diff --git a/.eslintrc.json b/.eslintrc.json
deleted file mode 100644
index 4eb503c3..00000000
--- a/.eslintrc.json
+++ /dev/null
@@ -1,29 +0,0 @@
-{
-  "env": {
-    "node": true,
-    "es2022": true,
-    "mocha": true
-  },
-  "extends": [
-    "eslint:recommended",
-    "prettier"
-  ],
-  "plugins": [
-    "prettier",
-    "mocha"
-  ],
-  "parserOptions": {
-    "sourceType": "module"
-  },
-  "rules": {
-    "prettier/prettier": [
-      "error"
-    ],
-    "mocha/no-skipped-tests": [
-      "error"
-    ],
-    "mocha/no-exclusive-tests": [
-      "error"
-    ]
-  }
-}
\ No newline at end of file
diff --git a/eslint.config.cjs b/eslint.config.cjs
new file mode 100644
index 00000000..7ce4ef19
--- /dev/null
+++ b/eslint.config.cjs
@@ -0,0 +1,31 @@
+const globals = require("globals");
+const js = require("@eslint/js");
+const prettierConfig = require("eslint-config-prettier");
+const prettierPlugin = require("eslint-plugin-prettier");
+const mochaPlugin = require("eslint-plugin-mocha");
+
+module.exports = [
+  js.configs.recommended,
+  mochaPlugin.configs.flat.recommended,
+  prettierConfig,
+  {
+    plugins: {
+      mocha: mochaPlugin,
+      prettier: prettierPlugin,
+    },
+    languageOptions: {
+      ecmaVersion: 2022,
+      sourceType: "module",
+      globals: {
+        mocha: true,
+        ...globals.node,
+      },
+    },
+    rules: {
+      "prettier/prettier": ["error"],
+      "mocha/no-skipped-tests": ["error"],
+      "mocha/no-exclusive-tests": ["error"],
+      "mocha/max-top-level-suites": ["off"],
+    },
+  },
+];
diff --git a/package-lock.json b/package-lock.json
index ab36e008..277c3da5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,7 +30,7 @@
       },
       "devDependencies": {
         "c8": "^9.1.0",
-        "eslint": "^8.0.1",
+        "eslint": "^9.2.0",
         "eslint-config-prettier": "^9.0.0",
         "eslint-plugin-mocha": "^10.0.3",
         "eslint-plugin-prettier": "^5.0.0",
@@ -188,15 +188,15 @@
       }
     },
     "node_modules/@eslint/eslintrc": {
-      "version": "2.1.4",
-      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-2.1.4.tgz",
-      "integrity": "sha512-269Z39MS6wVJtsoUl10L60WdkhJVdPG24Q4eZTH3nnF6lpvSShEK3wQjDX9JRWAUPvPh7COouPpU9IrqaZFvtQ==",
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-3.0.2.tgz",
+      "integrity": "sha512-wV19ZEGEMAC1eHgrS7UQPqsdEiCIbTKTasEfcXAigzoXICcqZSjBZEHlZwNVvKg6UBCjSlos84XiLqsRJnIcIg==",
       "dev": true,
       "dependencies": {
         "ajv": "^6.12.4",
         "debug": "^4.3.2",
-        "espree": "^9.6.0",
-        "globals": "^13.19.0",
+        "espree": "^10.0.1",
+        "globals": "^14.0.0",
         "ignore": "^5.2.0",
         "import-fresh": "^3.2.1",
         "js-yaml": "^4.1.0",
@@ -204,7 +204,7 @@
         "strip-json-comments": "^3.1.1"
       },
       "engines": {
-        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
       "funding": {
         "url": "https://opencollective.com/eslint"
@@ -236,6 +236,18 @@
         "concat-map": "0.0.1"
       }
     },
+    "node_modules/@eslint/eslintrc/node_modules/globals": {
+      "version": "14.0.0",
+      "resolved": "https://registry.npmjs.org/globals/-/globals-14.0.0.tgz",
+      "integrity": "sha512-oahGvuMGQlPw/ivIYBjVSrWAfWLBeku5tpPE2fOPLi+WHffIWbuh2tCjhyQhTBPMf5E9jDEH4FOmTYgYwbKwtQ==",
+      "dev": true,
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/@eslint/eslintrc/node_modules/json-schema-traverse": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
@@ -255,22 +267,22 @@
       }
     },
     "node_modules/@eslint/js": {
-      "version": "8.56.0",
-      "resolved": "https://registry.npmjs.org/@eslint/js/-/js-8.56.0.tgz",
-      "integrity": "sha512-gMsVel9D7f2HLkBma9VbtzZRehRogVRfbr++f06nL2vnCGCNlzOD+/MUov/F4p8myyAHspEhVobgjpX64q5m6A==",
+      "version": "9.2.0",
+      "resolved": "https://registry.npmjs.org/@eslint/js/-/js-9.2.0.tgz",
+      "integrity": "sha512-ESiIudvhoYni+MdsI8oD7skpprZ89qKocwRM2KEvhhBJ9nl5MRh7BXU5GTod7Mdygq+AUl+QzId6iWJKR/wABA==",
