Paginate and remove old labels (#96)

* Paginate to get all changed files. Add option to remove labels

* build

* format and build

.github/main.workflow

@@ -1,14 +0,0 @@
-workflow "Lint JavaScript" {
-  on = "push"
-  resolves = ["Lint", "Formatting"]
-}
-
-action "Lint" {
-  uses = "actions/npm@v2.0.0"
-  runs = "npx eslint --no-eslintrc --env es6 --parser-options ecmaVersion:2018 entrypoint.js"
-}
-
-action "Formatting" {
-  uses = "actions/npm@v2.0.0"
-  runs = "npx prettier -c --no-semi --no-bracket-spacing --single-quote entrypoint.js"
-}

.gitignore

@@ -1 +1,3 @@
+.DS_Store
 node_modules/
+lib/

CODE_OF_CONDUCT.md

@@ -1,76 +0,0 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to making participation in our project and
-our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, sex characteristics, gender identity and expression,
-level of experience, education, socio-economic status, nationality, personal
-appearance, race, religion, or sexual identity and orientation.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment
-include:
-
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-* The use of sexualized language or imagery and unwelcome sexual attention or
-  advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic
-  address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in
-response to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community. Examples of
-representing a project or community include using an official project e-mail
-address, posting via an official social media account, or acting as an appointed
-representative at an online or offline event. Representation of a project may be
-further defined and clarified by project maintainers.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at [INSERT EMAIL ADDRESS]. All
-complaints will be reviewed and investigated and will result in a response that
-is deemed necessary and appropriate to the circumstances. The project team is
-obligated to maintain confidentiality with regard to the reporter of an incident.
-Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
-
-[homepage]: https://www.contributor-covenant.org
-
-For answers to common questions about this code of conduct, see
-https://www.contributor-covenant.org/faq

CONTRIBUTING.md

@@ -1,33 +0,0 @@
-## Contributing
-
-[fork]: https://github.com/actions/labeler/fork
-[pr]: https://github.com/actions/labeler/compare
-[code-of-conduct]: https://github.com/actions/labeler/blob/master/CODE_OF_CONDUCT.md
-
-Hi there! We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
-
-Contributions to this project are [released](https://help.github.com/articles/github-terms-of-service/#6-contributions-under-repository-license) to the public under the [project's open source license](LICENSE.md).
-
-Please note that this project is released with a [Contributor Code of Conduct][code-of-conduct]. By participating in this project you agree to abide by its terms.
-
-## Submitting a pull request
-
-0. [Fork][fork] and clone the repository
-0. Configure and install the dependencies: `script/bootstrap`
-0. Make sure the tests pass on your machine: `rake`
-0. Create a new branch: `git checkout -b my-branch-name`
-0. Make your change, add tests, and make sure the tests still pass
-0. Push to your fork and [submit a pull request][pr]
-0. Pat your self on the back and wait for your pull request to be reviewed and merged.
-
-Here are a few things you can do that will increase the likelihood of your pull request being accepted:
-
-- Write tests.
-- 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).
-
-## Resources
-
-- [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/)
-- [Using Pull Requests](https://help.github.com/articles/about-pull-requests/)
-- [GitHub Help](https://help.github.com)

Dockerfile

@@ -1,20 +0,0 @@
-FROM node:slim
-
-LABEL "name"="labeler"
-LABEL "maintainer"="GitHub Actions <support+actions@github.com>"
-LABEL "version"="1.0.0"
-
-LABEL "com.github.actions.name"="PR Labeller"
-LABEL "com.github.actions.description"="An action that labels pull requests according to changed files"
-LABEL "com.github.actions.icon"="tag"
-LABEL "com.github.actions.color"="orange"
-
-COPY *.md /
-
-COPY package*.json ./
-
-RUN npm ci
-
-COPY entrypoint.js /entrypoint.js
-
-ENTRYPOINT ["node", "/entrypoint.js"]

LICENSE

@@ -1,6 +1,7 @@
-MIT License
 
-Copyright (c) 2019 GitHub
+The MIT License (MIT)
+
+Copyright (c) 2018 GitHub, Inc. and 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
@@ -9,13 +10,13 @@ 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 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.
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -1,50 +1,98 @@
-# Pull Request Labeller
+# Pull Request Labeler
 
-This action labels pull requests by comparing their changed files to a configuration file in the repository.
+Pull request labeler triages PRs based on the paths that are modified in the PR.
 
