Allow TS isolatedModules flag to be set for safer transpilation

Author: matmannion

packages/toolkit/src/entities/index.ts

@@ -1,5 +1,5 @@
 export { createEntityAdapter } from './create_adapter'
-export {
+export type {
   Dictionary,
   EntityState,
   EntityAdapter,

packages/toolkit/src/index.ts

@@ -189,5 +189,5 @@ export {
   SHOULD_AUTOBATCH,
   prepareAutoBatched,
   autoBatchEnhancer,
-  AutoBatchOptions,
 } from './autoBatchEnhancer'
+export type { AutoBatchOptions } from './autoBatchEnhancer'

packages/toolkit/src/query/index.ts

@@ -19,7 +19,8 @@ export type {
 } from './fetchBaseQuery'
 export { retry } from './retry'
 export { setupListeners } from './core/setupListeners'
-export { skipSelector, skipToken, SkipToken } from './core/buildSelectors'
+export { skipSelector, skipToken } from './core/buildSelectors'
+export type { SkipToken } from './core/buildSelectors'
 export type { CreateApi, CreateApiOptions } from './createApi'
 export { buildCreateApi } from './createApi'
 export { fakeBaseQuery } from './fakeBaseQuery'

packages/toolkit/tsconfig.base.json

@@ -26,6 +26,8 @@
     "skipLibCheck": true,
     // error out if import and file system have a casing mismatch. Recommended by TS
     "forceConsistentCasingInFileNames": true,
+    // ensure that each file can be safely transpiled by babel (etc.) without relying on other imports
+    "isolatedModules": true,
     "downlevelIteration": false,
     "allowSyntheticDefaultImports": true,
     "emitDeclarationOnly": true,