       "dev": true,
       "engines": {
-        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       }
     },
     "node_modules/@humanwhocodes/config-array": {
-      "version": "0.11.13",
-      "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.11.13.tgz",
-      "integrity": "sha512-JSBDMiDKSzQVngfRjOdFXgFfklaXI4K9nLF49Auh21lmBWRLIK3+xTErTWD4KU54pb6coM6ESE7Awz/FNU3zgQ==",
+      "version": "0.13.0",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.13.0.tgz",
+      "integrity": "sha512-DZLEEqFWQFiyK6h5YIeynKx7JlvCYWL0cImfSRXZ9l4Sg2efkFGTuFf6vzXjK1cq6IYkU+Eg/JizXw+TD2vRNw==",
       "dev": true,
       "dependencies": {
-        "@humanwhocodes/object-schema": "^2.0.1",
-        "debug": "^4.1.1",
+        "@humanwhocodes/object-schema": "^2.0.3",
+        "debug": "^4.3.1",
         "minimatch": "^3.0.5"
       },
       "engines": {
@@ -313,11 +325,24 @@
       }
     },
     "node_modules/@humanwhocodes/object-schema": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/@humanwhocodes/object-schema/-/object-schema-2.0.1.tgz",
-      "integrity": "sha512-dvuCeX5fC9dXgJn9t+X5atfmgQAzUOWqS1254Gh0m6i8wKd10ebXkfNKiRK+1GWi/yTvvLDHpoxLr0xxxeslWw==",
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/object-schema/-/object-schema-2.0.3.tgz",
+      "integrity": "sha512-93zYdMES/c1D69yZiKDBj0V24vqNzB/koF26KPaagAfd3P/4gUlh3Dys5ogAK+Exi9QyzlD8x/08Zt7wIKcDcA==",
       "dev": true
     },
+    "node_modules/@humanwhocodes/retry": {
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/retry/-/retry-0.2.4.tgz",
+      "integrity": "sha512-Ttl/jHpxfS3st5sxwICYfk4pOH0WrLI1SpW283GgQL7sCWU7EHIOhX4b4fkIxr3tkfzwg8+FNojtzsIEE7Ecgg==",
+      "dev": true,
+      "engines": {
+        "node": ">=18.18"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/nzakas"
+      }
+    },
     "node_modules/@isaacs/cliui": {
       "version": "8.0.2",
       "resolved": "https://registry.npmjs.org/@isaacs/cliui/-/cliui-8.0.2.tgz",
@@ -538,16 +563,10 @@
       "integrity": "sha512-z/QT1XN4K4KYuslS23k62yDIDLwLFkzxOuMplDtObz0+y7VqJCaO2o+SPwHCvLFZh7xazvvoor2tA/hPz9ee7g==",
       "dev": true
     },
-    "node_modules/@ungap/structured-clone": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/@ungap/structured-clone/-/structured-clone-1.2.0.tgz",
-      "integrity": "sha512-zuVdFrMJiuCDQUMCzQaD6KL28MjnqqN8XnAqiEq9PNm/hCPTSGfrXCOfwj1ow4LFb/tNymJPwsNbVePc1xFqrQ==",
-      "dev": true
-    },
     "node_modules/acorn": {
-      "version": "8.11.2",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.11.2.tgz",
-      "integrity": "sha512-nc0Axzp/0FILLEVsm4fNwLCwMttvhEI263QtVPQcbpfZZ3ts0hLsZGOpE6czNlid7CJ9MlyH8reXkpsf3YUY4w==",
+      "version": "8.11.3",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.11.3.tgz",
+      "integrity": "sha512-Y9rRfJG5jcKOE0CLisYbojUjIrIEE7AGMzA/Sm4BslANhbS+cDMpgBdcPT91oJ7OuJ9hYJBx59RjbhxVnrF8Xg==",
       "dev": true,
       "bin": {
         "acorn": "bin/acorn"
@@ -1051,18 +1070,6 @@
         "node": ">=0.3.1"
       }
     },
-    "node_modules/doctrine": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
-      "integrity": "sha512-yS+Q5i3hBf7GBkd4KG8a7eBNNWNGLTaEwwYWUijIYM7zrlYDM0BFXHjjPWlWZ1Rg7UaddZeIDmi9jF3HmqiQ2w==",
-      "dev": true,
-      "dependencies": {
-        "esutils": "^2.0.2"
-      },
-      "engines": {
-        "node": ">=6.0.0"
-      }
-    },
     "node_modules/eastasianwidth": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/eastasianwidth/-/eastasianwidth-0.2.0.tgz",
@@ -1110,41 +1117,37 @@
       }
     },
     "node_modules/eslint": {
-      "version": "8.56.0",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-8.56.0.tgz",
-      "integrity": "sha512-Go19xM6T9puCOWntie1/P997aXxFsOi37JIHRWI514Hc6ZnaHGKY9xFhrU65RT6CcBEzZoGG1e6Nq+DT04ZtZQ==",
+      "version": "9.2.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-9.2.0.tgz",
+      "integrity": "sha512-0n/I88vZpCOzO+PQpt0lbsqmn9AsnsJAQseIqhZFI8ibQT0U1AkEKRxA3EVMos0BoHSXDQvCXY25TUjB5tr8Og==",