-For example, a configuration file at `.github/triage.yml` may look like this:
+Note that only pull requests being opened from the same repository can be labeled.  This action will not currently work for pull requests from forks -- like is common in open source projects -- because the token for forked pull request workflows does not have write permissions.
 
-```yaml
-design:
-  - src/frontend/**/*.css
-  - src/frontend/**/*.png
+## Usage
 
-server:
-  - src/server/**/*
+### Create `.github/labeler.yml`
+
+Create a `.github/labeler.yml` file with a list of labels and [minimatch](https://github.com/isaacs/minimatch) globs to match to apply the label.
+
+The key is the name of the label in your repository that you want to add (eg: "merge conflict", "needs-updating") and the value is the path (glob) of the changed files (eg: `src/**/*`, `tests/*.spec.js`) or a match object.
+
+#### Match Object
+
+For more control over matching, you can provide a match object instead of a simple path glob. The match object is defined as:
+
+```yml
+- any: ['list', 'of', 'globs']
+  all: ['list', 'of', 'globs']
 ```
 
-And the action would be used like this:
+One or both fields can be provided for fine-grained matching. Unlike the top-level list, the list of path globs provided to `any` and `all` must ALL match against a path for the label to be applied.
 
-```workflow
-workflow "Apply PR labels" {
-  on = "pull_request"
-  resolves = "Apply labels"
-}
+The fields are defined as follows:
+* `any`: match ALL globs against ANY changed path
+* `all`: match ALL globs against ALL changed paths
 
-action "On sync" {
-  uses = "actions/bin/filter@master"
-  args = "action synchronize"
-}
-
-action "Apply labels" {
-  uses = "actions/labeller@v1.0.0"
-  needs = "On sync"
-  env = {LABEL_SPEC_FILE=".github/triage.yml"}
-  secrets = ["GITHUB_TOKEN"]
-}
+A simple path glob is the equivalent to `any: ['glob']`. More specifically, the following two configurations are equivalent:
+```yml
+label1:
+- example1/*
+```
+and
+```yml
+label1:
+- any: ['example1/*']
 ```
 
-Now, whenever a user pushes to a pull request, this action will determine whether any changed files in that pull request match the specification file (note: this action uses [minimatch](https://github.com/isaacs/minimatch) to determine matches). If there are matches, the action will apply the appropriate labels to the pull request.
+From a boolean logic perspective, top-level match objects are `OR`-ed together and indvidual match rules within an object are `AND`-ed. Combined with `!` negation, you can write complex matching rules.
 
-## Contributing
+#### Basic Examples
 
-Check out [this doc](CONTRIBUTING.md).
+```yml
+# Add 'label1' to any changes within 'example' folder or any subfolders
+label1:
+  - example/**/*
 
-## License
+# Add 'label2' to any file changes within 'example2' folder
+label2: example2/*
+```
 
-This action is released under the [MIT license](LICENSE.md).
-Container images built with this project include third party materials. See [THIRD_PARTY_NOTICE.md](THIRD_PARTY_NOTICE.md) for details.
+#### Common Examples
 
-## Current Status
+```yml
+# Add 'repo' label to any root file changes
+repo:
+  - ./*
+  
+# Add '@domain/core' label to any change within the 'core' package
+@domain/core:
+  - package/core/*
+  - package/core/**/*
 
