Clean up mock data setup.

Took the time to tweak the README.

# Conflicts:
#	README.md
#	dist/index.js.map

.github/dependabot.yml

@@ -9,3 +9,6 @@ updates:
     directory: /
     schedule:
       interval: daily
+    ignore:
+      - dependency-name: '@types/node'
+        update-types: ['version-update:semver-major']

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 16
+          cache: npm
+      - name: Install dependencies
+        run: npm ci --ignore-scripts
+      - name: Test
+        run: |
+          npm test
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 16
+          cache: npm
+      - name: Install dependencies
+        run: npm ci --ignore-scripts
+      - name: Check format
+        run: |
+          npm run format-check
+      - name: Lint
+        run: |
+          npm run lint

.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+  "recommendations": ["dbaeumer.vscode-eslint", "esbenp.prettier-vscode"]
+}

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+  "editor.formatOnSave": true,
+  "editor.defaultFormatter": "esbenp.prettier-vscode"
+}

CONTRIBUTING.md

@@ -73,6 +73,39 @@ Here are a few things you can do that will increase the likelihood of your pull
 - Keep your change as focused as possible. If there are multiple changes you would like to make that are not dependent upon each other, consider submitting them as separate pull requests.
 - Write a [good commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
 
+## Cutting a new release
+
+1. Go to [Draft a new
+release](https://github.com/actions/dependency-review-action/releases/new)
+in the Releases page.
+2. Make sure that the `Publish this Action to the GitHub Marketplace`
+checkbox is enabled
+
+<img width="481" alt="Screenshot 2022-06-15 at 12 08 19" src="https://user-images.githubusercontent.com/2161/173822484-4b60d8b4-c674-4bff-b5ff-b0c4a3650ab7.png">
+
+3. Click "Choose a tag" and then "Create new tag", where the tag name
+will be your version prefixed by a `v` (e.g. `v1.2.3`).
+4. Use a version number for the release title (e.g. "1.2.3").
+
+<img width="700" alt="Screenshot 2022-06-15 at 12 08 36" src="https://user-images.githubusercontent.com/2161/173822548-33ab3432-d679-4dc1-adf8-b50fdaf47de3.png">
+
+5. Add your release notes. If this is a major version make sure to
+include a small description of the biggest changes in the new version.
+6. Click "Publish Release".
+
+You now have a tag and release using the semver version you used
+above. The last remaining thing to do is to move the dynamic version
+identifier to match the current SHA. This allows users to adopt a
+major version number (e.g. `v1`) in their workflows while
+automatically getting all the
+minor/patch updates.
+
+To do this just force-create a new annotated tag and push it:
+```
+git tag -fa v2 -m "Updating v2 to 2.3.4"
+git push origin v2 --force
+```
+
 ## Resources
 
 - [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/)

README.md

@@ -1,14 +1,16 @@
 # dependency-review-action
 
-This action scans your pull requests for dependency changes and will raise an error if any new dependencies have existing vulnerabilities. The action is supported by an [API endpoint](https://docs.github.com/en/rest/reference/dependency-graph#dependency-review) that diffs the dependencies between any two revisions.
+This action scans your pull requests for dependency changes, and will
+raise an error if any vulnerabilities or invalid licenses are being introduced. The action is supported by an [API endpoint](https://docs.github.com/en/rest/reference/dependency-graph#dependency-review) that diffs the dependencies between any two revisions.
 
-The action is available for all public repositories, as well as private repositories that have Github Advanced Security licensed.
+The action is available for all public repositories, as well as private repositories that have GitHub Advanced Security licensed.
 
