From a13a65f1c53db486eb0f5d509a9527be0a3d5656 Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Sun, 11 Dec 2016 03:33:34 -0800
Subject: [PATCH] Clear scrollback in test mode (#1237)
---
packages/react-scripts/scripts/test.js | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/packages/react-scripts/scripts/test.js b/packages/react-scripts/scripts/test.js
index 9de5181d7..13857917e 100644
--- a/packages/react-scripts/scripts/test.js
+++ b/packages/react-scripts/scripts/test.js
@@ -26,6 +26,18 @@ if (!process.env.CI && argv.indexOf('--coverage') < 0) {
argv.push('--watch');
}
+// A temporary hack to clear terminal correctly.
+// You can remove this after updating to Jest 18 when it's out.
+// https://github.com/facebook/jest/pull/2230
+var realWrite = process.stdout.write;
+var CLEAR = process.platform === 'win32' ? '\x1Bc' : '\x1B[2J\x1B[3J\x1B[H';
+process.stdout.write = function(chunk, encoding, callback) {
+ if (chunk === '\x1B[2J\x1B[H') {
+ chunk = CLEAR;
+ }
+ return realWrite.call(this, chunk, encoding, callback);
+};
+
// @remove-on-eject-begin
// This is not necessary after eject because we embed config into package.json.
const createJestConfig = require('../utils/createJestConfig');
--
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