
-    'no-unmodified-loop-condition': 0,
-    'no-unused-expressions': 0,
-    'no-unused-labels': 1,
-    'no-useless-call': 1,
-    'no-useless-concat': 1,
-    'no-useless-escape': 0,
-    'no-useless-return': 0,
-    'no-void': 1,
-    'no-warning-comments': 0,
-    'no-with': 1,
-    'radix': 1,
-    'require-await': 0,
-    // 'require-await': 1,
-    'vars-on-top': 0,
-    'wrap-iife': [1, 'inside'],
-    'yoda': 1,
-
-    // Strict Mode (http://eslint.org/docs/rules/#strict-mode)
-    'strict': 0,
-
-    // Variables (http://eslint.org/docs/rules/#variables)
-    'init-declarations': 0,
-    'no-catch-shadow': 1,
-    'no-delete-var': 1,
-    'no-label-var': 1,
-    'no-restricted-globals': 0,
-    'no-shadow-restricted-names': 1,
-    'no-shadow': 1,
-    'no-undef-init': 0,
-    'no-undef': 1,
-    'no-undefined': 0,
-    'no-unused-vars': [1, {args: 'none'}],
-    'no-use-before-define': 0,
-
-    // Node.js and CommonJS (http://eslint.org/docs/rules/#nodejs-and-commonjs)
-    'callback-return': 0,
-    'global-require': 0,
-    'handle-callback-err': 1,
-    'no-mixed-requires': 1,
-    'no-new-require': 1,
-    'no-path-concat': 1,
-    'no-process-env': 0,
-    'no-process-exit': 0,
-    'no-restricted-modules': 0,
-    'no-sync': 0,
-
-    // Stylistic Issues (http://eslint.org/docs/rules/#stylistic-issues)
-    'array-bracket-spacing': 1,
-    'block-spacing': 1,
-    'brace-style': [1, '1tbs', {allowSingleLine: true}],
-    'camelcase': 0,
-    'capitalized-comments': 0,
-    'comma-dangle': [1, {arrays: 'always-multiline', objects: 'always-multiline', imports: 'always-multiline', exports: 'always-multiline'}],
-    'comma-spacing': 1,
-    'comma-style': 1,
-    'computed-property-spacing': 1,
-    'consistent-this': 0,
-    'eol-last': 1,
-    'func-call-spacing': 1,
-    'func-name-matching': 0,
-    'func-names': 0,
-    'func-style': 0,
-    'id-blacklist': 0,
-    'id-length': 0,
-    'id-match': 0,
-    'indent': [1, 2, {SwitchCase: 1}],
-    'jsx-quotes': [1, 'prefer-double'],
-    'key-spacing': [1, {beforeColon: false, afterColon: true}],
-    'keyword-spacing': 1,
-    'line-comment-position': 0,
-    'linebreak-style': 1,
-    'lines-around-comment': 0,
-    'lines-around-directive': 0,
-    'max-depth': 0,
-    'max-len': 0,
-    'max-lines': 0,
-    'max-nested-callbacks': 0,
-    'max-params': 0,
-    'max-statements-per-line': 0,
-    'max-statements': 0,
-    'multiline-ternary': 0,
-    'new-cap': 0,
-    'new-parens': 1,
-    'newline-after-var': 0,
-    'newline-before-return': 0,
-    'newline-per-chained-call': 0,
-    'no-array-constructor': 1,
-    'no-bitwise': 0,
-    'no-continue': 0,
-    'no-inline-comments': 0,
-    'no-lonely-if': 0,
-    'no-mixed-operators': 0,
-    'no-mixed-spaces-and-tabs': 1,
-    'no-multiple-empty-lines': [1, {max: 2, maxBOF: 0, maxEOF: 1}],
-    'no-negated-condition': 0,
-    'no-nested-ternary': 0,
-    'no-new-object': 1,
-    'no-plusplus': 0,
-    'no-restricted-syntax': 0,
-    'no-tabs': 1,
-    'no-ternary': 0,
-    'no-trailing-spaces': 1,
-    'no-underscore-dangle': 0,
-    'no-unneeded-ternary': 0,
-    'no-whitespace-before-property': 1,
-    'object-curly-newline': 0,
-    'object-curly-spacing': 1,
-    'object-property-newline': 0,
-    'one-var-declaration-per-line': 0,
-    'one-var': [1, 'never'],
-    'operator-assignment': 1,
-    'operator-linebreak': 0,
-    'padded-blocks': [1, {blocks: 'never', classes: 'never', switches: 'never'}],
-    'quote-props': [1, 'consistent-as-needed'],
-    'quotes': [1, 'single', 'avoid-escape'],
-    'require-jsdoc': 0,
-    'semi-spacing': 1,
-    'semi': 1,
-    'sort-keys': 0,
-    'sort-vars': 0,
-    'space-before-blocks': 1,
-    'space-before-function-paren': [1, {anonymous: 'never', named: 'never', asyncArrow: 'always'}],
-    'space-in-parens': [1, 'never'],
-    'space-infix-ops': 1,
-    'space-unary-ops': 1,
-    'spaced-comment': 0,
-    'unicode-bom': [1, 'never'],
-    'wrap-regex': 0,
-
-    // ECMAScript 6 (http://eslint.org/docs/rules/#ecmascript-6)
-    'arrow-body-style': 0,
-    'arrow-parens': [1, 'as-needed'],
-    'arrow-spacing': 1,
-    'constructor-super': 1,
-    'generator-star-spacing': 1,
-    'no-class-assign': 1,
-    'no-confusing-arrow': [1, {allowParens: true}],
-    'no-const-assign': 1,
-    'no-dupe-class-members': 1,
-    'no-duplicate-imports': 0,
-    'no-new-symbol': 1,
-    'no-restricted-imports': 0,
-    'no-this-before-super': 1,
-    'no-useless-computed-key': 1,
-    'no-useless-constructor': 0,
-    'no-useless-rename': 1,
-    'no-var': 0,
-    'object-shorthand': 0,
-    'prefer-arrow-callback': [1, {allowNamedFunctions: true}],
-    'prefer-const': 1,
-    'prefer-numeric-literals': 0,
-    'prefer-rest-params': 0,
-    'prefer-spread': 1,
-    'prefer-template': 0,
-    'require-yield': 0,
-    'rest-spread-spacing': 1,
-    'sort-imports': 0,
-    'symbol-description': 1,
-    'template-curly-spacing': 1,
-    'yield-star-spacing': 1,
-  },
-};
diff --git a/.eslintrc.json b/.eslintrc.json
new file mode 100644
index 0000000..88a36c3
--- /dev/null
+++ b/.eslintrc.json
@@ -0,0 +1,14 @@
+{
+  "root": true,
+  "parserOptions": {
+    "ecmaVersion": 6
+  },
+  "env": {
+    "es6": true,
+    "node": true
+  },
+  "extends": "eslint:recommended",
+  "rules": {
+    "strict": "warn"
+  }
+}
diff --git a/bench/_measure.js b/bench/_measure.js
index e38d582..7db2b76 100644
--- a/bench/_measure.js
+++ b/bench/_measure.js
@@ -1,4 +1,3 @@
-/* eslint-disable no-console */
 'use strict';
 