-This action is in active development.
+# Add 'test' label to any change to *.spec.js files within the source dir
+test:
+  - src/**/*.spec.js
+
+# Add 'source' label to any change to src files within the source dir EXCEPT for the docs sub-folder
+source:
+- any: ['src/**/*', '!src/docs/*']
+
+# Add 'frontend` label to any change to *.js files as long as the `main.js` hasn't changed
+frontend:
+- any: ['src/**/*.js']
+  all: ['!src/main.js']
+```
+
+### Create Workflow
+
+Create a workflow (eg: `.github/workflows/labeler.yml` see [Creating a Workflow file](https://help.github.com/en/articles/configuring-a-workflow#creating-a-workflow-file)) to utilize the labeler action with content:
+
+```
+name: "Pull Request Labeler"
+on:
+- pull_request
+
+jobs:
+  triage:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/labeler@v2
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"
+```
+
+_Note: This grants access to the `GITHUB_TOKEN` so the action can make calls to GitHub's rest API_

__tests__/main.test.ts

@@ -0,0 +1,3 @@
+describe("TODO - Add a test suite", () => {
+  it("TODO - Add a test", async () => {});
+});

action.yml

@@ -0,0 +1,18 @@
+name: 'Labeler'
+description: 'Add labels to new pull requests based on the files that are changed'
+author: 'GitHub'
+inputs: 
+  repo-token:
+    description: 'The GITHUB_TOKEN secret'
+  configuration-path:
+    description: 'The path for the label configurations'
+    default: '.github/labeler.yml'
+    required: false
+  sync-labels:
+    description: 'Whether or not to remove labels when matching files are reverted'
+    default: false
+    required: false
+
+runs:
+  using: 'node12'
+  main: 'dist/index.js'

docs/contributors.md

@@ -0,0 +1,22 @@
+# Contributors
+
+### Checkin
+
+- Do checkin source (src)
+- Do checkin build output (lib)
+- Do checkin runtime node_modules
+- Do not checkin devDependency node_modules (husky can help see below)
+
+### devDependencies
+
+In order to handle correctly checking in node_modules without devDependencies, we run [Husky](https://github.com/typicode/husky) before each commit.
+This step ensures that formatting and checkin rules are followed and that devDependencies are excluded. To make sure Husky runs correctly, please use the following workflow:
+
+```
+npm install                                 # installs all devDependencies including Husky
+git add abc.ext                             # Add the files you've changed. This should include files in src, lib, and node_modules (see above)
+git commit -m "Informative commit message"  # Commit. This will run Husky
+```
+
+During the commit step, Husky will take care of formatting all files with [Prettier](https://github.com/prettier/prettier) as well as pruning out devDependencies using `npm prune --production`.
+It will also make sure these changes are appropriately included in your commit (no further work is needed)

