feat: support transpiled transformers

jestjs · Mar 14, 2021 · 2411699 · 2411699
1 parent dd13096
commit 2411699
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Showing 3 changed files with 4 additions and 2 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -26,6 +26,7 @@
 - `[jest-transform]` Add support for transformers written in ESM ([#11163](https://github.com/facebook/jest/pull/11163))
 - `[jest-transform]` [**BREAKING**] Do not export `ScriptTransformer` class, instead export the async function `createScriptTransformer` ([#11163](https://github.com/facebook/jest/pull/11163))
 - `[jest-transform]` Async code transformations ([#9889](https://github.com/facebook/jest/pull/9889))
+- `[jest-transform]` Support transpiled transformers
 - `[jest-worker]` Add support for custom task queues and adds a `PriorityQueue` implementation. ([#10921](https://github.com/facebook/jest/pull/10921))
 - `[jest-worker]` Add in-order scheduling policy to jest worker ([10902](https://github.com/facebook/jest/pull/10902))
 
@@ -73,6 +74,7 @@
 - `[*]` [**BREAKING**] Add `exports` field to all `package.json`s ([#9921](https://github.com/facebook/jest/pull/9921))
 - `[*]` Make it easier for Jest's packages to use the VM escape hatch ([#10824](https://github.com/facebook/jest/pull/10824))
 - `[*]` [**BREAKING**] Remove deprecated `mapCoverage` ([#9968](https://github.com/facebook/jest/pull/9968))
+- `[babel-jest]` [**BREAKING**] Migrate to ESM
 - `[docs]` Correct example using `browser-resolve` ([#11140](https://github.com/facebook/jest/pull/11140))
 - `[jest-config]` [**BREAKING**] Remove `enabledTestsMap` config, use `filter` instead ([#10787](https://github.com/facebook/jest/pull/10787))
 - `[jest-console]` [**BREAKING**] Move `root` into `config` and take `GlobalConfig` as mandatory parameter for `getConsoleOutput` ([#10126](https://github.com/facebook/jest/pull/10126))

diff --git a/packages/babel-jest/src/index.ts b/packages/babel-jest/src/index.ts
@@ -167,4 +167,4 @@ const transformer: SyncTransformer<TransformOptions> = {
   createTransformer,
 };
 
-export = transformer;
+export default transformer;
diff --git a/packages/jest-transform/src/ScriptTransformer.ts b/packages/jest-transform/src/ScriptTransformer.ts
@@ -255,7 +255,7 @@ class ScriptTransformer {
           let transformer: Transformer;
 
           try {
-            transformer = require(transformPath);
+            transformer = interopRequireDefault(require(transformPath)).default;
           } catch (error) {
             if (error.code === 'ERR_REQUIRE_ESM') {
               const configUrl = pathToFileURL(transformPath);