diff --git a/packages/helpers/__tests__/command-runner.test.ts b/packages/helpers/__tests__/command-runner.test.ts
index e7f70973..255a5916 100644
--- a/packages/helpers/__tests__/command-runner.test.ts
+++ b/packages/helpers/__tests__/command-runner.test.ts
@@ -1,4 +1,5 @@
 import * as exec from '@actions/exec'
+import * as core from '@actions/core'
 import {CommandRunner, createCommandRunner} from '../src/helpers'
 
 describe('command-runner', () => {
@@ -12,6 +13,7 @@ describe('command-runner', () => {
 
   describe('CommandRunner', () => {
     const execSpy = jest.spyOn(exec, 'exec')
+    const failSpy = jest.spyOn(core, 'setFailed')
 
     afterEach(() => {
       jest.resetAllMocks()
@@ -199,6 +201,228 @@ describe('command-runner', () => {
 
         expect(middleware).toHaveBeenCalledTimes(1)
       })
+
+      it('fails if event matches', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: '', stderr: '', exitCode: 1})
+        )
+
+        failSpy.mockImplementation(() => {})
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .on('!stdout', 'fail')
+          .run()
+
+        expect(failSpy).toHaveBeenCalledWith(
+          `The command "echo" finished with exit code 1 and produced an empty output.`
+        )
+      })
+
+      it('throws error if event matches', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: '', stderr: '', exitCode: 1})
+        )
+
+        const cmdPromise = createCommandRunner('echo', ['hello', 'world'])
+          .onExitCode('> 0', 'throw')
+          .run()
+
+        await expect(cmdPromise).rejects.toThrow(
+          'The command "echo" finished with exit code 1 and produced an empty output.'
+        )
+      })
+
+      it('logs if event matches', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: '', stderr: 'test', exitCode: 1})
+        )
+
+        const logSpy = jest.spyOn(core, 'error')
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .on('!ok', 'log')
+          .run()
+
+        expect(logSpy).toHaveBeenCalledWith(
+          'The command "echo" finished with exit code 1 and produced an error: test'
+        )
+      })
+    })
+
+    describe('default handlers', () => {
+      test('onEmptyOutput', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: '', stderr: '', exitCode: 0})
+        )
+
+        const notCalledMiddleware = jest.fn()
+        const middleware = jest.fn()
+
+        await createCommandRunner('echo', ['hello', 'world'])
+          .onError(notCalledMiddleware)
+          .onEmptyOutput(middleware)
+          .onError(notCalledMiddleware)
+          .run()
+
+        expect(middleware).toHaveBeenCalledTimes(1)
+        expect(notCalledMiddleware).not.toHaveBeenCalled()
+      })
+
+      test('onExecutionError', async () => {
+        execSpy.mockImplementation(() => {
+          throw new Error('test')
+        })
+
+        const notCalledMiddleware = jest.fn()
+        const middleware = jest.fn()
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .onSuccess(notCalledMiddleware)
+          .onExecutionError(middleware)
+          .onSuccess(notCalledMiddleware)
+          .run()
+
+        expect(middleware).toHaveBeenCalledTimes(1)
+        expect(notCalledMiddleware).not.toHaveBeenCalled()
+      })
+
+      test('onStdError', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: '', stderr: 'test', exitCode: 0})
+        )
+
+        const notCalledMiddleware = jest.fn()
+        const middleware = jest.fn()
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .onSuccess(notCalledMiddleware)
+          .onStdError(middleware)
+          .onSuccess(notCalledMiddleware)
+          .run()
+
+        expect(middleware).toHaveBeenCalledTimes(1)
+        expect(notCalledMiddleware).not.toHaveBeenCalled()
+      })
+
+      test('onError', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: '', stderr: 'test', exitCode: 0})
+        )
+
+        const notCalledMiddleware = jest.fn()
+        const middleware = jest.fn()
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .onSuccess(notCalledMiddleware)
+          .onError(middleware)
+          .onSuccess(notCalledMiddleware)
+          .run()
+
+        execSpy.mockImplementation(() => {
+          throw new Error('test')
+        })
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .onSuccess(notCalledMiddleware)
+          .onError(middleware)
+          .onSuccess(notCalledMiddleware)
+          .run()
+
+        expect(middleware).toHaveBeenCalledTimes(2)
+        expect(notCalledMiddleware).not.toHaveBeenCalled()
+      })
+
+      test('onSpecificError', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: '', stderr: 'test', exitCode: 0})
+        )
+
+        const notCalledMiddleware = jest.fn()
+        const middleware = jest.fn()
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .onSuccess(notCalledMiddleware)
+          .onSpecificError(/test/, middleware)
+          .onSuccess(notCalledMiddleware)
+          .run()
+
+        expect(middleware).toHaveBeenCalledTimes(1)
+        expect(notCalledMiddleware).not.toHaveBeenCalled()
+      })
+
+      test('onSuccess', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: '', stderr: '', exitCode: 0})
+        )
+
+        const notCalledMiddleware = jest.fn()
+        const middleware = jest.fn()
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .onError(notCalledMiddleware)
+          .onSuccess(middleware)
+          .onError(notCalledMiddleware)
+          .run()
+
+        expect(middleware).toHaveBeenCalledTimes(1)
+        expect(notCalledMiddleware).not.toHaveBeenCalled()
+      })
+
+      test('onExitcode', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: '', stderr: '', exitCode: 2})
+        )
+
+        const notCalledMiddleware = jest.fn()
+        const middleware = jest.fn()
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .onSuccess(notCalledMiddleware)
+          .onExitCode('> 0', middleware)
+          .onSuccess(notCalledMiddleware)
+          .run()
+
+        expect(middleware).toHaveBeenCalledTimes(1)
+        expect(notCalledMiddleware).not.toHaveBeenCalled()
+      })
+
+      test('onOutput', async () => {
+        execSpy.mockImplementation(
+          createExecMock({stdout: 'test', stderr: '', exitCode: 0})
+        )
+
+        const notCalledMiddleware = jest.fn()
+        const middleware = jest.fn()
+
+        await createCommandRunner('echo', ['hello', 'world'], {
+          silent: true
+        })
+          .onError(notCalledMiddleware)
+          .onOutput(/test/, middleware)
+          .onError(notCalledMiddleware)
+          .run()
+
+        expect(middleware).toHaveBeenCalledTimes(1)
+        expect(notCalledMiddleware).not.toHaveBeenCalled()
+      })
     })
   })
 })
diff --git a/packages/helpers/src/command-runner/middleware.ts b/packages/helpers/src/command-runner/middleware.ts
index aa8632ba..8814c2e6 100644
--- a/packages/helpers/src/command-runner/middleware.ts
+++ b/packages/helpers/src/command-runner/middleware.ts
@@ -92,36 +92,38 @@ export const failAction: CommandRunnerAction = message => async ctx => {
 /**
  * Throws an error with the given message or with a default one depending on execution conditions.
  */
-export const throwError: CommandRunnerAction = message => async ctx => {
-  const events = getEventTypesFromContext(ctx)
+export const throwError: CommandRunnerAction = message => {
+  return async ctx => {
+    const events = getEventTypesFromContext(ctx)
+
+    if (message !== undefined) {
+      throw new Error(
+        typeof message === 'string' ? message : message(ctx, events)
+      )
+    }
+
+    if (events.includes('execerr')) {
+      throw new Error(
+        `The command "${ctx.commandLine}" failed to run: ${ctx.execerr?.message}`
+      )
+    }
+
+    if (events.includes('stderr')) {
+      throw new Error(
+        `The command "${ctx.commandLine}" finished with exit code ${ctx.exitCode} and produced an error: ${ctx.stderr}`
+      )
+    }
+
+    if (!events.includes('stdout')) {
+      throw new Error(
+        `The command "${ctx.commandLine}" finished with exit code ${ctx.exitCode} and produced an empty output.`
+      )
+    }
 