 <img width="854" alt="Screen Shot 2022-03-31 at 1 10 51 PM" src="https://user-images.githubusercontent.com/2161/161042286-b22d7dd3-13cb-458d-8744-ce70ed9bf562.png">
 
-
 ## Installation
 
+**Please keep in mind that you need a [GitHub Advanced Security](https://docs.github.com/en/enterprise-cloud@latest/get-started/learning-about-github/about-github-advanced-security) license if you're running this action on private repositories.**
+
 1. Add a new YAML workflow to your `.github/workflows` folder:
 
 ```yaml
@@ -28,9 +30,35 @@ jobs:
         uses: actions/dependency-review-action@v2
 ```
 
-Please keep in mind that you need a GitHub Advanced Security license if you're running this action on private repos.
+### GitHub Enterprise Server
+
+This action is available in GHES starting with version 3.6. Make sure
+[GitHub Advanced
+Security](https://docs.github.com/en/[email protected]/admin/code-security/managing-github-advanced-security-for-your-enterprise/enabling-github-advanced-security-for-your-enterprise)
+and [GitHub
+Connect](https://docs.github.com/en/[email protected]/admin/github-actions/managing-access-to-actions-from-githubcom/enabling-automatic-access-to-githubcom-actions-using-github-connect)
+are enabled.
+
+You can use the same workflow as above, replacing the `runs-on` value
+with the label of any of your runners (the default label
+is `self-hosted`):
+
+```yaml
+
+# ...
+
+jobs:
+  dependency-review:
+    runs-on: self-hosted
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v3
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v2
+```
 
