chore: do not export ScriptTransformer (#9256)

CHANGELOG.md

@@ -25,6 +25,7 @@
 - `[jest-matcher-utils]` Add `BigInt` support to `ensureNumbers` `ensureActualIsNumber`, `ensureExpectedIsNumber` ([#8382](https://github.com/facebook/jest/pull/8382))
 - `[jest-reporters]` Export utils for path formatting ([#9162](https://github.com/facebook/jest/pull/9162))
 - `[jest-runner]` Warn if a worker had to be force exited ([#8206](https://github.com/facebook/jest/pull/8206))
+- `[jest-runtime]` [**BREAKING**] Do not export `ScriptTransformer` - it can be imported from `@jest/transform` instead ([#9256](https://github.com/facebook/jest/pull/9256))
 - `[jest-snapshot]` Display change counts in annotation lines ([#8982](https://github.com/facebook/jest/pull/8982))
 - `[jest-snapshot]` [**BREAKING**] Improve report when the matcher has properties ([#9104](https://github.com/facebook/jest/pull/9104))
 - `[jest-snapshot]` Improve colors when snapshots are updatable ([#9132](https://github.com/facebook/jest/pull/9132))

packages/jest-runtime/src/index.ts

@@ -80,8 +80,6 @@ const unmockRegExpCache = new WeakMap();
 
 /* eslint-disable-next-line no-redeclare */
 class Runtime {
-  static ScriptTransformer: typeof ScriptTransformer;
-
   private _cacheFS: CacheFS;
   private _config: Config.ProjectConfig;
   private _coverageOptions: ShouldInstrumentOptions;
@@ -1088,6 +1086,4 @@ class Runtime {
   }
 }
 
-Runtime.ScriptTransformer = ScriptTransformer;
-
 export = Runtime;