Some type imports (interfaces) (#2887)

* Some type imports (interfaces)

* Additional

* Additional

* Small movements/fixes

* Additional

* Additional

* Unsaved...

packages/api-derive/src/chain/bestNumber.ts

@@ -1,9 +1,9 @@
 // Copyright 2017-2020 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import { BlockNumber } from '@polkadot/types/interfaces';
+import type { Observable } from 'rxjs';
+import type { BlockNumber } from '@polkadot/types/interfaces';
 
-import { Observable } from 'rxjs';
 import { map } from 'rxjs/operators';
 import { ApiInterfaceRx } from '@polkadot/api/types';
 

packages/api-derive/src/chain/bestNumberFinalized.ts

@@ -1,9 +1,9 @@
 // Copyright 2017-2020 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import { BlockNumber } from '@polkadot/types/interfaces';
+import type { Observable } from 'rxjs';
+import type { BlockNumber } from '@polkadot/types/interfaces';
 
-import { Observable } from 'rxjs';
 import { map } from 'rxjs/operators';
 import { ApiInterfaceRx } from '@polkadot/api/types';
 

packages/api-derive/src/chain/bestNumberLag.ts

@@ -1,9 +1,10 @@
 // Copyright 2017-2020 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import { BlockNumber } from '@polkadot/types/interfaces';
+import type { Observable } from 'rxjs';
+import type { BlockNumber } from '@polkadot/types/interfaces';
 
-import { Observable, combineLatest } from 'rxjs';
+import { combineLatest } from 'rxjs';
 import { map } from 'rxjs/operators';
 import { ApiInterfaceRx } from '@polkadot/api/types';
 

packages/api-derive/src/chain/getBlock.ts

@@ -1,9 +1,10 @@
 // Copyright 2017-2020 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
+import type { Observable } from 'rxjs';
 import { ApiInterfaceRx } from '@polkadot/api/types';
 
-import { Observable, combineLatest, of } from 'rxjs';
+import { combineLatest, of } from 'rxjs';
 import { catchError, map } from 'rxjs/operators';
 
 import { SignedBlockExtended } from '../type';

packages/api-derive/src/chain/getHeader.ts

@@ -1,9 +1,10 @@
 // Copyright 2017-2020 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
+import type { Observable } from 'rxjs';
 import { ApiInterfaceRx } from '@polkadot/api/types';
 
-import { Observable, combineLatest, of } from 'rxjs';
+import { combineLatest, of } from 'rxjs';
 import { catchError, map } from 'rxjs/operators';
 
 import { HeaderExtended } from '../type';

packages/api-derive/src/chain/subscribeNewBlocks.ts

@@ -1,11 +1,12 @@
 // Copyright 2017-2020 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import { ApiInterfaceRx } from '@polkadot/api/types';
-import { EventRecord, Hash, SignedBlock } from '@polkadot/types/interfaces';
-import { FullNewBlock } from '../types';
+import type { Observable } from 'rxjs';
+import type { ApiInterfaceRx } from '@polkadot/api/types';
+import type { EventRecord, Hash, SignedBlock } from '@polkadot/types/interfaces';
+import type { FullNewBlock } from '../types';
 
-import { Observable, combineLatest, of } from 'rxjs';
+import { combineLatest, of } from 'rxjs';
 import { map, switchMap } from 'rxjs/operators';
 
 import { memo } from '../util';

packages/api-derive/src/chain/subscribeNewHeads.ts

@@ -1,9 +1,10 @@
 // Copyright 2017-2020 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
+import type { Observable } from 'rxjs';
 import { ApiInterfaceRx } from '@polkadot/api/types';
 
-import { Observable, combineLatest, of } from 'rxjs';
+import { combineLatest, of } from 'rxjs';
 import { map } from 'rxjs/operators';
 
 import { HeaderExtended } from '../type';

packages/api-derive/src/chain/types.ts

@@ -1,7 +1,7 @@
 // Copyright 2017-2020 @polkadot/api-derive authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import { Block, BlockNumber, EventRecord, Hash, Justification } from '@polkadot/types/interfaces';
+import type { Block, BlockNumber, EventRecord, Hash, Justification } from '@polkadot/types/interfaces';
 
 export interface FullNewBlock {
   block: Block;