       "dev": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.2.0",
         "@eslint-community/regexpp": "^4.6.1",
-        "@eslint/eslintrc": "^2.1.4",
-        "@eslint/js": "8.56.0",
-        "@humanwhocodes/config-array": "^0.11.13",
+        "@eslint/eslintrc": "^3.0.2",
+        "@eslint/js": "9.2.0",
+        "@humanwhocodes/config-array": "^0.13.0",
         "@humanwhocodes/module-importer": "^1.0.1",
+        "@humanwhocodes/retry": "^0.2.3",
         "@nodelib/fs.walk": "^1.2.8",
-        "@ungap/structured-clone": "^1.2.0",
         "ajv": "^6.12.4",
         "chalk": "^4.0.0",
         "cross-spawn": "^7.0.2",
         "debug": "^4.3.2",
-        "doctrine": "^3.0.0",
         "escape-string-regexp": "^4.0.0",
-        "eslint-scope": "^7.2.2",
-        "eslint-visitor-keys": "^3.4.3",
-        "espree": "^9.6.1",
+        "eslint-scope": "^8.0.1",
+        "eslint-visitor-keys": "^4.0.0",
+        "espree": "^10.0.1",
         "esquery": "^1.4.2",
         "esutils": "^2.0.2",
         "fast-deep-equal": "^3.1.3",
-        "file-entry-cache": "^6.0.1",
+        "file-entry-cache": "^8.0.0",
         "find-up": "^5.0.0",
         "glob-parent": "^6.0.2",
-        "globals": "^13.19.0",
-        "graphemer": "^1.4.0",
         "ignore": "^5.2.0",
         "imurmurhash": "^0.1.4",
         "is-glob": "^4.0.0",
         "is-path-inside": "^3.0.3",
-        "js-yaml": "^4.1.0",
         "json-stable-stringify-without-jsonify": "^1.0.1",
         "levn": "^0.4.1",
         "lodash.merge": "^4.6.2",
@@ -1158,7 +1161,7 @@
         "eslint": "bin/eslint.js"
       },
       "engines": {
-        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
       "funding": {
         "url": "https://opencollective.com/eslint"
@@ -1224,16 +1227,16 @@
       }
     },
     "node_modules/eslint-scope": {
-      "version": "7.2.2",
-      "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-7.2.2.tgz",
-      "integrity": "sha512-dOt21O7lTMhDM+X9mB4GX+DZrZtCUJPL/wlcTqxyrx5IvO0IYtILdtrQGQp+8n5S0gwSVmOf9NQrjMOgfQZlIg==",
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-8.0.1.tgz",
+      "integrity": "sha512-pL8XjgP4ZOmmwfFE8mEhSxA7ZY4C+LWyqjQ3o4yWkkmD0qcMT9kkW3zWHOczhWcjTSgqycYAgwSlXvZltv65og==",
       "dev": true,
       "dependencies": {
         "esrecurse": "^4.3.0",
         "estraverse": "^5.2.0"
       },
       "engines": {
-        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
       "funding": {
         "url": "https://opencollective.com/eslint"
@@ -1309,12 +1312,12 @@
       }
     },
     "node_modules/eslint/node_modules/eslint-visitor-keys": {
-      "version": "3.4.3",
-      "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-3.4.3.tgz",
-      "integrity": "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-4.0.0.tgz",
+      "integrity": "sha512-OtIRv/2GyiF6o/d8K7MYKKbXrOUBIK6SfkIRM4Z0dY3w+LiQ0vy3F57m0Z71bjbyeiWFiHJ8brqnmE6H6/jEuw==",
       "dev": true,
       "engines": {
-        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
       "funding": {
         "url": "https://opencollective.com/eslint"
@@ -1351,29 +1354,29 @@
       }
     },
     "node_modules/espree": {
-      "version": "9.6.1",
-      "resolved": "https://registry.npmjs.org/espree/-/espree-9.6.1.tgz",
-      "integrity": "sha512-oruZaFkjorTpF32kDSI5/75ViwGeZginGGy2NoOSg3Q9bnwlnmDm4HLnkl0RE3n+njDXR037aY1+x58Z/zFdwQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/espree/-/espree-10.0.1.tgz",
+      "integrity": "sha512-MWkrWZbJsL2UwnjxTX3gG8FneachS/Mwg7tdGXce011sJd5b0JG54vat5KHnfSBODZ3Wvzd2WnjxyzsRoVv+ww==",
       "dev": true,
       "dependencies": {
-        "acorn": "^8.9.0",
+        "acorn": "^8.11.3",
         "acorn-jsx": "^5.3.2",
-        "eslint-visitor-keys": "^3.4.1"
+        "eslint-visitor-keys": "^4.0.0"
       },
       "engines": {
-        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
       "funding": {
         "url": "https://opencollective.com/eslint"
       }
     },
