Migrate action to run oxlint instead of eslint

.github/workflows/reviewdog.yml

@@ -1,8 +1,8 @@
 name: reviewdog
 on: [pull_request]
 jobs:
-  eslint:
-    name: runner / eslint
+  oxlint:
+    name: runner / oxlint
     runs-on: ubuntu-latest
 
     strategy:
@@ -19,39 +19,41 @@ jobs:
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: ${{ matrix.node_version }}
-      - name: eslint-github-pr-check
+      - name: install oxlint for root fixtures
+        run: npm install --no-save oxlint
+      - name: oxlint-github-pr-check
         uses: ./
         with:
-          tool_name: eslint-github-pr-check
+          tool_name: oxlint-github-pr-check
           reporter: github-pr-check
           level: info
-          eslint_flags: "testdata/ --ignore-pattern /test-subproject/"
-      - name: eslint-github-check
+          oxlint_flags: "--config .oxlintrc.json testdata/"
+      - name: oxlint-github-check
         uses: ./
         with:
-          tool_name: eslint-github-check
+          tool_name: oxlint-github-check
           reporter: github-check
           level: warning
-          eslint_flags: "testdata/ --ignore-pattern /test-subproject/"
-      - name: eslint-github-pr-review
+          oxlint_flags: "--config .oxlintrc.json testdata/"
+      - name: oxlint-github-pr-review
         uses: ./
         with:
-          tool_name: eslint-github-pr-review
+          tool_name: oxlint-github-pr-review
           reporter: github-pr-review
-          eslint_flags: "testdata/ --ignore-pattern /test-subproject/"
-      - name: eslint-subproject-github-pr-review
+          oxlint_flags: "--config .oxlintrc.json testdata/"
+      - name: oxlint-subproject-github-pr-review
         uses: ./
         with:
-          tool_name: eslint-subproject-github-pr-review
+          tool_name: oxlint-subproject-github-pr-review
           reporter: github-pr-review
           workdir: ./test-subproject
-          eslint_flags: "sub-testdata/"
-      - name: eslint-subproject
+          oxlint_flags: "sub-testdata/"
+      - name: oxlint-subproject
         uses: ./
         with:
-          tool_name: eslint-subproject
+          tool_name: oxlint-subproject
           workdir: ./test-subproject
-          eslint_flags: "sub-testdata/"
+          oxlint_flags: "sub-testdata/"
           reporter: github-check
           level: warning
           filter_mode: file

.github/workflows/test.yml

@@ -12,7 +12,5 @@ jobs:
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: "24"
-          cache: "npm"
-      - run: npm ci
-      - name: Test eslint-formatter-rdjson
-        run: ./eslint-formatter-rdjson/test.sh
+      - name: Converter unit tests
+        run: node --test oxlint-to-rdjsonl.test.js

.oxlintrc.json

@@ -0,0 +1,12 @@
+{
+  "$schema": "https://raw.githubusercontent.com/oxc-project/oxc/main/npm/oxlint/configuration_schema.json",
+  "rules": {
+    "no-unused-vars": "error",
+    "no-var": "error",
+    "no-empty": "warn"
+  },
+  "ignorePatterns": [
+    "test-subproject/",
+    "node_modules/"
+  ]
+}

README.md

@@ -1,138 +1,114 @@
-# GitHub Action: Run eslint with reviewdog
+# GitHub Action: Run oxlint with reviewdog
 
 [![depup](https://github.com/reviewdog/action-eslint/workflows/depup/badge.svg)](https://github.com/reviewdog/action-eslint/actions?query=workflow%3Adepup)
 [![release](https://github.com/reviewdog/action-eslint/workflows/release/badge.svg)](https://github.com/reviewdog/action-eslint/actions?query=workflow%3Arelease)
 [![GitHub release (latest SemVer)](https://img.shields.io/github/v/release/reviewdog/action-eslint?logo=github&sort=semver)](https://github.com/reviewdog/action-eslint/releases)
-[![action-bumpr supported](https://img.shields.io/badge/bumpr-supported-ff69b4?logo=github&link=https://github.com/haya14busa/action-bumpr)](https://github.com/haya14busa/action-bumpr)
-[![Used-by counter](https://img.shields.io/endpoint?url=https://haya14busa.github.io/github-used-by/data/reviewdog/action-eslint/shieldsio.json)](https://github.com/haya14busa/github-used-by/tree/main/repo/reviewdog/action-eslint)
 
-This action runs [eslint](https://github.com/eslint/eslint) with
+This action runs [oxlint](https://oxc.rs/docs/guide/usage/linter.html) with
 [reviewdog](https://github.com/reviewdog/reviewdog) on pull requests to improve
 code review experience.
 
