feat: consider pull_request_target event (#291)

Author: technote-space

__tests__/context-helper.test.ts

@@ -39,12 +39,18 @@ describe('isPush', () => {
 });
 
 describe('isPr', () => {
-  it('should return true', () => {
+  it('should return true 1', () => {
     expect(isPr(getContext({
       eventName: 'pull_request',
     }))).toBe(true);
   });
 
+  it('should return true 2', () => {
+    expect(isPr(getContext({
+      eventName: 'pull_request_target',
+    }))).toBe(true);
+  });
+
   it('should return false', () => {
     expect(isPr(getContext({
       eventName: 'release',

src/context-helper.ts

@@ -7,7 +7,7 @@ export const isRelease = (context: Context): boolean => 'release' === context.ev
 
 export const isPush = (context: Context): boolean => 'push' === context.eventName;
 
-export const isPr = (context: Context): boolean => 'pull_request' === context.eventName;
+export const isPr = (context: Context): boolean => 'pull_request' === context.eventName || 'pull_request_target' === context.eventName;
 
 export const isIssue = (context: Context): boolean => 'issues' === context.eventName;