fix: identify that trigger is persistent

src/subscribe.test.ts

@@ -12,6 +12,7 @@ const defaultTrigger = {
   name: 'foo',
   onChange: async () => {},
   onTeardown: async () => {},
+  persistent: false,
   relativePath: 'foo',
   retry: {
     retries: 0,

src/subscribe.ts

@@ -62,6 +62,12 @@ export const subscribe = (trigger: Trigger): Subscription => {
 
         activeTask = null;
       } else {
+        if (trigger.persistent) {
+          log.warn('ignoring event because the trigger is persistent');
+
+          return undefined;
+        }
+
         log.warn(
           'waiting for %s (%s) task to complete',
           trigger.name,

src/types.ts

@@ -120,6 +120,7 @@ export type Trigger = {
   name: string;
   onChange: OnChangeEventHandler;
   onTeardown?: OnTeardownEventHandler;
+  persistent: boolean;
   retry: Retry;
   throttleOutput: Throttle;
 };

src/watch.ts

@@ -93,6 +93,7 @@ export const watch = (
         name: trigger.name,
         onChange: trigger.onChange,
         onTeardown: trigger.onTeardown,
+        persistent: trigger.persistent ?? false,
         retry: trigger.retry ?? {
           retries: 0,
         },