 ## Configuration
+
 You can pass additional options to the Dependency Review
 Action using your workflow file. Here's an example workflow with
 all the possible configurations:
@@ -52,7 +80,11 @@ jobs:
           # Possible values: "critical", "high", "moderate", "low"
           # fail-on-severity: critical
           #
-          # You can only can only include one of these two options: `allow-licenses` and `deny-licences`
+          # Possible values: Any available git ref
+          # base-ref: ${{ github.event.pull_request.base.ref }}
+          # head-ref: ${{ github.event.pull_request.head.ref }}
+          #
+          # You can only include one of these two options: `allow-licenses` and `deny-licenses`. These options are not supported on GHES. 
           #
           # Possible values: Any `spdx_id` value(s) from https://docs.github.com/en/rest/licenses
           # allow-licenses: GPL-3.0, BSD-3-Clause, MIT
@@ -61,6 +93,11 @@ jobs:
           # deny-licenses: LGPL-2.0, BSD-2-Clause
 ```
 
+When the workflow with this action is caused by a `pull_request` or `pull_request_target` event,
+the `base-ref` and `head-ref` values have the defaults as shown above. If the workflow is caused by
+any other event, the `base-ref` and `head-ref` options must be
+explicitly set in the configuration file.
+
 ### Vulnerability Severity
 
 By default the action will fail on any pull request that contains a
@@ -82,7 +119,7 @@ This example will only fail on pull requests with `critical` and `high` vulnerab
 You can set the action to fail on pull requests based on the licenses of the dependencies
 they introduce. With `allow-licenses` you can define the list of licenses
 your repository will accept. Alternatively, you can use `deny-licenses` to only
-forbid a subset of licenses.
+forbid a subset of licenses. These options are not supported on GHES.
 
 You can use the [Licenses
 API](https://docs.github.com/en/rest/licenses) to see the full list of
@@ -107,6 +144,16 @@ to filter. A couple of examples:
 
 **Important**
 
+<<<<<<< HEAD
+- The action will only accept one of the two parameters; an error will
+  be raised if you provide both.
+- By default both parameters are empty (no license checking is
+  performed).
+- We don't have license information for all of your dependents. If we
+  can't detect the license for a dependency **we will inform you, but the
+  action won't fail**.
+=======
+* Checking for licenses is not supported on GHES.
 * The action will only accept one of the two parameters; an error will
 be raised if you provide both.
 * By default both parameters are empty (no license checking is
@@ -114,6 +161,7 @@ performed).
 * We don't have license information for all of your dependents. If we
 can't detect the license for a dependency **we will inform you, but the
 action won't fail**.
+>>>>>>> main
 
 ## Blocking pull requests
 
@@ -131,4 +179,5 @@ We are grateful for any contributions made to this project.
 Please read [CONTRIBUTING.MD](https://github.com/actions/dependency-review-action/blob/main/CONTRIBUTING.md) to get started.
 
 ## License
+
 This project is released under the [MIT License](https://github.com/actions/dependency-review-action/blob/main/LICENSE).

__tests__/config.test.ts

@@ -1,5 +1,6 @@
 import {expect, test, beforeEach} from '@jest/globals'
 import {readConfig} from '../src/config'
+import {getRefs} from '../src/git-refs'
 
 // GitHub Action inputs come in the form of environment variables
 // with an INPUT prefix (e.g. INPUT_FAIL-ON-SEVERITY)
@@ -10,9 +11,17 @@ function setInput(input: string, value: string) {
 // We want a clean ENV before each test. We use `delete`
 // since we want `undefined` values and not empty strings.
 function clearInputs() {
-  delete process.env['INPUT_FAIL-ON-SEVERITY']
-  delete process.env['INPUT_ALLOW-LICENSES']
-  delete process.env['INPUT_DENY-LICENSES']
+  const allowedOptions = [
+    'FAIL-ON-SEVERITY',
+    'ALLOW-LICENSES',
+    'DENY-LICENSES',
+    'BASE-REF',
+    'HEAD-REF'
+  ]
+
+  allowedOptions.forEach(option => {
+    delete process.env[`INPUT_${option.toUpperCase()}`]
+  })
 }
 
 beforeEach(() => {
@@ -51,3 +60,25 @@ test('it raises an error when given an unknown severity', async () => {
   setInput('fail-on-severity', 'zombies')
   expect(() => readConfig()).toThrow()
 })
+
+test('it uses the given refs when the event is not a pull request', async () => {
