build(deps-dev): bump eslint-plugin-prettier from 5.2.5 to 5.2.6 (#397)

Bumps [eslint-plugin-prettier](https://github.com/prettier/eslint-plugin-prettier) from 5.2.5 to 5.2.6.
- [Release notes](https://github.com/prettier/eslint-plugin-prettier/releases)
- [Changelog](https://github.com/prettier/eslint-plugin-prettier/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prettier/eslint-plugin-prettier/compare/v5.2.5...v5.2.6)

---
updated-dependencies:
- dependency-name: eslint-plugin-prettier
  dependency-version: 5.2.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.eslintignore

@@ -0,0 +1,3 @@
+dist/
+lib/
+node_modules/

.eslintrc.json

@@ -1,17 +1,18 @@
 {
-    "env": {
-        "commonjs": true,
-        "es6": true,
-        "node": true
-    },
-    "extends": "eslint:recommended",
-    "globals": {
-        "Atomics": "readonly",
-        "SharedArrayBuffer": "readonly"
-    },
-    "parserOptions": {
-        "ecmaVersion": 2018
-    },
-    "rules": {
-    }
+  "env": { "node": true, "jest": true },
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": { "ecmaVersion": 9, "sourceType": "module" },
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:import/errors",
+    "plugin:import/warnings",
+    "plugin:import/typescript",
+    "plugin:prettier/recommended"
+  ],
+  "plugins": ["@typescript-eslint"],
+  "rules": {
+    "@typescript-eslint/camelcase": "off"
+  }
 }

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: peter-evans

.github/comment-body-addition.md

@@ -0,0 +1 @@
+This is still the second line.

.github/comment-body.md

@@ -0,0 +1,2 @@
+This is a multi-line test comment read from a file.
+This is the second line.

.github/comment-template.md

@@ -0,0 +1,2 @@
+This is a test comment template
+Render template variables such as {{ .foo }} and {{ .bar }}.

.github/dependabot.yml

@@ -0,0 +1,20 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "wednesday"
+    labels:
+      - "dependencies"
+
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "wednesday"
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-major"]
+    labels:
+      - "dependencies"

.github/workflows/automerge-dependabot.yml

@@ -0,0 +1,13 @@
+name: Auto-merge Dependabot
+on: pull_request
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - uses: peter-evans/enable-pull-request-automerge@v3
+        with:
+          token: ${{ secrets.ACTIONS_BOT_TOKEN }}
+          pull-request-number: ${{ github.event.pull_request.number }}
+          merge-method: squash

.github/workflows/ci.yml

@@ -0,0 +1,142 @@
+name: CI
+on:
+  push:
+    branches: [main]
+    paths-ignore:
+      - 'README.md'
+      - 'docs/**'
+  pull_request:
+    branches: [main]
+    paths-ignore:
+      - 'README.md'
+      - 'docs/**'
+
+permissions:
+  issues: write
+  pull-requests: write
+  contents: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    outputs:
+      issue-number: ${{ steps.vars.outputs.issue-number }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+      - run: npm run format-check
+      - run: npm run lint
+      - run: npm run test
+      - uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist
+      - uses: actions/upload-artifact@v4
+        with:
+          name: action.yml
+          path: action.yml
+      - id: vars
+        run: |
+          if [[ "${{ github.event_name }}" == "pull_request" ]]; then \
+            echo "issue-number=${{ github.event.number }}" >> $GITHUB_OUTPUT; \
+          else \
+            echo "issue-number=1" >> $GITHUB_OUTPUT; \
+          fi
+
+  test:
+    if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name == github.repository
+    needs: [build]
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target: [built, committed]
+    steps:
+      - uses: actions/checkout@v4
+      - if: matrix.target == 'built' || github.event_name == 'pull_request'
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist
+      - if: matrix.target == 'built' || github.event_name == 'pull_request'
+        uses: actions/download-artifact@v4
+        with:
+          name: action.yml
+          path: .
+
+      - name: Test create comment
+        uses: ./
+        id: couc
+        with:
+          issue-number: ${{ needs.build.outputs.issue-number }}
+          body: |
+            This is a multi-line test comment
+            - With GitHub **Markdown** :sparkles:
+            - Created by [create-or-update-comment][1]
+
+            [1]: https://github.com/peter-evans/create-or-update-comment
+          reactions: '+1'
+
+      - name: Test update comment
+        uses: ./
+        with:
+          comment-id: ${{ steps.couc.outputs.comment-id }}
+          body: |
+            **Edit:** Some additional info
+          reactions: eyes
+          reactions-edit-mode: replace
+
+      - name: Test add reactions
+        uses: ./
+        with:
+          comment-id: ${{ steps.couc.outputs.comment-id }}
+          reactions: |
+            heart
+            hooray
+            laugh
+
+      - name: Test create comment from file
+        uses: ./
+        id: couc2
+        with:
+          issue-number: ${{ needs.build.outputs.issue-number }}
+          body-path: .github/comment-body.md
+          reactions: |
+            +1
+
+      - name: Test update comment from file
+        uses: ./
+        with:
+          comment-id: ${{ steps.couc2.outputs.comment-id }}
+          body-path: .github/comment-body-addition.md
+          append-separator: space
+          reactions: eyes, rocket
+          reactions-edit-mode: replace
+
+  package:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    needs: [test]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v7
+        with:
+          token: ${{ secrets.ACTIONS_BOT_TOKEN }}
+          commit-message: Update distribution
+          title: Update distribution
+          body: |
+            - Updates the distribution for changes on `main`
+
+            Auto-generated by [create-pull-request][1]
+
+            [1]: https://github.com/peter-evans/create-pull-request
+          branch: update-distribution