-  if (message !== undefined) {
     throw new Error(
-      typeof message === 'string' ? message : message(ctx, events)
+      `The command "${ctx.commandLine}" finished with exit code ${ctx.exitCode} and produced the following output: ${ctx.stdout}`
     )
   }
-
-  if (events.includes('execerr')) {
-    throw new Error(
-      `The command "${ctx.commandLine}" failed to run: ${ctx.execerr?.message}`
-    )
-  }
-
-  if (events.includes('stderr')) {
-    throw new Error(
-      `The command "${ctx.commandLine}" finished with exit code ${ctx.exitCode} and produced an error: ${ctx.stderr}`
-    )
-  }
-
-  if (!events.includes('stdout')) {
-    throw new Error(
-      `The command "${ctx.commandLine}" finished with exit code ${ctx.exitCode} and produced an empty output.`
-    )
-  }
-
-  throw new Error(
-    `The command "${ctx.commandLine}" finished with exit code ${ctx.exitCode} and produced the following output: ${ctx.stdout}`
-  )
 }
 
 /**
@@ -345,7 +347,7 @@ export const matchExitCode = (
   return async (ctx, next) => {
     // if exit code is undefined, NaN will not match anything
     if (matcherFn(ctx.exitCode ?? NaN)) {
-      composedMiddleware(ctx, next)
+      await composedMiddleware(ctx, next)
       return
     }