node kind RPC (#5025)

* node kind RPC

* JS interface for parity_nodeKind

js/src/api/format/output.js

@@ -140,6 +140,10 @@ export function outHwAccountInfo (infos) {
     }, {});
 }
 
+export function outNodeKind (info) {
+  return info;
+}
+
 export function outNumber (number) {
   return new BigNumber(number || 0);
 }

js/src/api/format/output.spec.js

@@ -16,7 +16,7 @@
 
 import BigNumber from 'bignumber.js';
 
-import { outBlock, outAccountInfo, outAddress, outChainStatus, outDate, outHistogram, outHwAccountInfo, outNumber, outPeer, outPeers, outReceipt, outRecentDapps, outSyncing, outTransaction, outTrace, outVaultMeta } from './output';
+import { outBlock, outAccountInfo, outAddress, outChainStatus, outDate, outHistogram, outHwAccountInfo, outNodeKind, outNumber, outPeer, outPeers, outReceipt, outRecentDapps, outSyncing, outTransaction, outTrace, outVaultMeta } from './output';
 import { isAddress, isBigNumber, isInstanceOf } from '../../../test/types';
 
 describe('api/format/output', () => {
@@ -173,6 +173,14 @@ describe('api/format/output', () => {
     });
   });
 
+  describe('outNodeKind', () => {
+    it('formats the input as received', () => {
+      const kind = { availability: 'personal', capability: 'full' };
+
+      expect(outNodeKind(kind)).to.deep.equal(kind);
+    });
+  });
+
   describe('outNumber', () => {
     it('returns a BigNumber equalling the value', () => {
       const bn = outNumber('0x123456');

js/src/api/rpc/parity/parity.js

@@ -15,7 +15,7 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 import { inAddress, inAddresses, inData, inHex, inNumber16, inOptions, inBlockNumber } from '../../format/input';
-import { outAccountInfo, outAddress, outAddresses, outChainStatus, outHistogram, outHwAccountInfo, outNumber, outPeers, outRecentDapps, outTransaction, outVaultMeta } from '../../format/output';
+import { outAccountInfo, outAddress, outAddresses, outChainStatus, outHistogram, outHwAccountInfo, outNodeKind, outNumber, outPeers, outRecentDapps, outTransaction, outVaultMeta } from '../../format/output';
 
 export default class Parity {
   constructor (transport) {
@@ -290,6 +290,12 @@ export default class Parity {
       .execute('parity_chain');
   }
 
+  nodeKind () {
+    return this._transport
+      .execute('parity_nodeKind')
+      .then(outNodeKind);
+  }
+
   chain () {
     return this._transport
       .execute('parity_chain');