.github/workflows/create-comment.yml

@@ -1,29 +0,0 @@
-name: Create Comment
-on:
-  push:
-    branches:
-      - master
-jobs:
-  createComment:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      # For debugging purposes. Remove this in production.
-      - name: Dump GitHub context
-        env:
-          GITHUB_CONTEXT: ${{ toJson(github) }}
-        run: echo "$GITHUB_CONTEXT"
-
-      - name: Create comment
-        uses: ./
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          issue-number: 1
-          body: |
-            This is a multi-line test comment
-            - With GitHub **Markdown**
-            - Created by [create-or-update-comment][1]
-
-            [1]: https://github.com/peter-evans/create-or-update-comment
-          reaction-type: '+1'

.github/workflows/slash-command-dispatch.yml

@@ -0,0 +1,26 @@
+name: Slash Command Dispatch
+on:
+  issue_comment:
+    types: [created]
+jobs:
+  slashCommandDispatch:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Slash Command Dispatch
+        uses: peter-evans/slash-command-dispatch@v4
+        with:
+          token: ${{ secrets.ACTIONS_BOT_TOKEN }}
+          config: >
+            [
+              {
+                "command": "rebase",
+                "permission": "admin",
+                "repository": "peter-evans/slash-command-dispatch-processor",
+                "issue_type": "pull-request"
+              },
+              {
+                "command": "test",
+                "permission": "admin",
+                "named_args": true
+              }
+            ]

.github/workflows/test-command.yml

@@ -0,0 +1,85 @@
+name: Test Command
+on:
+  repository_dispatch:
+    types: [test-command]
+jobs:
+  testCreateOrUpdateComment:
+    runs-on: ubuntu-latest
+    steps:
+      # Get the target repository and branch
+      - name: Get the target repository and branch
+        id: vars
+        run: |
+          repository=${{ github.event.client_payload.slash_command.repository }}
+          if [[ -z "$repository" ]]; then repository=${{ github.repository }}; fi
+          echo "repository=$repository" >> $GITHUB_OUTPUT
+          branch=${{ github.event.client_payload.slash_command.branch }}
+          if [[ -z "$branch" ]]; then branch="main"; fi
+          echo "branch=$branch" >> $GITHUB_OUTPUT
+
+      # Checkout the branch to test
+      - uses: actions/checkout@v4
+        with:
+          repository: ${{ steps.vars.outputs.repository }}
+          ref: ${{ steps.vars.outputs.branch }}
+
+      # Test create
+      - name: Create comment
+        uses: ./
+        id: couc
+        with:
+          issue-number: 1
+          body: |
+            This is a multi-line test comment
+            - With GitHub **Markdown** :sparkles:
+            - Created by [create-or-update-comment][1]
+
+            [1]: https://github.com/peter-evans/create-or-update-comment
+          reactions: '+1'
+
+      # Test update
+      - name: Update comment
+        uses: ./
+        with:
+          comment-id: ${{ steps.couc.outputs.comment-id }}
+          body: |
+            **Edit:** Some additional info
+          reactions: eyes
+          reactions-edit-mode: replace
+
+      # Test add reactions
+      - name: Add reactions
+        uses: ./
+        with:
+          comment-id: ${{ steps.couc.outputs.comment-id }}
+          reactions: heart, hooray, laugh
+
+      # Test create with body from file
+      - name: Create comment
+        uses: ./
+        with:
+          issue-number: 1
+          body-path: .github/comment-body.md
+
+      # Test create from template
+      - name: Render template
+        id: template
+        uses: chuhlomin/render-template@v1.10
+        with:
+          template: .github/comment-template.md
+          vars: |
+            foo: this
+            bar: that
+
+      - name: Create comment
+        uses: ./
+        with:
+          issue-number: 1
+          body: ${{ steps.template.outputs.result }}
+
+      - name: Add reaction
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          repository: ${{ github.event.client_payload.github.payload.repository.full_name }}
+          comment-id: ${{ github.event.client_payload.github.payload.comment.id }}
+          reactions: hooray