+  setInput('base-ref', 'a-custom-base-ref')
+  setInput('head-ref', 'a-custom-head-ref')
+
+  const refs = getRefs(readConfig(), {
+    payload: {},
+    eventName: 'workflow_dispatch'
+  })
+  expect(refs.base).toEqual('a-custom-base-ref')
+  expect(refs.head).toEqual('a-custom-head-ref')
+})
+
+test('it raises an error when no refs are provided and the event is not a pull request', async () => {
+  const options = readConfig()
+  expect(() =>
+    getRefs(options, {
+      payload: {},
+      eventName: 'workflow_dispatch'
+    })
+  ).toThrow()
+})

__tests__/filter.test.ts

@@ -15,7 +15,7 @@ let npmChange: Change = {
     {
       severity: 'critical',
       advisory_ghsa_id: 'first-random_string',
-      advisory_summary: 'very dangerouns',
+      advisory_summary: 'very dangerous',
       advisory_url: 'github.com/future-funk'
     }
   ]
@@ -34,7 +34,7 @@ let rubyChange: Change = {
     {
       severity: 'moderate',
       advisory_ghsa_id: 'second-random_string',
-      advisory_summary: 'not so dangerouns',
+      advisory_summary: 'not so dangerous',
       advisory_url: 'github.com/future-funk'
     },
     {

__tests__/licenses.test.ts

@@ -15,7 +15,7 @@ let npmChange: Change = {
     {
       severity: 'critical',
       advisory_ghsa_id: 'first-random_string',
-      advisory_summary: 'very dangerouns',
+      advisory_summary: 'very dangerous',
       advisory_url: 'github.com/future-funk'
     }
   ]
@@ -34,7 +34,7 @@ let rubyChange: Change = {
     {
       severity: 'moderate',
       advisory_ghsa_id: 'second-random_string',
-      advisory_summary: 'not so dangerouns',
+      advisory_summary: 'not so dangerous',
       advisory_url: 'github.com/future-funk'
     },
     {
@@ -68,3 +68,31 @@ 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([])
+})
+
+test('it fails if a license outside the allow list is found in both of added and removed changes', async () => {
+  const changes: Changes = [
+    {...npmChange, change_type: 'removed'},
+    npmChange,
+    {...rubyChange, change_type: 'removed'}
+  ]
+  const [invalidChanges, _] = getDeniedLicenseChanges(changes, {allow: ['BSD']})
+  expect(invalidChanges).toStrictEqual([npmChange])
+})

action.yml

@@ -10,6 +10,12 @@ inputs:
     description: Don't block PRs below this severity. Possible values are `low`, `moderate`, `high`, `critical`.
     required: false
     default: 'low'
+  base-ref:
+    description: The base git ref to be used for this check. Has a default value when the workflow event is `pull_request` or `pull_request_target`. Must be provided otherwise.
+    required: false
+  head-ref:
+    description: The head git ref to be used for this check. Has a default value when the workflow event is `pull_request` or `pull_request_target`. Must be provided otherwise.
+    required: false
   allow-licenses:
     description: Comma-separated list of allowed licenses (e.g. "MIT, GPL 3.0, BSD 2 Clause")
     required: false

dist/licenses.txt

@@ -624,6 +624,19 @@ Permission to use, copy, modify, and/or distribute this software for any purpose
 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 
+uuid
+MIT
+The MIT License (MIT)
+
+Copyright (c) 2010-2020 Robert Kieffer and other contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
 webidl-conversions
 BSD-2-Clause
 # The BSD 2-Clause License

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dependency-review-action",
-  "version": "0.0.1",
+  "version": "2.0.4",
   "private": true,
   "description": "A GitHub Action for Dependency Review",
   "main": "lib/main.js",
@@ -25,30 +25,30 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.8.2",
+    "@actions/core": "^1.9.1",
     "@actions/github": "^5.0.3",
     "@octokit/plugin-retry": "^3.0.9",
-    "@octokit/request-error": "^2.1.0",
+    "@octokit/request-error": "^3.0.1",
     "ansi-styles": "^6.1.0",
-    "got": "^12.1.0",
-    "nodemon": "^2.0.16",
+    "got": "^12.3.1",
+    "nodemon": "^2.0.19",
     "yaml": "^2.1.1",
-    "zod": "^3.17.3"
+    "zod": "^3.18.0"
   },
   "devDependencies": {
-    "@types/node": "^17.0.43",
-    "@typescript-eslint/eslint-plugin": "^5.28.0",
-    "@typescript-eslint/parser": "^5.28.0",
+    "@types/node": "^16.11.49",
+    "@typescript-eslint/eslint-plugin": "^5.33.1",
+    "@typescript-eslint/parser": "^5.33.1",
     "@vercel/ncc": "^0.34.0",
     "esbuild-register": "^3.3.3",
-    "eslint": "^8.17.0",
-    "eslint-plugin-github": "^4.3.6",
