From 164af898c43d71840e46d6c5530aae898337ef0e Mon Sep 17 00:00:00 2001
From: Lauren Tan <poteto@users.noreply.github.com>
Date: Mon, 29 Jul 2024 12:55:38 -0400
Subject: [PATCH] [ci] Remove jestSequencer

This was previously used for circleci parallelization but is no longer
needed.

ghstack-source-id: d8c1005e0955310b0ae10111459e0b51d4176b69
Pull Request resolved: https://github.com/facebook/react/pull/30500
---
 scripts/jest/config.base.js   |  2 --
 scripts/jest/jestSequencer.js | 19 -------------------
 2 files changed, 21 deletions(-)
 delete mode 100644 scripts/jest/jestSequencer.js

diff --git a/scripts/jest/config.base.js b/scripts/jest/config.base.js
index a887e66b7dd3c..263010a87b451 100644
--- a/scripts/jest/config.base.js
+++ b/scripts/jest/config.base.js
@@ -24,8 +24,6 @@ module.exports = {
   },
   snapshotSerializers: [require.resolve('jest-snapshot-serializer-raw')],
 
-  testSequencer: require.resolve('./jestSequencer'),
-
   testEnvironment: 'jsdom',
 
   testRunner: 'jest-circus/runner',
diff --git a/scripts/jest/jestSequencer.js b/scripts/jest/jestSequencer.js
deleted file mode 100644
index b21cbbfc0ccbc..0000000000000
--- a/scripts/jest/jestSequencer.js
+++ /dev/null
@@ -1,19 +0,0 @@
-'use strict';
-
-const Sequencer = require('@jest/test-sequencer').default;
-
-class CustomSequencer extends Sequencer {
-  sort(tests) {
-    if (process.env.CIRCLE_NODE_TOTAL) {
-      // In CI, parallelize tests across multiple tasks.
-      const nodeTotal = parseInt(process.env.CIRCLE_NODE_TOTAL, 10);
-      const nodeIndex = parseInt(process.env.CIRCLE_NODE_INDEX, 10);
-      tests = tests
-        .sort((a, b) => (a.path < b.path ? -1 : 1))
-        .filter((_, i) => i % nodeTotal === nodeIndex);
-    }
-    return tests;
-  }
-}
-
-module.exports = CustomSequencer;