.github/workflows/test-v3.yml

@@ -0,0 +1,66 @@
+name: Test v3
+on: workflow_dispatch
+jobs:
+  testCreateOrUpdateComment:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      # Test create
+      - name: Create comment
+        uses: peter-evans/create-or-update-comment@v4
+        id: couc
+        with:
+          token: ${{ secrets.ACTIONS_BOT_TOKEN }}
+          issue-number: 1
+          body: |
+            This is a multi-line test comment
+            - With GitHub **Markdown** :sparkles:
+            - Created by [create-or-update-comment][1]
+
+            [1]: https://github.com/peter-evans/create-or-update-comment
+          reactions: '+1'
+
+      # Test update
+      - name: Update comment
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          token: ${{ secrets.ACTIONS_BOT_TOKEN }}
+          comment-id: ${{ steps.couc.outputs.comment-id }}
+          body: |
+            **Edit:** Some additional info
+          reactions: eyes
+          reactions-edit-mode: replace
+
+      # Test add reactions
+      - name: Add reactions
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          token: ${{ secrets.ACTIONS_BOT_TOKEN }}
+          comment-id: ${{ steps.couc.outputs.comment-id }}
+          reactions: heart, hooray, laugh
+
+      # Test create with body from file
+      - name: Create comment
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          token: ${{ secrets.ACTIONS_BOT_TOKEN }}
+          issue-number: 1
+          body-file: .github/comment-body.md
+
+      # Test create from template
+      - name: Render template
+        id: template
+        uses: chuhlomin/render-template@v1.10
+        with:
+          template: .github/comment-template.md
+          vars: |
+            foo: this
+            bar: that
+
+      - name: Create comment
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          token: ${{ secrets.ACTIONS_BOT_TOKEN }}
+          issue-number: 1
+          body: ${{ steps.template.outputs.result }}

.github/workflows/update-comment.yml

@@ -1,33 +0,0 @@
-name: Update Comment
-on:
-  issue_comment:
-    types: [created]
-jobs:
-  updateComment:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      # For debugging purposes. Remove this in production.
-      - name: Dump GitHub context
-        env:
-          GITHUB_CONTEXT: ${{ toJson(github) }}
-        run: echo "$GITHUB_CONTEXT"
-
-      - name: Update comment
-        if: github.event.issue.number == 1
-        uses: ./
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          comment-id: ${{ github.event.comment.id }}
-          body: |
-            **Edit:** Some additional info
-          reaction-type: eyes
-
-      - name: Add reaction
-        if: github.event.issue.number == 1
-        uses: ./
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          comment-id: ${{ github.event.comment.id }}
-          reaction-type: heart

.github/workflows/update-major-version.yml

@@ -0,0 +1,32 @@
+name: Update Major Version
+run-name: Update ${{ github.event.inputs.main_version }} to ${{ github.event.inputs.target }}
+
+on:
+  workflow_dispatch:
+    inputs:
+      target:
+        description: The target tag or reference
+        required: true
+      main_version:
+        type: choice
+        description: The major version tag to update
+        options:
+          - v3
+          - v4
+
+jobs:
+  tag:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        token: ${{ secrets.ACTIONS_BOT_TOKEN }}
+        fetch-depth: 0
+    - name: Git config
+      run: |
+        git config user.name actions-bot
+        git config user.email actions-bot@users.noreply.github.com
+    - name: Tag new target
+      run: git tag -f ${{ github.event.inputs.main_version }} ${{ github.event.inputs.target }}
+    - name: Push new tag
+      run: git push origin ${{ github.event.inputs.main_version }} --force

.gitignore

@@ -1 +1,2 @@
-node_modules
+lib/
+node_modules/

.prettierignore

@@ -0,0 +1,3 @@
+dist/
+lib/
+node_modules/

.prettierrc.json

@@ -0,0 +1,11 @@
+{
+  "printWidth": 80,
+  "tabWidth": 2,
+  "useTabs": false,
+  "semi": false,
+  "singleQuote": true,
+  "trailingComma": "none",
+  "bracketSpacing": false,
+  "arrowParens": "avoid",
+  "parser": "typescript"
+}

README.md

@@ -1,64 +1,88 @@
 # Create or Update Comment
+[![CI](https://github.com/peter-evans/create-or-update-comment/workflows/CI/badge.svg)](https://github.com/peter-evans/create-or-update-comment/actions?query=workflow%3ACI)
 [![GitHub Marketplace](https://img.shields.io/badge/Marketplace-Create%20or%20Update%20Comment-blue.svg?colorA=24292e&colorB=0366d6&style=flat&longCache=true&logo=data:image/png;base64,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)](https://github.com/marketplace/actions/create-or-update-comment)
 
 A GitHub action to create or update an issue or pull request comment.
 
-This action was created to help facilitate a GitHub Actions "ChatOps" solution in conjunction with [slash-command-dispatch](https://github.com/peter-evans/slash-command-dispatch) action.
-
 ## Usage
 
 ### Add a comment to an issue or pull request
 
 ```yml
       - name: Create comment
-        uses: peter-evans/create-or-update-comment@v1
+        uses: peter-evans/create-or-update-comment@v4
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
           issue-number: 1
           body: |
             This is a multi-line test comment
-            - With GitHub **Markdown**
+            - With GitHub **Markdown** :sparkles:
             - Created by [create-or-update-comment][1]
 
             [1]: https://github.com/peter-evans/create-or-update-comment
-          reaction-type: '+1'
+          reactions: '+1'
 ```
 
 ### Update a comment
 
 ```yml
       - name: Update comment
-        uses: peter-evans/create-or-update-comment@v1
+        uses: peter-evans/create-or-update-comment@v4
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
           comment-id: 557858210
           body: |
             **Edit:** Some additional info
-          reaction-type: eyes
+          reactions: eyes
 ```
 