-    "eslint-plugin-jest": "^26.5.3",
+    "eslint": "^8.22.0",
+    "eslint-plugin-github": "^4.3.7",
+    "eslint-plugin-jest": "^26.8.3",
     "jest": "^27.5.1",
     "js-yaml": "^4.1.0",
-    "nodemon": "^2.0.16",
-    "prettier": "2.7.0",
+    "nodemon": "^2.0.19",
+    "prettier": "2.7.1",
     "ts-jest": "^27.1.4",
-    "typescript": "^4.7.3"
+    "typescript": "^4.7.4"
   }
-}
+}

src/config.ts

@@ -19,9 +19,14 @@ export function readConfig(): ConfigurationOptions {
     throw new Error("Can't specify both allow_licenses and deny_licenses")
   }
 
+  const base_ref = getOptionalInput('base-ref')
+  const head_ref = getOptionalInput('head-ref')
+
   return {
     fail_on_severity,
     allow_licenses: allow_licenses?.split(',').map(x => x.trim()),
-    deny_licenses: deny_licenses?.split(',').map(x => x.trim())
+    deny_licenses: deny_licenses?.split(',').map(x => x.trim()),
+    base_ref,
+    head_ref
   }
 }

src/filter.ts

@@ -1,5 +1,4 @@
-import {Changes} from './schemas'
-import {Severity, SEVERITIES} from './schemas'
+import {Changes, Severity, SEVERITIES} from './schemas'
 
 export function filterChangesBySeverity(
   severity: Severity,
@@ -7,7 +6,7 @@ export function filterChangesBySeverity(
 ): Changes {
   const severityIdx = SEVERITIES.indexOf(severity)
   let filteredChanges = []
-  for (let change of changes) {
+  for (const change of changes) {
     if (
       change === undefined ||
       change.vulnerabilities === undefined ||
@@ -16,7 +15,7 @@ export function filterChangesBySeverity(
       continue
     }
 
-    let fChange = {
+    const fChange = {
       ...change,
       vulnerabilities: change.vulnerabilities.filter(vuln => {
         const vulnIdx = SEVERITIES.indexOf(vuln.severity)

src/git-refs.ts

@@ -0,0 +1,42 @@
+import {PullRequestSchema, ConfigurationOptions} from './schemas'
+
+export function getRefs(
+  config: ConfigurationOptions,
+  context: {payload: {pull_request?: unknown}; eventName: string}
+): {base: string; head: string} {
+  let base_ref = config.base_ref
+  let head_ref = config.head_ref
+
+  // If possible, source default base & head refs from the GitHub event.
+  // The base/head ref from the config take priority, if provided.
+  if (
+    context.eventName === 'pull_request' ||
+    context.eventName === 'pull_request_target'
+  ) {
+    const pull_request = PullRequestSchema.parse(context.payload.pull_request)
+    base_ref = base_ref || pull_request.base.sha
+    head_ref = head_ref || pull_request.head.sha
+  }
+
+  if (!base_ref && !head_ref) {
+    throw new Error(
+      'Both a base ref and head ref must be provided, either via the `base_ref`/`head_ref` ' +
+        'config options, or by running a `pull_request`/`pull_request_target` workflow.'
+    )
+  } else if (!base_ref) {
+    throw new Error(
+      'A base ref must be provided, either via the `base_ref` config option, ' +
+        'or by running a `pull_request`/`pull_request_target` workflow.'
+    )
+  } else if (!head_ref) {
+    throw new Error(
+      'A head ref must be provided, either via the `head_ref` config option, ' +
+        'or by running a `pull_request`/`pull_request_target` workflow.'
+    )
+  }
+
+  return {
+    base: base_ref,
+    head: head_ref
+  }
+}

src/licenses.ts

@@ -1,4 +1,4 @@
-import {Change, ChangeSchema} from './schemas'
+import {Change} from './schemas'
 
 /**
  * Loops through a list of changes, filtering and returning the
@@ -13,20 +13,23 @@ import {Change, ChangeSchema} from './schemas'
  * @returns {[Array<Change>, Array<Change]} A tuple where the first element is the list of denied changes and the second one is the list of changes with unknown licenses
  */
 export function getDeniedLicenseChanges(
-  changes: Array<Change>,
+  changes: Change[],
   licenses: {
-    allow?: Array<string>
-    deny?: Array<string>
+    allow?: string[]
+    deny?: string[]
   }
-): [Array<Change>, Array<Change>] {
-  let {allow, deny} = licenses
+): [Change[], Change[]] {
+  const {allow, deny} = licenses
 
-  let disallowed: Change[] = []
-  let unknown: Change[] = []
+  const disallowed: Change[] = []
+  const unknown: Change[] = []
 
   for (const change of changes) {
-    let license = change.license
-    // TODO: be loud about unknown licenses
+    if (change.change_type === 'removed') {
+      continue
+    }
+
+    const license = change.license
     if (license === null) {