entrypoint.js

@@ -1,103 +0,0 @@
-const {Toolkit} = require('actions-toolkit')
-const fs = require('fs')
-const minimatch = require('minimatch')
-const yaml = require('js-yaml')
-
-const tools = new Toolkit()
-
-main().catch(err => {
-  tools.log.fatal(err)
-  tools.exit.failure()
-})
-
-async function main() {
-  const specFile = readSpecFile()
-  const changedFiles = await getChangedFiles()
-
-  for (const label in specFile) {
-    let globs
-
-    if (typeof specFile[label] === 'string') {
-      globs = [specFile[label]]
-    } else if (Array.isArray(specFile[label])) {
-      globs = specFile[label]
-    } else {
-      throw new Error('Spec file values must be strings or arrays of strings')
-    }
-
-    for (const glob of globs) {
-      for (const changedFile of changedFiles) {
-        if (minimatch(changedFile, glob)) {
-          await tools.github.issues.addLabels(
-            tools.context.issue({labels: [label]})
-          )
-        }
-      }
-    }
-  }
-}
-
-async function getChangedFiles(changedFiles = [], cursor = null) {
-  const [nextCursor, paths] = await queryChangedFiles(cursor)
-
-  if (paths.length < 100) {
-    return changedFiles.concat(paths)
-  }
-
-  return getChangedFiles(changedFiles.concat(paths), nextCursor)
-}
-
-async function queryChangedFiles(cursor) {
-  const result = await tools.github.graphql(
-    `
-    query($owner: String!, $repo: String!, $number: Int!, $cursor: String) {
-      repository(owner: $owner, name: $repo) {
-        pullRequest(number: $number) {
-          files(first: 100, after: $cursor) {
-            edges {
-              cursor
-            }
-
-            nodes {
-              path
-            }
-          }
-        }
-      }
-    }
-  `,
-    tools.context.issue({cursor})
-  )
-
-  const nextCursor = result.repository.pullRequest.files.edges.cursor
-  const paths = result.repository.pullRequest.files.nodes.map(node => node.path)
-  return [nextCursor, paths]
-}
-
-function readSpecFile() {
-  const specFilePath = process.env.LABEL_SPEC_FILE
-
-  let specFile
-
-  try {
-    specFile = yaml.safeLoad(fs.readFileSync(specFilePath))
-  } catch (err) {
-    if (err.code === 'ERR_INVALID_ARG_TYPE') {
-      tools.log.error('You must provide a LABEL_SPEC_FILE environment variable')
-    }
-
-    if (err.code === 'ENOENT') {
-      tools.log.error(
-        `Expected a configuration file at "${specFilePath}", but no file was found`
-      )
-    }
-
-    if (err.name === 'YAMLException') {
-      tools.log.error('Configuration file is not valid YAML')
-    }
-
-    throw err
-  }
-
-  return specFile
-}

jest.config.js

@@ -0,0 +1,11 @@
+module.exports = {
+  clearMocks: true,
+  moduleFileExtensions: ['js', 'ts'],
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.ts'],
+  testRunner: 'jest-circus/runner',
+  transform: {
+    '^.+\\.ts$': 'ts-jest'
+  },
+  verbose: true
+}

package.json

@@ -1,11 +1,44 @@
 {
-  "name": "action-labeller",
-  "private": true,
+  "name": "labeler",
+  "version": "3.0.0",
+  "description": "Labels pull requests by files altered",
+  "main": "lib/main.js",
+  "scripts": {
+    "build": "tsc && ncc build lib/main.js",
+    "format": "prettier --write **/*.ts",
+    "format-check": "prettier --check **/*.ts",
+    "test": "jest"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/actions/labeler.git"
+  },
+  "keywords": [
+    "github",
+    "actions",
+    "label",
+    "labeler"
+  ],
+  "author": "GitHub",
   "license": "MIT",
-  "main": "index.js",
   "dependencies": {
-    "actions-toolkit": "^1.6.0",
-    "js-yaml": "^3.13.0",
-    "minimatch": "^3.0.4"
+    "@actions/core": "^1.2.4",
+    "@actions/github": "^2.2.0",
+    "js-yaml": "^3.13.1",
+    "minimatch": "^3.0.4",
+    "semver": "^6.1.1"
+  },
+  "devDependencies": {
+    "@types/jest": "^24.0.13",
+    "@types/node": "^12.0.4",
+    "@types/semver": "^6.0.0",
+    "@types/minimatch": "^3.0.0",
+    "@types/js-yaml": "^3.12.1",
+    "@zeit/ncc": "^0.21.1",
+    "jest": "^24.8.0",
+    "jest-circus": "^24.7.1",
+    "prettier": "^1.17.1",
+    "ts-jest": "^24.0.2",
+    "typescript": "^3.5.1"
   }
 }