-### Add a comment reaction
+### Add comment reactions
 
 ```yml
-      - name: Add reaction
-        uses: peter-evans/create-or-update-comment@v1
+      - name: Add reactions
+        uses: peter-evans/create-or-update-comment@v4
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
           comment-id: 557858210
-          reaction-type: heart
+          reactions: |
+            heart
+            hooray
+            laugh
 ```
 
 ### Action inputs
 
 | Name | Description | Default |
 | --- | --- | --- |
-| `token` | `GITHUB_TOKEN` or a `repo` scoped [PAT](https://help.github.com/en/github/authenticating-to-github/creating-a-personal-access-token-for-the-command-line). | |
+| `token` | `GITHUB_TOKEN` (`issues: write`, `pull-requests: write`) or a `repo` scoped [PAT](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token). | `GITHUB_TOKEN` |
 | `repository` | The full name of the repository in which to create or update a comment. | Current repository |
 | `issue-number` | The number of the issue or pull request in which to create a comment. | |
 | `comment-id` | The id of the comment to update. | |
-| `body` | The comment body. | |
+| `body` | The comment body. Cannot be used in conjunction with `body-path`. | |
+| `body-path` | The path to a file containing the comment body. Cannot be used in conjunction with `body`. | |
 | `edit-mode` | The mode when updating a comment, `replace` or `append`. | `append` |
-| `reaction-type` | The reaction to add to the comment. (`+1`, `-1`, `laugh`, `confused`, `heart`, `hooray`, `rocket`, `eyes`) | |
+| `append-separator` | The separator to use when appending to an existing comment. (`newline`, `space`, `none`) | `newline` |
+| `reactions` | A comma or newline separated list of reactions to add to the comment. (`+1`, `-1`, `laugh`, `confused`, `heart`, `hooray`, `rocket`, `eyes`) | |
+| `reactions-edit-mode` | The mode when updating comment reactions, `replace` or `append`. | `append` |
+
+Note: In *public* repositories this action does not work in `pull_request` workflows when triggered by forks.
+Any attempt will be met with the error, `Resource not accessible by integration`.
+This is due to token restrictions put in place by GitHub Actions. Private repositories can be configured to [enable workflows](https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/enabling-features-for-your-repository/managing-github-actions-settings-for-a-repository#enabling-workflows-for-forks-of-private-repositories) from forks to run without restriction. See [here](https://github.com/peter-evans/create-pull-request/blob/main/docs/concepts-guidelines.md#restrictions-on-repository-forks) for further explanation. Alternatively, use the [`pull_request_target`](https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target) event to comment on pull requests.
+
+#### Outputs
+
+The ID of the created comment will be output for use in later steps.
+Note that in order to read the step output the action step must have an id.
+
+```yml
+      - name: Create comment
+        uses: peter-evans/create-or-update-comment@v4
+        id: couc
+        with:
+          issue-number: 1
+          body: |
+            My comment
+      - name: Check outputs
+        run: |
+          echo "Comment ID - ${{ steps.couc.outputs.comment-id }}"
+```
 