-[![github-pr-check sample](https://user-images.githubusercontent.com/3797062/65439130-a6043b80-de61-11e9-98b5-bd9567e184b0.png)](https://github.com/reviewdog/action-eslint/pull/1)
-![eslint reviewdog rdjson demo](https://user-images.githubusercontent.com/3797062/97085944-87233a80-165b-11eb-94a8-0a47d5e24905.png)
+## Migrating from older versions of this action (eslint)
+
+Earlier versions of this action ran eslint. Starting with the oxlint rewrite,
+the following breaking changes apply:
+
+- `eslint_flags` input → `oxlint_flags`.
+- `node_options` input removed (oxlint is a native binary; `NODE_OPTIONS` has no effect).
+- `tool_name` default changed from `eslint` to `oxlint`.
+- You must list `oxlint` (not `eslint`) in your project's `devDependencies` (or equivalent).
 
 ## Inputs
 
 ### `github_token`
-
-**Required**. Default is `${{ github.token }}`.
+**Required.** Default `${{ github.token }}`.
 
 ### `level`
-
-Optional. Report level for reviewdog \[`info`,`warning`,`error`\].
-It's same as `-level` flag of reviewdog.
+Optional. Report level for reviewdog (`info`, `warning`, `error`). Same as reviewdog's `-level` flag.
 
 ### `reporter`
-
-Reporter of reviewdog command \[`github-pr-check`,`github-check`,`github-pr-review`\].
-Default is `github-pr-review`.
-It's same as `-reporter` flag of reviewdog.
-
-`github-pr-review` can use Markdown and add a link to rule page in reviewdog reports.
+Optional. `github-pr-check`, `github-check`, or `github-pr-review`. Default `github-pr-review`.
 
 ### `tool_name`
-
-Optional. Tool name to use for reviewdog reporter. Default is `eslint`.
-This becomes the check/run name on GitHub (e.g., for `github-check`/`github-pr-check`) and the tool label in review comments.
-Useful when running in a matrix to distinguish checks, e.g. `eslint-${{ matrix.node_version }}`.
+Optional. Default `oxlint`. Becomes the check/run name on GitHub and the tool label in review comments.
 
 ### `filter_mode`
-
-Optional. Filtering mode for the reviewdog command \[`added`,`diff_context`,`file`,`nofilter`\].
-Default is added.
+Optional. `added`, `diff_context`, `file`, or `nofilter`. Default `added`.
 
 ### `fail_level`
-
-Optional. If set to `none`, always use exit code 0 for reviewdog. Otherwise, exit code 1 for reviewdog if it finds at least 1 issue with severity greater than or equal to the given level.
-Possible values: [`none`, `any`, `info`, `warning`, `error`]
-Default is `none`.
+Optional. `none`, `any`, `info`, `warning`, or `error`. Default `none`.
 
 ### `fail_on_error`
-
-Deprecated, use `fail_level` instead.
-Optional. Exit code for reviewdog when errors are found \[`true`,`false`\]
-Default is `false`.
+Deprecated. Use `fail_level`.
 
 ### `reviewdog_flags`
+Optional. Additional flags passed to reviewdog.
 
-Optional. Additional reviewdog flags
-
-### `eslint_flags`
-
-Optional. Flags and args of eslint command. Default: '.'
+### `oxlint_flags`
+Optional. Flags and args for the `oxlint` command. Default `.`.
 
 ### `workdir`
-
-Optional. The directory from which to look for and run eslint. Default '.'
-
-### `node_options`
-
-Optional. The NODE_OPTIONS environment variable to use with eslint. Default is ''.
+Optional. Directory from which to run oxlint. Default `.`.
 
 ## Example usage
 
-You also need to install [eslint](https://github.com/eslint/eslint).
+Install oxlint in your project:
 
 ```shell
-# Example
-$ npm install eslint -D
+npm install --save-dev oxlint
 ```
 
-You can create [eslint
-config](https://eslint.org/docs/user-guide/configuring)
-and this action uses that config too.
+See the [oxlint configuration docs](https://oxc.rs/docs/guide/usage/linter/config.html)
+for creating a `.oxlintrc.json`. This action uses that config automatically.
 
