Adjust support fo US English as per substrate (#811)

* Rename ExtinsicStatus Finalised -> Finalized

* Finalised heads -> Finalized

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

@@ -15,14 +15,14 @@ import { drr } from '../util/drr';
  * <BR>
  *
  * ```javascript
- * api.derive.chain.bestNumberFinalised((blockNumber) => {
+ * api.derive.chain.bestNumberFinalized((blockNumber) => {
  *   console.log(`the current finalised block is #${blockNumber}`);
  * });
  * ```
  */
-export function bestNumberFinalised (api: ApiInterface$Rx) {
+export function bestNumberFinalized (api: ApiInterface$Rx) {
   return (): Observable<BlockNumber> =>
-    (api.rpc.chain.subscribeFinalisedHeads() as Observable<Header>)
+    (api.rpc.chain.subscribeFinalizedHeads() as Observable<Header>)
       .pipe(
         filter((header: Header) => header && !!header.blockNumber),
         map(({ blockNumber }: Header) => blockNumber),

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

@@ -9,7 +9,7 @@ import { BlockNumber } from '@polkadot/types';
 
 import { drr } from '../util/drr';
 import { bestNumber } from './bestNumber';
-import { bestNumberFinalised } from './bestNumberFinalised';
+import { bestNumberFinalized } from './bestNumberFinalized';
 
 /**
  * @description Calculates the lag between finalised head and best head
@@ -26,10 +26,10 @@ export function bestNumberLag (api: ApiInterface$Rx) {
   return (): Observable<BlockNumber> =>
     combineLatest(
       bestNumber(api)(),
-      bestNumberFinalised(api)()
+      bestNumberFinalized(api)()
     ).pipe(
-      map(([bestNumber, bestNumberFinalised]) =>
-        new BlockNumber(bestNumber.sub(bestNumberFinalised))
+      map(([bestNumber, bestNumberFinalized]) =>
+        new BlockNumber(bestNumber.sub(bestNumberFinalized))
       ),
       drr()
     );

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

@@ -3,7 +3,7 @@
 // of the Apache-2.0 license. See the LICENSE file for details.
 
 export * from './bestNumber';
-export * from './bestNumberFinalised';
+export * from './bestNumberFinalized';
 export * from './bestNumberLag';
 export * from './getHeader';
 export * from './subscribeNewHead';

packages/api-derive/src/index.spec.ts

@@ -47,7 +47,7 @@ describe('derive', () => {
     testFunction(api)('balances', 'votingBalancesNominatorsFor', []);
 
     testFunction(api)('chain', 'bestNumber', []);
-    testFunction(api)('chain', 'bestNumberFinalised', []);
+    testFunction(api)('chain', 'bestNumberFinalized', []);
 
     testFunction(api)('democracy', 'referendumInfos', []);
     testFunction(api)('democracy', 'referendums', []);