1 files changed, 9 insertions, 8 deletions

diff --git a/config/jest.config.base.js b/config/jest.config.base.js
index 87d5b31..bc34295 100644
--- a/config/jest.config.base.js
+++ b/config/jest.config.base.js
@@ -4,18 +4,19 @@ import { fileURLToDirname } from './utils.js';
 
 const thisDir = fileURLToDirname(import.meta.url);
 
-/** @type {import('ts-jest').InitialOptionsTsJest} */
+/** @type {import('@jest/types').Config.InitialOptions} */
 export default {
-  preset: 'ts-jest/presets/default-esm',
-  globals: {
-    'ts-jest': {
-      useESM: true,
-    },
+  transform: {
+    '\\.tsx?$': join(thisDir, 'jestEsbuildTransform.js'),
   },
+  extensionsToTreatAsEsm: [
+    '.ts',
+    '.tsx',
+  ],
   moduleNameMapper: {
     '@sophie/(.+)': join(thisDir, '../packages/$1/src/index.ts'),
-    '^(\\.{1,2}/.*)\\.js$': '$1',
-    // Workaround for typescript to recognize the vendored dependencies of chalk.
+    '^(\\.{1,2}/.*)\\.jsx?$': '$1',
+    // Workaround for jest to recognize the vendored dependencies of chalk.
     '#ansi-styles': join(thisDir, '../node_modules/chalk/source/vendor/ansi-styles/index.js'),
     '#supports-color': join(thisDir, '../node_modules/chalk/source/vendor/supports-color/index.js'),
   },