src/main.ts

@@ -0,0 +1,261 @@
+import * as core from "@actions/core";
+import * as github from "@actions/github";
+import * as yaml from "js-yaml";
+import { Minimatch, IMinimatch } from "minimatch";
+
+interface MatchConfig {
+  all?: string[];
+  any?: string[];
+}
+
+type StringOrMatchConfig = string | MatchConfig;
+
+async function run() {
+  try {
+    const token = core.getInput("repo-token", { required: true });
+    const configPath = core.getInput("configuration-path", { required: true });
+    const syncLabels = !!core.getInput("sync-labels", { required: false });
+
+    const prNumber = getPrNumber();
+    if (!prNumber) {
+      console.log("Could not get pull request number from context, exiting");
+      return;
+    }
+
+    const client = new github.GitHub(token);
+
+    const { data: pullRequest } = await client.pulls.get({
+      owner: github.context.repo.owner,
+      repo: github.context.repo.repo,
+      pull_number: prNumber
+    });
+
+    core.debug(`fetching changed files for pr #${prNumber}`);
+    const changedFiles: string[] = await getChangedFiles(client, prNumber);
+    const labelGlobs: Map<string, StringOrMatchConfig[]> = await getLabelGlobs(
+      client,
+      configPath
+    );
+
+    const labels: string[] = [];
+    const labelsToRemove: string[] = [];
+    for (const [label, globs] of labelGlobs.entries()) {
+      core.debug(`processing ${label}`);
+      if (checkGlobs(changedFiles, globs)) {
+        labels.push(label);
+      } else if (pullRequest.labels.find(l => l.name === label)) {
+        labelsToRemove.push(label);
+      }
+    }
+
+    if (labels.length > 0) {
+      await addLabels(client, prNumber, labels);
+    }
+
+    if (syncLabels && labelsToRemove.length) {
+      await removeLabels(client, prNumber, labelsToRemove);
+    }
+  } catch (error) {
+    core.error(error);
+    core.setFailed(error.message);
+  }
+}
+
+function getPrNumber(): number | undefined {
+  const pullRequest = github.context.payload.pull_request;
+  if (!pullRequest) {
+    return undefined;
+  }
+
+  return pullRequest.number;
+}
+
+async function getChangedFiles(
+  client: github.GitHub,
+  prNumber: number
+): Promise<string[]> {
+  const listFilesOptions = client.pulls.listFiles.endpoint.merge({
+    owner: github.context.repo.owner,
+    repo: github.context.repo.repo,
+    pull_number: prNumber
+  });
+
+  const listFilesResponse = await client.paginate(listFilesOptions);
+  const changedFiles = listFilesResponse.map(f => f.filename);
+
+  core.debug("found changed files:");
+  for (const file of changedFiles) {
+    core.debug("  " + file);
+  }
+
+  return changedFiles;
+}
+
+async function getLabelGlobs(
+  client: github.GitHub,
+  configurationPath: string
+): Promise<Map<string, StringOrMatchConfig[]>> {
+  const configurationContent: string = await fetchContent(
+    client,
+    configurationPath
+  );
+
+  // loads (hopefully) a `{[label:string]: string | StringOrMatchConfig[]}`, but is `any`:
+  const configObject: any = yaml.safeLoad(configurationContent);
+
+  // transform `any` => `Map<string,StringOrMatchConfig[]>` or throw if yaml is malformed:
+  return getLabelGlobMapFromObject(configObject);
+}
+
+async function fetchContent(
+  client: github.GitHub,
+  repoPath: string
+): Promise<string> {
+  const response: any = await client.repos.getContents({
+    owner: github.context.repo.owner,
+    repo: github.context.repo.repo,
+    path: repoPath,
+    ref: github.context.sha
+  });
+
+  return Buffer.from(response.data.content, response.data.encoding).toString();
+}
+
+function getLabelGlobMapFromObject(
+  configObject: any
+): Map<string, StringOrMatchConfig[]> {
+  const labelGlobs: Map<string, StringOrMatchConfig[]> = new Map();
+  for (const label in configObject) {
+    if (typeof configObject[label] === "string") {
+      labelGlobs.set(label, [configObject[label]]);
+    } else if (configObject[label] instanceof Array) {
+      labelGlobs.set(label, configObject[label]);
+    } else {
+      throw Error(
+        `found unexpected type for label ${label} (should be string or array of globs)`
