Fix: revert "chore: drop support for Nodejs 20 (#412)"

This reverts commit 94c3904.

Author: keithamus

.github/workflows/pr.yml

@@ -12,9 +12,9 @@ jobs:
           # - 'macos-latest'
           # - 'windows-latest'
         node_version:
-          - '25'
           - '24'
           - '22'
+          - '20'
     name: Node.js ${{ matrix.node_version }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     steps:

eslint.config.js

@@ -13,7 +13,7 @@ export default [
     languageOptions: {
       globals: { ...globals.builtin, ...globals.node },
     },
-    settings: { node: { version: '22' } },
+    settings: { node: { version: '20' } },
   },
   { ignores: ['index.cjs'] },
 ]

index.js

@@ -34,6 +34,22 @@ const sortObjectBy = (comparator, deep) => {
 
   return over
 }
+const objectGroupBy =
+  // eslint-disable-next-line n/no-unsupported-features/es-builtins, n/no-unsupported-features/es-syntax -- Safe
+  Object.groupBy ||
+  // Remove this when we drop support for Node.js 20
+  ((array, callback) => {
+    const result = Object.create(null)
+    for (const value of array) {
+      const key = callback(value)
+      if (result[key]) {
+        result[key].push(value)
+      } else {
+        result[key] = [value]
+      }
+    }
+    return result
+  })
 const sortObject = sortObjectBy()
 const sortURLObject = sortObjectBy(['type', 'url'])
 const sortPeopleObject = sortObjectBy(['name', 'email', 'url'])
@@ -414,7 +430,7 @@ const sortScripts = onObject((scripts, packageJson) => {
 - Move `default` condition to bottom
 */
 const sortConditions = (conditions) => {
-  const { defaultConditions = [], restConditions = [] } = Object.groupBy(
+  const { defaultConditions = [], restConditions = [] } = objectGroupBy(
     conditions,
     (condition) => {
       if (condition === 'default') {
@@ -429,7 +445,7 @@ const sortConditions = (conditions) => {
 }
 
 const sortExports = onObject((exports) => {
-  const { paths = [], conditions = [] } = Object.groupBy(
+  const { paths = [], conditions = [] } = objectGroupBy(
     Object.keys(exports),
     (key) => (key.startsWith('.') ? 'paths' : 'conditions'),
   )
@@ -619,7 +635,7 @@ function sortPackageJson(jsonIsh, options = {}) {
 
       if (Array.isArray(sortOrder)) {
         const keys = Object.keys(json)
-        const { privateKeys = [], publicKeys = [] } = Object.groupBy(
+        const { privateKeys = [], publicKeys = [] } = objectGroupBy(
           keys,
           (key) => (key[0] === '_' ? 'privateKeys' : 'publicKeys'),
         )

package-lock.json

@@ -103,6 +103,6 @@
     "tstyche": "^5.0.1"
   },
   "engines": {
-    "node": ">=22"
+    "node": ">=20"
   }
 }