 ### Where to find the id of a comment
 
@@ -74,16 +98,107 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Add reaction
-        uses: peter-evans/create-or-update-comment@v1
+        uses: peter-evans/create-or-update-comment@v4
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
           comment-id: ${{ github.event.comment.id }}
-          reaction-type: eyes
+          reactions: eyes
+```
+
+Some use cases might find the [find-comment](https://github.com/peter-evans/find-comment) action useful.
+This will search an issue or pull request for the first comment containing a specified string, and/or by a specified author.
+See the repository for detailed usage.
+
+In the following example, find-comment is used to determine if a comment has already been created on a pull request.
+If the find-comment action output `comment-id` returns an empty string, a new comment will be created.
+If it returns a value, the comment already exists and the content is replaced.
+```yml
+    - name: Find Comment
+      uses: peter-evans/find-comment@v3
+      id: fc
+      with:
+        issue-number: ${{ github.event.pull_request.number }}
+        comment-author: 'github-actions[bot]'
+        body-includes: Build output
+
+    - name: Create or update comment
+      uses: peter-evans/create-or-update-comment@v4
+      with:
+        comment-id: ${{ steps.fc.outputs.comment-id }}
+        issue-number: ${{ github.event.pull_request.number }}
+        body: |
+          Build output
+          ${{ steps.build.outputs.build-log }}
+        edit-mode: replace
+```
+
+If required, the create and update steps can be separated for greater control.
+```yml
+    - name: Find Comment
+      uses: peter-evans/find-comment@v3
+      id: fc
+      with:
+        issue-number: ${{ github.event.pull_request.number }}
+        comment-author: 'github-actions[bot]'
+        body-includes: This comment was written by a bot!
+
+    - name: Create comment
+      if: steps.fc.outputs.comment-id == ''
+      uses: peter-evans/create-or-update-comment@v4
+      with:
+        issue-number: ${{ github.event.pull_request.number }}
+        body: |
+          This comment was written by a bot!
+        reactions: rocket
+
+    - name: Update comment
+      if: steps.fc.outputs.comment-id != ''
+      uses: peter-evans/create-or-update-comment@v4
+      with:
+        comment-id: ${{ steps.fc.outputs.comment-id }}
+        body: |
+          This comment has been updated!
+        reactions: hooray
+```
+
+### Setting the comment body from a file
+
+```yml
+      - name: Create comment
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          issue-number: 1
+          body-path: 'comment-body.md'
+```
+
+### Using a markdown template
+
+In this example, a markdown template file is added to the repository at `.github/comment-template.md` with the following content.
+```
+This is a test comment template
+Render template variables such as {{ .foo }} and {{ .bar }}.
+```
+
+The template is rendered using the [render-template](https://github.com/chuhlomin/render-template) action and the result is used to create the comment.
+```yml
+      - name: Render template
+        id: template
+        uses: chuhlomin/render-template@v1.4
+        with:
+          template: .github/comment-template.md
+          vars: |
+            foo: this
+            bar: that
+
+      - name: Create comment
+        uses: peter-evans/create-or-update-comment@v4
+        with:
+          issue-number: 1
+          body: ${{ steps.template.outputs.result }}
 ```
 
 ### Accessing issues and comments in other repositories
 
-You can create and update comments in another repository by using a [PAT](https://help.github.com/en/github/authenticating-to-github/creating-a-personal-access-token-for-the-command-line) instead of `GITHUB_TOKEN`.
+You can create and update comments in another repository by using a [PAT](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token) instead of `GITHUB_TOKEN`.
 The user associated with the PAT must have write access to the repository.
 
 ## License

action.yml

@@ -3,21 +3,36 @@ description: 'Create or update an issue or pull request comment'
 inputs:
   token:
     description: 'GITHUB_TOKEN or a repo scoped PAT.'
-    required: true
+    default: ${{ github.token }}
   repository:
     description: 'The full name of the repository in which to create or update a comment.'
+    default: ${{ github.repository }}
   issue-number:
     description: 'The number of the issue or pull request in which to create a comment.'
   comment-id:
     description: 'The id of the comment to update.'
   body:
-    description: 'The comment body.'
+    description: 'The comment body. Cannot be used in conjunction with `body-path`.'
+  body-path:
+    description: 'The path to a file containing the comment body. Cannot be used in conjunction with `body`.'
+  body-file:
+    description: 'Deprecated in favour of `body-path`.'
   edit-mode:
     description: 'The mode when updating a comment, "replace" or "append".'
-  reaction-type:
-    description: 'The reaction to add to the comment.'
+    default: 'append'
+  append-separator:
+    description: 'The separator to use when appending to an existing comment. (`newline`, `space`, `none`)'
+    default: 'newline'
+  reactions:
+    description: 'A comma or newline separated list of reactions to add to the comment.'
+  reactions-edit-mode:
+    description: 'The mode when updating comment reactions, "replace" or "append".'
