Change formatTimeToMaturity to be a helper method.

Author: valentinewallace

src/action/channel.js

@@ -3,7 +3,7 @@
  * call the corresponding GRPC apis for channel management.
  */
 
-import { toSatoshis, poll } from '../helper';
+import { toSatoshis, poll, formatTimeTilMaturity } from '../helper';
 import * as log from './log';
 
 class ChannelAction {
@@ -160,7 +160,7 @@ class ChannelAction {
         limboBalance: pfcc.limboBalance,
         maturityHeight: pfcc.maturityHeight,
         blocksTilMaturity: pfcc.blocksTilMaturity,
-        timeTilAvailable: this._formatTimeTilMaturity(pfcc.blocksTilMaturity),
+        timeTilAvailable: formatTimeTilMaturity(pfcc.blocksTilMaturity),
         status: 'pending-force-closing',
       }));
       const wccs = response.waitingCloseChannels.map(wcc => ({
@@ -347,12 +347,6 @@ class ChannelAction {
     const channel = pc.find(c => c.channelPoint === channelPoint);
     if (channel) pc.splice(pc.indexOf(channel));
   }
-
-  _formatTimeTilMaturity(numBlocks) {
-    const days = Math.floor(numBlocks / (24 * 6));
-    const hours = Math.floor((numBlocks % (24 * 6)) / 6);
-    return `${days} days and ${hours} hours`;
-  }
 }
 
 export default ChannelAction;

src/helper.js

@@ -321,3 +321,15 @@ export const generateArc = (x, y, radius, startAngle, endAngle) => {
     'Z',
   ].join(' ');
 };
+
+/**
+ * Convert a number of blocks to an amount of time in the format "X days and Y
+ * hours" assuming 10 minutes per block.
+ * @param  {number} numBlocks The number of blocks to convert.
+ * @return {string} The amount of time the blocks is equivalent to.
+ */
+export const formatTimeTilMaturity = numBlocks => {
+  const days = Math.floor(numBlocks / (24 * 6));
+  const hours = Math.floor((numBlocks % (24 * 6)) / 6);
+  return `${days} days and ${hours} hours`;
+};

test/unit/helper.spec.js

@@ -817,4 +817,12 @@ describe('Helpers Unit Tests', () => {
       );
     });
   });
+
+  describe('formatTimeTilMaturity()', () => {
+    it('should format blocks to human-readable time', () => {
+      const numBlocks = 463;
+      const time = helpers.formatTimeTilMaturity(numBlocks);
+      expect(time, 'to equal', '3 days and 5 hours');
+    });
+  });
 });