 module.exports = (name, withCache, callback) => {
diff --git a/package.json b/package.json
index 5c25538..19ab4e6 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   "dependencies": {},
   "devDependencies": {
     "babel-core": "6.26.3",
-    "eslint": "^3.15.0",
+    "eslint": "^7.12.1",
     "flow-parser": "0.136.0",
     "rimraf": "^2.5.4",
     "rxjs": "6.6.3",
diff --git a/test/slashEscape-test.js b/test/slashEscape-test.js
index 644104a..46a2402 100644
--- a/test/slashEscape-test.js
+++ b/test/slashEscape-test.js
@@ -13,8 +13,7 @@ var escapes = {
 };
 
 tap.test('escape', t => {
-  for (var key in escapes) {
-    if (!escapes.hasOwnProperty(key)) continue;
+  for (const key of Object.keys(escapes)) {
     t.equal(
       slashEscape(key),
       escapes[key]
diff --git a/v8-compile-cache.js b/v8-compile-cache.js
index 69f0536..4376b1b 100644
--- a/v8-compile-cache.js
+++ b/v8-compile-cache.js
@@ -86,8 +86,6 @@ class FileSystemBlobStore {
     try {
       fs.writeFileSync(this._blobFilename, blobToStore);
       fs.writeFileSync(this._mapFilename, mapToStore);
-    } catch (error) {
-      throw error;
     } finally {
       fs.unlinkSync(this._lockFilename);
     }
@@ -301,7 +299,8 @@ function slashEscape(str) {
     '\x00': 'z0',
     'z': 'zZ',
   };
-  return str.replace(/[\\:\/\x00z]/g, match => (ESCAPE_LOOKUP[match]));
+  const ESCAPE_REGEX = /[\\:/\x00z]/g; // eslint-disable-line no-control-regex
+  return str.replace(ESCAPE_REGEX, match => ESCAPE_LOOKUP[match]);
 }
 
 function supportsCachedData() {
@@ -348,7 +347,7 @@ if (!process.env.DISABLE_V8_COMPILE_CACHE && supportsCachedData()) {
   nativeCompileCache.setCacheStore(blobStore);
   nativeCompileCache.install();
 
-  process.once('exit', code => {
+  process.once('exit', () => {
     if (blobStore.isDirty()) {
       blobStore.save();
     }