+    default: 'append'
+outputs:
+  comment-id:
+    description: 'The id of the created comment'
 runs:
-  using: 'node12'
+  using: 'node20'
   main: 'dist/index.js'
 branding:
   icon: 'message-square'

index.js

@@ -1,121 +0,0 @@
-const { inspect } = require("util");
-const core = require("@actions/core");
-const github = require("@actions/github");
-
-const REACTION_TYPES = [
-  "+1",
-  "-1",
-  "laugh",
-  "confused",
-  "heart",
-  "hooray",
-  "rocket",
-  "eyes"
-];
-
-async function addReaction(octokit, repo, comment_id, reactionType) {
-  if (REACTION_TYPES.includes(reactionType)) {
-    await octokit.reactions.createForIssueComment({
-      owner: repo[0],
-      repo: repo[1],
-      comment_id: comment_id,
-      content: reactionType
-    });
-    core.info(`Set '${reactionType}' reaction on comment.`);
-  } else {
-    core.setFailed("Invalid 'reaction-type'.");
-    return;
-  }
-}
-
-async function run() {
-  try {
-    const inputs = {
-      token: core.getInput("token"),
-      repository: core.getInput("repository"),
-      issueNumber: core.getInput("issue-number"),
-      commentId: core.getInput("comment-id"),
-      body: core.getInput("body"),
-      editMode: core.getInput("edit-mode"),
-      reactionType: core.getInput("reaction-type")
-    };
-    core.debug(`Inputs: ${inspect(inputs)}`);
-
-    const repository = inputs.repository
-      ? inputs.repository
-      : process.env.GITHUB_REPOSITORY;
-    const repo = repository.split("/");
-    core.debug(`repository: ${repository}`);
-
-    const editMode = inputs.editMode ? inputs.editMode : "append";
-    core.debug(`editMode: ${editMode}`);
-    if (!["append", "replace"].includes(editMode)) {
-      core.setFailed(`Invalid edit-mode '${editMode}'.`);
-      return;
-    }
-
-    const octokit = new github.GitHub(inputs.token);
-
-    if (inputs.issueNumber) {
-      // Create a comment
-      if (!inputs.body) {
-        core.setFailed("Missing comment 'body'.");
-        return;
-      }
-      const { data: comment } = await octokit.issues.createComment({
-        owner: repo[0],
-        repo: repo[1],
-        issue_number: inputs.issueNumber,
-        body: inputs.body
-      });
-      core.info(`Created comment on issue '${inputs.issueNumber}'.`);
-
-      // Set a comment reaction
-      if (inputs.reactionType) {
-        await addReaction(octokit, repo, comment.id, inputs.reactionType);
-      }
-    } else if (inputs.commentId) {
-      // Edit a comment
-      if (!inputs.body && !inputs.reactionType) {
-        core.setFailed("Missing either comment 'body' or 'reaction-type'.");
-        return;
-      }
-
-      if (inputs.body) {
-        var commentBody = "";
-        if (editMode == "append") {
-          // Get the comment body
-          const { data: comment } = await octokit.issues.getComment({
-            owner: repo[0],
-            repo: repo[1],
-            comment_id: inputs.commentId
-          });
-          commentBody = comment.body + "\n";
-        }
-
-        commentBody = commentBody + inputs.body;
-        core.debug(`Comment body: ${commentBody}`);
-        await octokit.issues.updateComment({
-          owner: repo[0],
-          repo: repo[1],
-          comment_id: inputs.commentId,
-          body: commentBody
-        });
-        core.info(`Updated comment id '${inputs.commentId}'.`);
-      }
-
-      // Set a comment reaction
-      if (inputs.reactionType) {
-        await addReaction(octokit, repo, inputs.commentId, inputs.reactionType);
-      }
-    } else {
-      core.setFailed("Missing either 'issue-number' or 'comment-id'.");
-      return;
-    }
-  } catch (error) {
-    core.debug(inspect(error));
-    core.setFailed(error.message);
-  }
-}
-
-run();

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

@@ -1,18 +1,25 @@
 {
   "name": "create-or-update-comment",
-  "version": "1.0.0",
+  "version": "4.0.0",
   "description": "Create or update an issue or pull request comment",
-  "main": "index.js",
+  "main": "lib/main.js",
   "scripts": {
-    "lint": "eslint index.js",
-    "package": "ncc build index.js -o dist",
-    "test": "eslint index.js && jest --passWithNoTests"
+    "build": "tsc && ncc build",
+    "format": "prettier --write '**/*.ts'",
+    "format-check": "prettier --check '**/*.ts'",
+    "lint": "eslint src/**/*.ts",
+    "test": "jest --passWithNoTests"
   },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/peter-evans/create-or-update-comment.git"
   },
-  "keywords": [],
+  "keywords": [
+    "actions",
+    "create",
+    "update",
+    "comment"
+  ],
   "author": "Peter Evans",
   "license": "MIT",
   "bugs": {
@@ -20,12 +27,24 @@
   },
   "homepage": "https://github.com/peter-evans/create-or-update-comment#readme",
   "dependencies": {
-    "@actions/core": "^1.1.1",
-    "@actions/github": "^2.0.0"
+    "@actions/core": "^1.11.1",
+    "@actions/github": "^6.0.0"
   },
   "devDependencies": {
-    "@zeit/ncc": "0.21.1",
-    "eslint": "6.8.0",
-    "jest": "25.1.0"
+    "@types/jest": "^27.0.3",
+    "@types/node": "^18.19.86",
+    "@typescript-eslint/eslint-plugin": "^5.62.0",
+    "@typescript-eslint/parser": "^5.62.0",
+    "@vercel/ncc": "^0.38.3",
+    "eslint": "^8.57.1",
+    "eslint-plugin-github": "^4.10.2",
+    "eslint-plugin-jest": "^27.9.0",
+    "eslint-plugin-prettier": "^5.2.6",
+    "jest": "^27.5.1",
+    "jest-circus": "^27.5.1",
+    "js-yaml": "^4.1.0",
+    "prettier": "^3.5.3",
