Turn prettier back on and just use the comment to ignore places that TS2.9 doesn't like

modules/effects/src/effects_metadata.ts

@@ -40,10 +40,7 @@ export function getSourceForInstance<T>(instance: T): T {
 }
 
 export function getSourceMetadata<T>(instance: T): Array<EffectMetadata<T>> {
-  return compose(
-    getEffectMetadataEntries,
-    getSourceForInstance
-  )(instance);
+  return compose(getEffectMetadataEntries, getSourceForInstance)(instance);
 }
 
 export type EffectsMetadata<T> = { [key in keyof T]?: { dispatch: boolean } };

modules/store-devtools/src/reducer.ts

@@ -330,6 +330,7 @@ export function liftReducerWith(
           skippedActionIds,
           committedState,
           currentStateIndex,
+          // prettier-ignore
           computedStates
         } = liftedAction.nextLiftedState);
         break;

prettier.config.js

@@ -1,4 +1,4 @@
 module.exports = {
   singleQuote: true,
-  trailingComma: 'none',
+  trailingComma: 'es5',
 };