feat: make cli config:init respect es modules

kulshekhar · Sep 29, 2023 · 1bccbfa · 1bccbfa
1 parent 9f1439a
commit 1bccbfa
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/src/cli/config/init.ts b/src/cli/config/init.ts
@@ -108,12 +108,14 @@ export const run: CliCommand = async (args: CliCommandArgs /* , logger: Logger *
     body = JSON.stringify({ ...pkgJson, jest: jestConfig }, undefined, '  ')
   } else {
     // js config
+    const usesModules = pkgJson.type === 'module'
+
     const content = []
     if (!jestPreset) {
       content.push(`${preset.jsImport('tsjPreset')};`, '')
     }
     content.push(`/** @type {import('ts-jest').JestConfigWithTsJest} */`)
-    content.push('module.exports = {')
+    content.push(usesModules ? 'const jestConfig = {' : 'module.exports = {')
     if (jestPreset) {
       content.push(`  preset: '${preset.name}',`)
     } else {
@@ -131,6 +133,10 @@ export const run: CliCommand = async (args: CliCommandArgs /* , logger: Logger *
     }
     content.push('};')
 
+    if (usesModules) {
+      content.push('\nexport default jestConfig;')
+    }
+
     // join all together
     body = content.join('\n')
   }