grpc-js: Refactor getting stack trace into function

Author: murgatroid99

packages/grpc-js/src/client.ts

@@ -108,6 +108,10 @@ export type ClientOptions = Partial<ChannelOptions> & {
   callInvocationTransformer?: CallInvocationTransformer;
 };
 
+function getErrorStackString(error: Error): string {
+  return error.stack!.split('\n').slice(1).join('\n');
+}
+
 /**
  * A generic gRPC client. Primarily useful as a base class for all generated
  * clients.
@@ -340,7 +344,7 @@ export class Client {
         receivedStatus = true;
         if (status.code === Status.OK) {
           if (responseMessage === null) {
-            const callerStack = callerStackError.stack!.split('\n').slice(1).join('\n');
+            const callerStack = getErrorStackString(callerStackError);
             callProperties.callback!(callErrorFromStatus({
               code: Status.INTERNAL,
               details: 'No message received',
@@ -350,7 +354,7 @@ export class Client {
             callProperties.callback!(null, responseMessage);
           }
         } else {
-          const callerStack = callerStackError.stack!.split('\n').slice(1).join('\n');
+          const callerStack = getErrorStackString(callerStackError);
           callProperties.callback!(callErrorFromStatus(status, callerStack));
         }
         emitter.emit('status', status);
@@ -468,7 +472,7 @@ export class Client {
         receivedStatus = true;
         if (status.code === Status.OK) {
           if (responseMessage === null) {
-            const callerStack = callerStackError.stack!.split('\n').slice(1).join('\n');
+            const callerStack = getErrorStackString(callerStackError);
             callProperties.callback!(callErrorFromStatus({
               code: Status.INTERNAL,
               details: 'No message received',
@@ -478,7 +482,7 @@ export class Client {
             callProperties.callback!(null, responseMessage);
           }
         } else {
-          const callerStack = callerStackError.stack!.split('\n').slice(1).join('\n');
+          const callerStack = getErrorStackString(callerStackError);
           callProperties.callback!(callErrorFromStatus(status, callerStack));
         }
         emitter.emit('status', status);
@@ -597,7 +601,7 @@ export class Client {
         receivedStatus = true;
         stream.push(null);
         if (status.code !== Status.OK) {
-          const callerStack = callerStackError.stack!.split('\n').slice(1).join('\n');
+          const callerStack = getErrorStackString(callerStackError);
           stream.emit('error', callErrorFromStatus(status, callerStack));
         }
         stream.emit('status', status);
@@ -695,7 +699,7 @@ export class Client {
         receivedStatus = true;
         stream.push(null);
         if (status.code !== Status.OK) {
-          const callerStack = callerStackError.stack!.split('\n').slice(1).join('\n');
+          const callerStack = getErrorStackString(callerStackError);
           stream.emit('error', callErrorFromStatus(status, callerStack));
         }
         stream.emit('status', status);