+    "ts-jest": "^27.1.5",
+    "typescript": "^4.9.5"
   }
 }

renovate.json

@@ -1,5 +0,0 @@
-{
-  "extends": [
-    "config:base"
-  ]
-}

src/create-or-update-comment.ts

@@ -0,0 +1,282 @@
+import * as core from '@actions/core'
+import * as github from '@actions/github'
+import * as utils from './utils'
+import {inspect} from 'util'
+
+export interface Inputs {
+  token: string
+  repository: string
+  issueNumber: number
+  commentId: number
+  body: string
+  bodyPath: string
+  editMode: string
+  appendSeparator: string
+  reactions: string[]
+  reactionsEditMode: string
+}
+
+const REACTION_TYPES = [
+  '+1',
+  '-1',
+  'laugh',
+  'confused',
+  'heart',
+  'hooray',
+  'rocket',
+  'eyes'
+]
+
+function getReactionsSet(reactions: string[]): string[] {
+  const reactionsSet = [
+    ...new Set(
+      reactions.filter(item => {
+        if (!REACTION_TYPES.includes(item)) {
+          core.warning(`Skipping invalid reaction '${item}'.`)
+          return false
+        }
+        return true
+      })
+    )
+  ]
+  if (!reactionsSet) {
+    throw new Error(`No valid reactions are contained in '${reactions}'.`)
+  }
+  return reactionsSet
+}
+
+async function addReactions(
+  octokit,
+  owner: string,
+  repo: string,
+  commentId: number,
+  reactions: string[]
+) {
+  const results = await Promise.allSettled(
+    reactions.map(async reaction => {
+      await octokit.rest.reactions.createForIssueComment({
+        owner: owner,
+        repo: repo,
+        comment_id: commentId,
+        content: reaction
+      })
+      core.info(`Setting '${reaction}' reaction on comment.`)
+    })
+  )
+  for (let i = 0, l = results.length; i < l; i++) {
+    if (results[i].status === 'fulfilled') {
+      core.info(
+        `Added reaction '${reactions[i]}' to comment id '${commentId}'.`
+      )
+    } else if (results[i].status === 'rejected') {
+      core.warning(
+        `Adding reaction '${reactions[i]}' to comment id '${commentId}' failed.`
+      )
+    }
+  }
+}
+
+async function removeReactions(
+  octokit,
+  owner: string,
+  repo: string,
+  commentId: number,
+  reactions: Reaction[]
+) {
+  const results = await Promise.allSettled(
+    reactions.map(async reaction => {
+      await octokit.rest.reactions.deleteForIssueComment({
+        owner: owner,
+        repo: repo,
+        comment_id: commentId,
+        reaction_id: reaction.id
+      })
+      core.info(`Removing '${reaction.content}' reaction from comment.`)
+    })
+  )
+  for (let i = 0, l = results.length; i < l; i++) {
+    if (results[i].status === 'fulfilled') {
+      core.info(
+        `Removed reaction '${reactions[i].content}' from comment id '${commentId}'.`
+      )
+    } else if (results[i].status === 'rejected') {
+      core.warning(
+        `Removing reaction '${reactions[i].content}' from comment id '${commentId}' failed.`
+      )
+    }
+  }
+}
+
+function appendSeparatorTo(body: string, separator: string): string {
+  switch (separator) {
+    case 'newline':
+      return body + '\n'
+    case 'space':
+      return body + ' '
+    default: // none
+      return body
+  }
+}
+
+function truncateBody(body: string) {
+  // 65536 characters is the maximum allowed for issue comments.
+  const truncateWarning = '...*[Comment body truncated]*'
+  if (body.length > 65536) {
+    core.warning(`Comment body is too long. Truncating to 65536 characters.`)
+    return body.substring(0, 65536 - truncateWarning.length) + truncateWarning
+  }
+  return body
+}
+
+async function createComment(
+  octokit,
+  owner: string,
+  repo: string,
+  issueNumber: number,
+  body: string
+): Promise<number> {
+  body = truncateBody(body)
+
+  const {data: comment} = await octokit.rest.issues.createComment({
+    owner: owner,
+    repo: repo,
+    issue_number: issueNumber,
+    body
+  })
+  core.info(`Created comment id '${comment.id}' on issue '${issueNumber}'.`)
+  return comment.id
+}
+
+async function updateComment(
+  octokit,
+  owner: string,
+  repo: string,
+  commentId: number,
+  body: string,
+  editMode: string,
+  appendSeparator: string
+): Promise<number> {
+  if (body) {
+    let commentBody = ''
+    if (editMode == 'append') {
+      // Get the comment body
+      const {data: comment} = await octokit.rest.issues.getComment({
+        owner: owner,
+        repo: repo,
+        comment_id: commentId
+      })
+      commentBody = appendSeparatorTo(
+        comment.body ? comment.body : '',
+        appendSeparator
+      )
+    }
+    commentBody = truncateBody(commentBody + body)
+    core.debug(`Comment body: ${commentBody}`)
+    await octokit.rest.issues.updateComment({
+      owner: owner,
+      repo: repo,
+      comment_id: commentId,
+      body: commentBody
+    })
+    core.info(`Updated comment id '${commentId}'.`)
+  }
+  return commentId
+}
+
+async function getAuthenticatedUser(octokit): Promise<string> {
+  try {
+    const {data: user} = await octokit.rest.users.getAuthenticated()
+    return user.login
+  } catch (error) {
+    if (
+      utils
+        .getErrorMessage(error)
+        .includes('Resource not accessible by integration')
+    ) {
+      // In this case we can assume the token is the default GITHUB_TOKEN and
+      // therefore the user is 'github-actions[bot]'.
+      return 'github-actions[bot]'
+    } else {
+      throw error
+    }
+  }
+}
+
+type Reaction = {
+  id: number
+  content: string
+}
+
+async function getCommentReactionsForUser(
+  octokit,
+  owner: string,
