feat(xod-project): add function isPulsePin to check is Pin Type equal to Pulse

packages/xod-project/src/index.js

@@ -45,6 +45,7 @@ export {
   isTerminalPin,
   normalizePinLabels,
   isPinBindable,
+  isPulsePin,
 } from './pin';
 export * from './link';
 export * from './constants';

packages/xod-project/src/pin.js

@@ -156,6 +156,18 @@ export const isTerminalPin = def(
   )
 );
 
+/**
+ * Checks pin type to be Pulse
+ * TODO: Add functions for other types when needed.
+ */
+export const isPulsePin = def(
+  'isPulsePin :: Pin -> Boolean',
+  R.compose(
+    R.equals(CONST.PIN_TYPE.PULSE),
+    getPinType
+  )
+);
+
 // =============================================================================
 //
 // Setters

packages/xod-project/test/pin.spec.js

@@ -79,6 +79,16 @@ describe('Pin', () => {
       expect(Pin.isTerminalPin(pin)).to.be.true();
     });
   });
+  describe('isPulsePin', () => {
+    it('should return false for non-pulse pin', () => {
+      const pin = Helper.defaultizePin({ type: CONST.PIN_TYPE.STRING });
+      expect(Pin.isPulsePin(pin)).to.be.false();
+    });
+    it('should return true for pulse pin', () => {
+      const pin = Helper.defaultizePin({ type: CONST.PIN_TYPE.PULSE });
+      expect(Pin.isPulsePin(pin)).to.be.true();
+    });
+  });
   describe('normalizePinLabels', () => {
     it('should return list of pins with unique labels', () => {
       const pins = [