     "node_modules/espree/node_modules/eslint-visitor-keys": {
-      "version": "3.4.3",
-      "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-3.4.3.tgz",
-      "integrity": "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-4.0.0.tgz",
+      "integrity": "sha512-OtIRv/2GyiF6o/d8K7MYKKbXrOUBIK6SfkIRM4Z0dY3w+LiQ0vy3F57m0Z71bjbyeiWFiHJ8brqnmE6H6/jEuw==",
       "dev": true,
       "engines": {
-        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       },
       "funding": {
         "url": "https://opencollective.com/eslint"
@@ -1493,86 +1496,15 @@
       }
     },
     "node_modules/file-entry-cache": {
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-6.0.1.tgz",
-      "integrity": "sha512-7Gps/XWymbLk2QLYK4NzpMOrYjMhdIxXuIvy2QBsLE6ljuodKvdkWs/cpyJJ3CVIVpH0Oi1Hvg1ovbMzLdFBBg==",
-      "dev": true,
-      "dependencies": {
-        "flat-cache": "^3.0.4"
-      },
-      "engines": {
-        "node": "^10.12.0 || >=12.0.0"
-      }
-    },
-    "node_modules/file-entry-cache/node_modules/brace-expansion": {
-      "version": "1.1.11",
-      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
-      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
-      "dev": true,
-      "dependencies": {
-        "balanced-match": "^1.0.0",
-        "concat-map": "0.0.1"
-      }
-    },
-    "node_modules/file-entry-cache/node_modules/flat-cache": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/flat-cache/-/flat-cache-3.2.0.tgz",
-      "integrity": "sha512-CYcENa+FtcUKLmhhqyctpclsq7QF38pKjZHsGNiSQF5r4FtoKDWabFDl3hzaEQMvT1LHEysw5twgLvpYYb4vbw==",
-      "dev": true,
-      "dependencies": {
-        "flatted": "^3.2.9",
-        "keyv": "^4.5.3",
-        "rimraf": "^3.0.2"
-      },
-      "engines": {
-        "node": "^10.12.0 || >=12.0.0"
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-    "node_modules/file-entry-cache/node_modules/glob": {
-      "version": "7.2.3",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
-      "integrity": "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q==",
-      "dev": true,
-      "dependencies": {
-        "fs.realpath": "^1.0.0",
-        "inflight": "^1.0.4",
-        "inherits": "2",
-        "minimatch": "^3.1.1",
-        "once": "^1.3.0",
-        "path-is-absolute": "^1.0.0"
-      },
-      "engines": {
-        "node": "*"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
-    "node_modules/file-entry-cache/node_modules/minimatch": {
-      "version": "3.1.2",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
-      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-8.0.0.tgz",
+      "integrity": "sha512-XXTUwCvisa5oacNGRP9SfNtYBNAMi+RPwBFmblZEF7N7swHYQS6/Zfk7SRwx4D5j3CH211YNRco1DEMNVfZCnQ==",
       "dev": true,
       "dependencies": {
-        "brace-expansion": "^1.1.7"
+        "flat-cache": "^4.0.0"
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@@ -4784,12 +4648,6 @@
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diff --git a/package.json b/package.json
index dd91ead6..a057c883 100644
--- a/package.json
+++ b/package.json
@@ -4,10 +4,10 @@
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     "test": "V8R_CACHE_NAME=v8r-test c8 --reporter=text mocha \"src/**/*.spec.js\"",
-    "lint": "eslint \"src/**/*.js\"",
+    "lint": "eslint \"**/*.{js,cjs}\"",
     "coverage": "c8 report --reporter=cobertura",
-    "prettier": "prettier --write \"**/*.js\"",
-    "prettier:check": "prettier --check \"**/*.js\"",
+    "prettier": "prettier --write \"**/*.{js,cjs}\"",
+    "prettier:check": "prettier --check \"**/*.{js,cjs}\"",
     "v8r": "src/index.js"
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@@ -46,7 +46,7 @@
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     "eslint-plugin-mocha": "^10.0.3",
     "eslint-plugin-prettier": "^5.0.0",
diff --git a/src/ajv.spec.js b/src/ajv.spec.js
index 171d5b5f..f23bd2ed 100644
--- a/src/ajv.spec.js
+++ b/src/ajv.spec.js
@@ -6,9 +6,19 @@ import { testCacheName, setUp, tearDown } from "./test-helpers.js";
 