+      );
+    }
+  }
+
+  return labelGlobs;
+}
+
+function toMatchConfig(config: StringOrMatchConfig): MatchConfig {
+  if (typeof config === "string") {
+    return {
+      any: [config]
+    };
+  }
+
+  return config;
+}
+
+function printPattern(matcher: IMinimatch): string {
+  return (matcher.negate ? "!" : "") + matcher.pattern;
+}
+
+function checkGlobs(
+  changedFiles: string[],
+  globs: StringOrMatchConfig[]
+): boolean {
+  for (const glob of globs) {
+    core.debug(` checking pattern ${JSON.stringify(glob)}`);
+    const matchConfig = toMatchConfig(glob);
+    if (checkMatch(changedFiles, matchConfig)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+function isMatch(changedFile: string, matchers: IMinimatch[]): boolean {
+  core.debug(`    matching patterns against file ${changedFile}`);
+  for (const matcher of matchers) {
+    core.debug(`   - ${printPattern(matcher)}`);
+    if (!matcher.match(changedFile)) {
+      core.debug(`   ${printPattern(matcher)} did not match`);
+      return false;
+    }
+  }
+
+  core.debug(`   all patterns matched`);
+  return true;
+}
+
+// equivalent to "Array.some()" but expanded for debugging and clarity
+function checkAny(changedFiles: string[], globs: string[]): boolean {
+  const matchers = globs.map(g => new Minimatch(g));
+  core.debug(`  checking "any" patterns`);
+  for (const changedFile of changedFiles) {
+    if (isMatch(changedFile, matchers)) {
+      core.debug(`  "any" patterns matched against ${changedFile}`);
+      return true;
+    }
+  }
+
+  core.debug(`  "any" patterns did not match any files`);
+  return false;
+}
+
+// equivalent to "Array.every()" but expanded for debugging and clarity
+function checkAll(changedFiles: string[], globs: string[]): boolean {
+  const matchers = globs.map(g => new Minimatch(g));
+  core.debug(` checking "all" patterns`);
+  for (const changedFile of changedFiles) {
+    if (!isMatch(changedFile, matchers)) {
+      core.debug(`  "all" patterns did not match against ${changedFile}`);
+      return false;
+    }
+  }
+
+  core.debug(`  "all" patterns matched all files`);
+  return true;
+}
+
+function checkMatch(changedFiles: string[], matchConfig: MatchConfig): boolean {
+  if (matchConfig.all !== undefined) {
+    if (!checkAll(changedFiles, matchConfig.all)) {
+      return false;
+    }
+  }
+
+  if (matchConfig.any !== undefined) {
+    if (!checkAny(changedFiles, matchConfig.any)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+async function addLabels(
+  client: github.GitHub,
+  prNumber: number,
+  labels: string[]
+) {
+  await client.issues.addLabels({
+    owner: github.context.repo.owner,
+    repo: github.context.repo.repo,
+    issue_number: prNumber,
+    labels: labels
+  });
+}
+
+async function removeLabels(
+  client: github.GitHub,
+  prNumber: number,
+  labels: string[]
+) {
+  await Promise.all(
+    labels.map(label =>
+      client.issues.removeLabel({
+        owner: github.context.repo.owner,
+        repo: github.context.repo.repo,
+        issue_number: prNumber,
+        name: label
+      })
+    )
+  );
+}
+
+run();

tsconfig.json

@@ -0,0 +1,63 @@
+{
+  "compilerOptions": {
+    /* Basic Options */
+    // "incremental": true,                   /* Enable incremental compilation */
+    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    "outDir": "./lib",                       /* Redirect output structure to the directory. */
+    "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "composite": true,                     /* Enable project compilation */
+    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
+    // "removeComments": true,                /* Do not emit comments to output. */
+    // "noEmit": true,                        /* Do not emit outputs. */
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": true,                           /* Enable all strict type-checking options. */
+    "noImplicitAny": false,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+  },
+  "exclude": ["node_modules", "**/*.test.ts"]
+}