Remove support for node v14, v16 and v18

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                node: [14, 16, 18, 20]
+                node: [20, 21]
         name: Node ${{ matrix.node }}
         steps:
             - uses: actions/checkout@v2

benchmarks/measure.js

@@ -3,20 +3,9 @@
 const os = require('os');
 const { performance: performanceHooks } = require('perf_hooks');
 const { times, median, map, prop } = require('rambda');
-const semver = require('semver');
 
 const [ { speed: cpuSpeed } ] = os.cpus();
 
-function getNodeVersionMultiplier() {
-    const currentNodeVersion = process.version;
-
-    if (semver.lt(currentNodeVersion, '14.0.0')) {
-        return 1.5;
-    }
-
-    return 1;
-}
-
 function clearRequireCache() {
     Object.keys(require.cache).forEach(function (key) {
         delete require.cache[key];
@@ -47,6 +36,5 @@ function runBenchmark(fn, count) {
 module.exports = {
     runBenchmark,
     clearRequireCache,
-    cpuSpeed,
-    getNodeVersionMultiplier
+    cpuSpeed
 };

benchmarks/runtime.bench.js

@@ -5,8 +5,7 @@ const { Linter } = require('eslint');
 const { times, toPairs, fromPairs } = require('rambda');
 const {
     runBenchmark,
-    cpuSpeed,
-    getNodeVersionMultiplier
+    cpuSpeed
 } = require('./measure');
 const mochaPlugin = require('../');
 
@@ -89,8 +88,7 @@ function lintManyFilesWithAllRecommendedRules({ numberOfFiles }) {
 
 describe('runtime', () => {
     it('should not take longer as the defined budget to lint many files with the recommended config', () => {
-        const nodeVersionMultiplier = getNodeVersionMultiplier();
-        const budget = 3750000 / cpuSpeed * nodeVersionMultiplier;
+        const budget = 3750000 / cpuSpeed;
 
         const { medianDuration } = runBenchmark(() => {
             lintManyFilesWithAllRecommendedRules({ numberOfFiles: 350 });

package.json

@@ -3,7 +3,7 @@
     "version": "10.3.0",
     "description": "Eslint rules for mocha.",
     "engines": {
-        "node": ">=14.0.0"
+        "node": ">=20.0.0"
     },
     "main": "index.js",
     "files": [