 describe("_ajvFactory", function () {
   describe("schema drafts compatibility", function () {
-    const testCache = new Cache(flatCache.load(testCacheName), 3000);
-    beforeEach(() => setUp());
-    afterEach(() => tearDown());
+    let testCache;
+
+    before(function () {
+      testCache = new Cache(flatCache.load(testCacheName), 3000);
+    });
+
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
+      tearDown();
+    });
 
     it("should support draft-04", function () {
       const ajv = _ajvFactory(
diff --git a/src/cache.spec.js b/src/cache.spec.js
index f60b122e..68c833f9 100644
--- a/src/cache.spec.js
+++ b/src/cache.spec.js
@@ -6,9 +6,19 @@ import { testCacheName, setUp, tearDown } from "./test-helpers.js";
 
 describe("Cache", function () {
   describe("fetch function", function () {
-    const testCache = new Cache(flatCache.load(testCacheName), 3000);
-    beforeEach(() => setUp());
-    afterEach(() => tearDown());
+    let testCache;
+
+    before(function () {
+      testCache = new Cache(flatCache.load(testCacheName), 3000);
+    });
+
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
+      tearDown();
+    });
 
     it("should use cached response if valid", async function () {
       nock("https://www.foobar.com").get("/baz").reply(200, { cached: false });
@@ -38,9 +48,19 @@ describe("Cache", function () {
   });
 
   describe("cyclic detection", function () {
-    const testCache = new Cache(flatCache.load(testCacheName), 3000);
-    beforeEach(() => setUp());
-    afterEach(() => tearDown());
+    let testCache;
+
+    before(function () {
+      testCache = new Cache(flatCache.load(testCacheName), 3000);
+    });
+
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
+      tearDown();
+    });
 
     it("throws if callLimit is exceeded", async function () {
       const mock = nock("https://www.foobar.com")
@@ -63,9 +83,19 @@ describe("Cache", function () {
   });
 
