From bd801756eb62803dd705aebf6deba14d196cce2a Mon Sep 17 00:00:00 2001
From: Patrik Oldsberg <poldsberg@gmail.com>
Date: Thu, 19 Mar 2020 12:08:09 +0100
Subject: [PATCH] cli: support ts jest config and make test setup module
 optional

---
 packages/cli/config/jest.js                      | 12 ++++++++++--
 packages/core/{jest.config.js => jest.config.ts} |  0
 2 files changed, 10 insertions(+), 2 deletions(-)
 rename packages/core/{jest.config.js => jest.config.ts} (100%)

diff --git a/packages/cli/config/jest.js b/packages/cli/config/jest.js
index d849bf307f..e443ceec1b 100644
--- a/packages/cli/config/jest.js
+++ b/packages/cli/config/jest.js
@@ -21,14 +21,22 @@ const path = require('path');
 // manually extend @spotify/web-scripts/config/jest.config.js that is desired
 if (fs.existsSync('jest.config.js')) {
   module.exports = require(path.resolve('jest.config.js'));
+} else if (fs.existsSync('jest.config.ts')) {
+  module.exports = require(path.resolve('jest.config.ts'));
 } else {
+  const extraOptions = {};
+
+  // Use src/setupTests.ts as the default location for configuring test env
+  if (fs.existsSync('src/setupTests.ts')) {
+    extraOptions.setupFilesAfterEnv = ['<rootDir>/setupTests.ts'];
+  }
+
   module.exports = {
     // We base the jest config on web-scripts, it's pretty flat so we skip any complex merging of config objects
     // Config can be found here: https://github.com/spotify/web-scripts/blob/master/packages/web-scripts/config/jest.config.js
     ...require('@spotify/web-scripts/config/jest.config.js'),
 
-    // Use src/setupTests.ts as the default location for configuring test env
-    setupFilesAfterEnv: ['<rootDir>/setupTests.ts'],
+    ...extraOptions,
 
     // If the package has a jest object in package.json we merge that config in. This is the recommended
     // location for configuring tests.
diff --git a/packages/core/jest.config.js b/packages/core/jest.config.ts
similarity index 100%
rename from packages/core/jest.config.js
rename to packages/core/jest.config.ts