       unknown.push(change)
       continue

src/main.ts

@@ -3,40 +3,33 @@ import * as dependencyGraph from './dependency-graph'
 import * as github from '@actions/github'
 import styles from 'ansi-styles'
 import {RequestError} from '@octokit/request-error'
-import {Change, PullRequestSchema, Severity} from './schemas'
+import {Change, Severity} from './schemas'
 import {readConfig} from '../src/config'
 import {filterChangesBySeverity} from '../src/filter'
 import {getDeniedLicenseChanges} from './licenses'
+import {getRefs} from './git-refs'
 
 async function run(): Promise<void> {
   try {
-    if (github.context.eventName !== 'pull_request') {
-      throw new Error(
-        `This run was triggered by the "${github.context.eventName}" event, which is unsupported. Please ensure you are using the "pull_request" event for this workflow.`
-      )
-    }
-
-    const pull_request = PullRequestSchema.parse(
-      github.context.payload.pull_request
-    )
+    const config = readConfig()
+    const refs = getRefs(config, github.context)
 
     const changes = await dependencyGraph.compare({
       owner: github.context.repo.owner,
       repo: github.context.repo.repo,
-      baseRef: pull_request.base.sha,
-      headRef: pull_request.head.sha
+      baseRef: refs.base,
+      headRef: refs.head
     })
 
-    let config = readConfig()
-    let minSeverity = config.fail_on_severity
+    const minSeverity = config.fail_on_severity
     let failed = false
 
-    let licenses = {
+    const licenses = {
       allow: config.allow_licenses,
       deny: config.deny_licenses
     }
 
-    let filteredChanges = filterChangesBySeverity(
+    const filteredChanges = filterChangesBySeverity(
       minSeverity as Severity,
       changes
     )
@@ -52,17 +45,18 @@ async function run(): Promise<void> {
       }
     }
 
-    let [licenseErrors, unknownLicenses] = getDeniedLicenseChanges(
+    const [licenseErrors, unknownLicenses] = getDeniedLicenseChanges(
       changes,
       licenses
     )
 
     if (licenseErrors.length > 0) {
-      printLicensesError(licenseErrors, licenses)
-      printNullLicenses(unknownLicenses)
+      printLicensesError(licenseErrors)
       core.setFailed('Dependency review detected incompatible licenses.')
     }
 
+    printNullLicenses(unknownLicenses)
+
     if (failed) {
       core.setFailed('Dependency review detected vulnerable packages.')
     } else {
@@ -89,7 +83,7 @@ async function run(): Promise<void> {
   }
 }
 
-function printChangeVulnerabilities(change: Change) {
+function printChangeVulnerabilities(change: Change): void {
   for (const vuln of change.vulnerabilities) {
     core.info(
       `${styles.bold.open}${change.manifest} » ${change.name}@${
@@ -116,19 +110,11 @@ function renderSeverity(
   return `${styles.color[color].open}(${severity} severity)${styles.color[color].close}`
 }
 
-function printLicensesError(
-  changes: Array<Change>,
-  licenses: {
-    allow?: Array<string>
-    deny?: Array<string>
-  }
-): void {
-  if (changes.length == 0) {
+function printLicensesError(changes: Change[]): void {
+  if (changes.length === 0) {
     return
   }
 
-  let {allow = [], deny = []} = licenses
-
   core.info('\nThe following dependencies have incompatible licenses:\n')
   for (const change of changes) {
     core.info(
@@ -137,7 +123,11 @@ function printLicensesError(
   }
 }
 
-function printNullLicenses(changes: Array<Change>): void {
+function printNullLicenses(changes: Change[]): void {
+  if (changes.length === 0) {
+    return
+  }
+
   core.info('\nWe could not detect a license for the following dependencies:\n')
   for (const change of changes) {
     core.info(

src/schemas.ts

@@ -34,12 +34,14 @@ export const ConfigurationOptionsSchema = z
   .object({
     fail_on_severity: z.enum(SEVERITIES).default('low'),
     allow_licenses: z.array(z.string()).default([]),
-    deny_licenses: z.array(z.string()).default([])
+    deny_licenses: z.array(z.string()).default([]),
+    base_ref: z.string(),
+    head_ref: z.string()
   })
   .partial()
   .refine(
     obj => !(obj.allow_licenses && obj.deny_licenses),
-    "Your workflow file has both an allow_licenses list and deny_licenses list, but you can only set one or the other."
+    'Your workflow file has both an allow_licenses list and deny_licenses list, but you can only set one or the other.'
   )
 
 export const ChangesSchema = z.array(ChangeSchema)