   describe("expire function", function () {
-    const testCache = new Cache(flatCache.load(testCacheName), 3000);
-    beforeEach(() => setUp());
-    afterEach(() => tearDown());
+    let testCache;
+
+    before(function () {
+      testCache = new Cache(flatCache.load(testCacheName), 3000);
+    });
+
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
+      tearDown();
+    });
 
     it("should delete expired and malformed cache objects", async function () {
       const now = Date.now();
diff --git a/src/catalogs.spec.js b/src/catalogs.spec.js
index 238ce825..d0860869 100644
--- a/src/catalogs.spec.js
+++ b/src/catalogs.spec.js
@@ -118,9 +118,20 @@ describe("getMatchForFilename", function () {
       },
     },
   ];
-  const testCache = new Cache(flatCache.load(testCacheName), 3000);
-  beforeEach(() => setUp());
-  afterEach(() => tearDown());
+
+  let testCache;
+
+  before(function () {
+    testCache = new Cache(flatCache.load(testCacheName), 3000);
+  });
+
+  beforeEach(function () {
+    setUp();
+  });
+
+  afterEach(function () {
+    tearDown();
+  });
 
   it("returns a schema when one match found", async function () {
     assert.deepStrictEqual(
diff --git a/src/cli.spec.js b/src/cli.spec.js
index 87c917c0..afb7616c 100644
--- a/src/cli.spec.js
+++ b/src/cli.spec.js
@@ -18,7 +18,7 @@ import { dump as dumpToYaml } from "js-yaml";
 
 describe("CLI", function () {
   // Mock the catalog validation schema
-  beforeEach(() => {
+  beforeEach(function () {
     nock.disableNetConnect();
     nock("https://json.schemastore.org")
       .persist()
@@ -52,8 +52,11 @@ describe("CLI", function () {
       properties: { num: { type: "number" } },
     };
 
-    beforeEach(() => setUp());
-    afterEach(() => {
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
       tearDown();
       nock.cleanAll();
     });
@@ -460,10 +463,18 @@ describe("CLI", function () {
       type: "object",
       properties: { num: { type: "number" } },
     };
-    const yamlSchema = dumpToYaml(schema);
 
-    beforeEach(() => setUp());
-    afterEach(() => {
+    let yamlSchema;
+
+    before(function () {
+      yamlSchema = dumpToYaml(schema);
+    });
+
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
       tearDown();
       nock.cleanAll();
     });
@@ -570,8 +581,13 @@ describe("CLI", function () {
   });
 
   describe("error handling, single file", function () {
-    beforeEach(() => setUp());
-    afterEach(() => tearDown());
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
+      tearDown();
+    });
 
     it("should return 1 if invalid response from schemastore", async function () {
       const mock = nock("https://www.schemastore.org")
@@ -880,8 +896,13 @@ describe("CLI", function () {
   });
 
   describe("multiple file processing", function () {
-    beforeEach(() => setUp());
-    afterEach(() => tearDown());
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
+      tearDown();
+    });
 
     it("should return 0 if all files are valid", async function () {
       return cli({
@@ -951,8 +972,13 @@ describe("CLI", function () {
   });
 
   describe("output formats", function () {
-    beforeEach(() => setUp());
-    afterEach(() => tearDown());
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
+      tearDown();
+    });
 
     it("should log errors in text format when format is text", async function () {
       return cli({
@@ -1019,8 +1045,11 @@ describe("CLI", function () {
   });
 
   describe("external reference resolver", function () {
-    beforeEach(() => setUp());
-    afterEach(() => {
+    beforeEach(function () {
+      setUp();
+    });
+
+    afterEach(function () {
       tearDown();
       nock.cleanAll();
     });
diff --git a/src/config.spec.js b/src/config.spec.js
index 0c7f3767..ea4adbd6 100644
--- a/src/config.spec.js
+++ b/src/config.spec.js
@@ -175,8 +175,11 @@ describe("preProcessConfig", function () {
 });
 
 describe("getConfig", function () {
-  beforeEach(() => setUp());
-  afterEach(() => {
+  beforeEach(function () {
+    setUp();
+  });
+
+  afterEach(function () {
     tearDown();
   });
 
@@ -273,8 +276,11 @@ describe("getConfig", function () {
 describe("validateConfig", function () {
   const messages = {};
 
-  beforeEach(() => setUp(messages));
-  afterEach(() => {
+  beforeEach(function () {
+    setUp(messages);
+  });
+
+  afterEach(function () {
     tearDown();
   });