Ignore removed changes in license checker

__tests__/licenses.test.ts

@@ -68,3 +68,21 @@ test('it fails all license checks when allow is provided an empty array', async
   })
   expect(invalidChanges.length).toBe(2)
 })
+
+test('it does not fail if a license outside the allow list is found in removed changes', async () => {
+  const changes: Changes = [
+    {...npmChange, change_type: 'removed'},
+    {...rubyChange, change_type: 'removed'}
+  ]
+  const [invalidChanges, _] = getDeniedLicenseChanges(changes, {allow: ['BSD']})
+  expect(invalidChanges).toStrictEqual([])
+})
+
+test('it does not fail if a license inside the deny list is found in removed changes', async () => {
+  const changes: Changes = [
+    {...npmChange, change_type: 'removed'},
+    {...rubyChange, change_type: 'removed'}
+  ]
+  const [invalidChanges, _] = getDeniedLicenseChanges(changes, {deny: ['BSD']})
+  expect(invalidChanges).toStrictEqual([])
+})

src/licenses.ts

@@ -25,6 +25,10 @@ export function getDeniedLicenseChanges(
   const unknown: Change[] = []
 
   for (const change of changes) {
+    if (change.change_type === 'removed') {
+      continue
+    }
+
     const license = change.license
     if (license === null) {
       unknown.push(change)