-### [.github/workflows/reviewdog.yml](.github/workflows/reviewdog.yml)
+### `.github/workflows/reviewdog.yml`
 
-```yml
+```yaml
 name: reviewdog
 on: [pull_request]
 jobs:
-  eslint:
-    name: runner / eslint
+  oxlint:
+    name: runner / oxlint
     runs-on: ubuntu-latest
     permissions:
       contents: read
       pull-requests: write
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: reviewdog/action-eslint@2fee6dd72a5419ff4113f694e2068d2a03bb35dd # v1.33.2
+      - uses: actions/checkout@v4
+      - uses: reviewdog/action-eslint@vX
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
-          reporter: github-pr-review # Change reporter.
-          eslint_flags: "src/"
+          reporter: github-pr-review
+          oxlint_flags: "src/"
 ```
 
-You can also set up node and eslint manually like below.
+You can also set up Node and oxlint manually:
 
-```yml
+```yaml
 name: reviewdog
 on: [pull_request]
 jobs:
-  eslint:
-    name: runner / eslint
+  oxlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - uses: actions/setup-node@cdca7365b2dadb8aad0a33bc7601856ffabcc48e # v4.3.0
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: "20"
-      - run: yarn install
-      - uses: reviewdog/action-eslint@2fee6dd72a5419ff4113f694e2068d2a03bb35dd # v1.33.2
+      - run: npm install
+      - uses: reviewdog/action-eslint@vX
         with:
           reporter: github-check
-          eslint_flags: "src/"
+          oxlint_flags: "src/"
 ```
 
 ### Matrix example with unique tool name
 
-```yml
+```yaml
 name: reviewdog
 on: [pull_request]
 jobs:
-  eslint:
+  oxlint:
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -142,10 +118,10 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
-      - uses: reviewdog/action-eslint@v1
+      - uses: reviewdog/action-eslint@vX
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           reporter: github-check
-          tool_name: eslint-node-${{ matrix.node }}
-          eslint_flags: "src/"
+          tool_name: oxlint-node-${{ matrix.node }}
+          oxlint_flags: "src/"
 ```

action.yml

@@ -1,5 +1,5 @@
-name: 'Run eslint with reviewdog'
-description: '🐶 Run eslint with reviewdog on pull requests to improve code review experience.'
+name: 'Run oxlint with reviewdog'
+description: '🐶 Run oxlint with reviewdog on pull requests to improve code review experience.'
 author: 'haya14busa (reviewdog)'
 inputs:
   github_token:
@@ -41,42 +41,35 @@ inputs:
     description: 'Additional reviewdog flags'
     required: false
     default: ''
-  eslint_flags:
-    description: "flags and args of eslint command. Default: '.'"
+  oxlint_flags:
+    description: "flags and args of oxlint command. Default: '.'"
     required: false
     default: '.'
   workdir:
-    description: "The directory from which to look for and run eslint. Default '.'"
+    description: "The directory from which to look for and run oxlint. Default '.'"
     required: false
     default: '.'
   tool_name:
     description: 'Tool name to use for reviewdog reporter'
     required: false
-    default: 'eslint'
-  node_options:
-    description: 'NODE_OPTIONS for running eslint'
-    required: false
-    default: ''
+    default: 'oxlint'
 runs:
   using: 'composite'
   steps:
     - run: $GITHUB_ACTION_PATH/script.sh
       shell: bash
       env:
         REVIEWDOG_VERSION: v0.21.0
-        # INPUT_<VARIABLE_NAME> is not available in Composite run steps
-        # https://github.community/t/input-variable-name-is-not-available-in-composite-run-steps/127611
         INPUT_GITHUB_TOKEN: ${{ inputs.github_token }}
         INPUT_LEVEL: ${{ inputs.level }}
         INPUT_REPORTER: ${{ inputs.reporter }}
         INPUT_FILTER_MODE: ${{ inputs.filter_mode }}
         INPUT_FAIL_LEVEL: ${{ inputs.fail_level }}
         INPUT_FAIL_ON_ERROR: ${{ inputs.fail_on_error }}
         INPUT_REVIEWDOG_FLAGS: ${{ inputs.reviewdog_flags }}
-        INPUT_ESLINT_FLAGS: ${{ inputs.eslint_flags }}
+        INPUT_OXLINT_FLAGS: ${{ inputs.oxlint_flags }}
         INPUT_WORKDIR: ${{ inputs.workdir }}
         INPUT_TOOL_NAME: ${{ inputs.tool_name }}
-        NODE_OPTIONS: ${{ inputs.node_options }}
 branding:
   icon: 'alert-octagon'
   color: 'blue'