+  repo: string,
+  commentId: number,
+  user: string
+): Promise<Reaction[]> {
+  const userReactions: Reaction[] = []
+  for await (const {data: reactions} of octokit.paginate.iterator(
+    octokit.rest.reactions.listForIssueComment,
+    {
+      owner,
+      repo,
+      comment_id: commentId,
+      per_page: 100
+    }
+  )) {
+    const filteredReactions: Reaction[] = reactions
+      .filter(reaction => reaction.user.login === user)
+      .map(reaction => {
+        return {id: reaction.id, content: reaction.content}
+      })
+    userReactions.push(...filteredReactions)
+  }
+  return userReactions
+}
+
+export async function createOrUpdateComment(
+  inputs: Inputs,
+  body: string
+): Promise<void> {
+  const [owner, repo] = inputs.repository.split('/')
+
+  const octokit = github.getOctokit(inputs.token)
+
+  const commentId = inputs.commentId
+    ? await updateComment(
+        octokit,
+        owner,
+        repo,
+        inputs.commentId,
+        body,
+        inputs.editMode,
+        inputs.appendSeparator
+      )
+    : await createComment(octokit, owner, repo, inputs.issueNumber, body)
+
+  core.setOutput('comment-id', commentId)
+
+  if (inputs.reactions) {
+    const reactionsSet = getReactionsSet(inputs.reactions)
+
+    // Remove reactions if reactionsEditMode is 'replace'
+    if (inputs.commentId && inputs.reactionsEditMode === 'replace') {
+      const authenticatedUser = await getAuthenticatedUser(octokit)
+      const userReactions = await getCommentReactionsForUser(
+        octokit,
+        owner,
+        repo,
+        commentId,
+        authenticatedUser
+      )
+      core.debug(inspect(userReactions))
+
+      const reactionsToRemove = userReactions.filter(
+        reaction => !reactionsSet.includes(reaction.content)
+      )
+      await removeReactions(octokit, owner, repo, commentId, reactionsToRemove)
+    }
+
+    await addReactions(octokit, owner, repo, commentId, reactionsSet)
+  }
+}

src/main.ts

@@ -0,0 +1,82 @@
+import * as core from '@actions/core'
+import {Inputs, createOrUpdateComment} from './create-or-update-comment'
+import {existsSync, readFileSync} from 'fs'
+import {inspect} from 'util'
+import * as utils from './utils'
+
+function getBody(inputs: Inputs) {
+  if (inputs.body) {
+    return inputs.body
+  } else if (inputs.bodyPath) {
+    return readFileSync(inputs.bodyPath, 'utf-8')
+  } else {
+    return ''
+  }
+}
+
+async function run(): Promise<void> {
+  try {
+    const inputs: Inputs = {
+      token: core.getInput('token'),
+      repository: core.getInput('repository'),
+      issueNumber: Number(core.getInput('issue-number')),
+      commentId: Number(core.getInput('comment-id')),
+      body: core.getInput('body'),
+      bodyPath: core.getInput('body-path') || core.getInput('body-file'),
+      editMode: core.getInput('edit-mode'),
+      appendSeparator: core.getInput('append-separator'),
+      reactions: utils.getInputAsArray('reactions'),
+      reactionsEditMode: core.getInput('reactions-edit-mode')
+    }
+    core.debug(`Inputs: ${inspect(inputs)}`)
+
+    if (!['append', 'replace'].includes(inputs.editMode)) {
+      throw new Error(`Invalid edit-mode '${inputs.editMode}'.`)
+    }
+
+    if (!['append', 'replace'].includes(inputs.reactionsEditMode)) {
+      throw new Error(
+        `Invalid reactions edit-mode '${inputs.reactionsEditMode}'.`
+      )
+    }
+
+    if (!['newline', 'space', 'none'].includes(inputs.appendSeparator)) {
+      throw new Error(`Invalid append-separator '${inputs.appendSeparator}'.`)
+    }
+
+    if (inputs.bodyPath && inputs.body) {
+      throw new Error("Only one of 'body' or 'body-path' can be set.")
+    }
+
+    if (inputs.bodyPath) {
+      if (!existsSync(inputs.bodyPath)) {
+        throw new Error(`File '${inputs.bodyPath}' does not exist.`)
+      }
+    }
+
+    const body = getBody(inputs)
+
+    if (inputs.commentId) {
+      if (!body && !inputs.reactions) {
+        throw new Error("Missing comment 'body', 'body-path', or 'reactions'.")
+      }
+    } else if (inputs.issueNumber) {
+      if (!body) {
+        throw new Error("Missing comment 'body' or 'body-path'.")
+      }
+    } else {
+      throw new Error("Missing either 'issue-number' or 'comment-id'.")
+    }
+
+    createOrUpdateComment(inputs, body)
+  } catch (error) {
+    core.debug(inspect(error))
+    const errMsg = utils.getErrorMessage(error)
+    core.setFailed(errMsg)
+    if (errMsg == 'Resource not accessible by integration') {
+      core.error(`See this action's readme for details about this error`)
+    }
+  }
+}
+
+run()

src/utils.ts

@@ -0,0 +1,20 @@
+import * as core from '@actions/core'
+
+export function getInputAsArray(
+  name: string,
+  options?: core.InputOptions
+): string[] {
+  return getStringAsArray(core.getInput(name, options))
+}
+
+export function getStringAsArray(str: string): string[] {
+  return str
+    .split(/[\n,]+/)
+    .map(s => s.trim())
+    .filter(x => x !== '')
+}
+
+export function getErrorMessage(error: unknown) {
+  if (error instanceof Error) return error.message
+  return String(error)
+}

tsconfig.json

@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "target": "es6",
+    "module": "commonjs",
+    "lib": [
+      "es6"
+    ],
+    "outDir": "./lib",
+    "rootDir": "./src",
+    "declaration": true,
+    "strict": true,
+    "noImplicitAny": false,
+    "esModuleInterop": true
+  },
+  "exclude": ["__test__", "lib", "node_modules"]
+}