From b4be3fdbebead5a1027200e88d16c8d2e7cf0f1a Mon Sep 17 00:00:00 2001
From: jdalton <john.david.dalton@gmail.com>
Date: Fri, 16 Oct 2026 12:19:25 -0400
Subject: [PATCH] fix(node): support Node 18.20.8 runtime

---
 .github/workflows/ci-gates.yml          | 13 +++++++++++
 package.json                            |  2 +-
 scripts/repo/package-exports.config.mts |  2 +-
 src/process/tree.mts                    |  6 ++++-
 src/strings/width.mts                   | 30 ++++++++++++++++---------
 5 files changed, 39 insertions(+), 14 deletions(-)

diff --git a/.github/workflows/ci-gates.yml b/.github/workflows/ci-gates.yml
index b5ccfc398..1d21a58af 100644
--- a/.github/workflows/ci-gates.yml
+++ b/.github/workflows/ci-gates.yml
@@ -166,6 +166,19 @@ jobs:
           # The diff-aware suite escalates when it cannot resolve a safe scope.
           # Coverage shards verify the complete suite on each pushed commit.
           main-script: pnpm run test --ci
+      - name: Set up Node.js 18.20.8
+        uses: ./.github/actions/fleet/setup
+        with:
+          node-version: '18.20.8'
+      - name: Verify the built width module on Node.js 18.20.8
+        run: >-
+          node -e "const { stringWidth } = require('./dist/strings/width.js');
+          const { findSelfNestedProcesses } = require('./dist/process/tree.js');
+          const rows = [10, 20, 30, 40].map((pid, index) => ({ pid, ppid:
+          index === 0 ? 1 : pid - 10, command: 'wrapper' })); if
+          (stringWidth('👨‍👩‍👧‍👦') !== 2 ||
+          findSelfNestedProcesses(rows, row => row.command).map(row =>
+          row.pid).join(',') !== '40,30') process.exitCode = 1"
 
   cover-shards:
     if: github.event_name != 'pull_request'
diff --git a/package.json b/package.json
index 0c1ca0132..d3890f126 100644
--- a/package.json
+++ b/package.json
@@ -4336,7 +4336,7 @@
     ]
   },
   "engines": {
-    "node": ">=24",
+    "node": ">=18.20.8",
     "npm": ">=12.2.0",
     "pnpm": ">=12.12.0"
   },
diff --git a/scripts/repo/package-exports.config.mts b/scripts/repo/package-exports.config.mts
index 7fe852177..5e8ad9d4c 100644
--- a/scripts/repo/package-exports.config.mts
+++ b/scripts/repo/package-exports.config.mts
@@ -202,7 +202,7 @@ export const config: ExportsConfig = {
     'dist/**/shared-*.js',
     'src/**',
   ],
-  nodeRange: '>=24',
+  nodeRange: '>=18.20.8',
   outDir: 'dist',
   publicNames: {
     './spinner/create': './spinner/spinner',
diff --git a/src/process/tree.mts b/src/process/tree.mts
index 5f1c48e4a..0b2cb49a9 100644
--- a/src/process/tree.mts
+++ b/src/process/tree.mts
@@ -15,6 +15,7 @@
  */
 
 import { getNodeChildProcess } from '../node/child-process.mjs'
+import { arrayToSorted } from '../polyfills/array.mjs'
 
 export interface ProcessTreeRow {
   command: string
@@ -59,7 +60,10 @@ export function findSelfNestedProcesses(
     }
     depthOf.set(pid, hops)
   }
-  return nested.toSorted((a, b) => depthOf.get(b.pid)! - depthOf.get(a.pid)!)
+  return arrayToSorted(
+    nested,
+    (a, b) => depthOf.get(b.pid)! - depthOf.get(a.pid)!,
+  )
 }
 
 /**
diff --git a/src/strings/width.mts b/src/strings/width.mts
index 6ee9b0ecd..a3a8aef10 100644
--- a/src/strings/width.mts
+++ b/src/strings/width.mts
@@ -15,7 +15,7 @@
 
 import { stripAnsi } from '../term/ansi/strip.mjs'
 import { IntlSegmenter } from '../primordials/intl.mjs'
-import { RegExpPrototypeTest } from '../primordials/regexp.mjs'
+import { RegExpCtor, RegExpPrototypeTest } from '../primordials/regexp.mjs'
 import {
   StringPrototypeCharCodeAt,
   StringPrototypeCodePointAt,
@@ -70,21 +70,29 @@ let emojiRegex: RegExp
 
 try {
   // Try 'v' flag first (Node 20+) for most accurate Unicode property support.
-  zeroWidthClusterRegex =
-    /^(?:\p{Control}|\p{Default_Ignorable_Code_Point}|\p{Mark}|\p{Surrogate})+$/v
+  zeroWidthClusterRegex = new RegExpCtor(
+    '^(?:\\p{Control}|\\p{Default_Ignorable_Code_Point}|\\p{Mark}|\\p{Surrogate})+$',
+    'v',
+  )
 
-  leadingNonPrintingRegex =
-    /^[\p{Default_Ignorable_Code_Point}\p{Control}\p{Format}\p{Mark}\p{Surrogate}]+/v
+  leadingNonPrintingRegex = new RegExpCtor(
+    '^[\\p{Default_Ignorable_Code_Point}\\p{Control}\\p{Format}\\p{Mark}\\p{Surrogate}]+',
+    'v',
+  )
 
-  emojiRegex = /^\p{RGI_Emoji}$/v
+  emojiRegex = new RegExpCtor('^\\p{RGI_Emoji}$', 'v')
   /* c8 ignore start */
 } catch {
   // Fall back to 'u' flag (Node 18+) — no \p{Surrogate}, broader emoji.
-  zeroWidthClusterRegex =
-    /^(?:\p{Control}|\p{Default_Ignorable_Code_Point}|\p{Mark})+$/u
-  leadingNonPrintingRegex =
-    /^[\p{Default_Ignorable_Code_Point}\p{Control}\p{Format}\p{Mark}]+/u
-  emojiRegex = /^\p{Extended_Pictographic}$/u
+  zeroWidthClusterRegex = new RegExpCtor(
+    '^(?:\\p{Control}|\\p{Default_Ignorable_Code_Point}|\\p{Mark})+$',
+    'u',
+  )
+  leadingNonPrintingRegex = new RegExpCtor(
+    '^[\\p{Default_Ignorable_Code_Point}\\p{Control}\\p{Format}\\p{Mark}]+',
+    'u',
+  )
+  emojiRegex = new RegExpCtor('^\\p{Extended_Pictographic}$', 'u')
 }
 /* c8 ignore stop */