Fix lint errors and formatting

- Remove unused variables
- Add .eslintignore to exclude dist/
- Apply prettier formatting
- Fix all pre-commit hook issues

.eslintignore

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

.eslintrc.js

@@ -13,4 +13,4 @@ module.exports = {
     'no-console': 'off',
     'no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
   },
-};
+};

.github/workflows/ci.yml

@@ -79,7 +79,7 @@ jobs:
           fi
           echo "Breaking changes detected: ${{ steps.test-breaking.outputs.breaking-count }}"
           echo "Compatible changes: ${{ steps.test-breaking.outputs.compatible-count }}"
-          
+
           # Verify counts match what we expect
           if [ "${{ steps.test-breaking.outputs.breaking-count }}" != "3" ]; then
             echo "Expected 3 breaking changes, got ${{ steps.test-breaking.outputs.breaking-count }}"
@@ -109,7 +109,7 @@ jobs:
             exit 1
           fi
           echo "Compatible changes: ${{ steps.test-safe.outputs.compatible-count }}"
-          
+
           # Verify count matches what we expect
           if [ "${{ steps.test-safe.outputs.compatible-count }}" != "3" ]; then
             echo "Expected 3 compatible changes, got ${{ steps.test-safe.outputs.compatible-count }}"
@@ -141,4 +141,4 @@ jobs:
           if [ "${{ steps.test-clean.outputs.compatible-count }}" != "0" ]; then
             echo "Expected 0 compatible changes, got ${{ steps.test-clean.outputs.compatible-count }}"
             exit 1
-          fi
+          fi

.github/workflows/release.yml

@@ -13,18 +13,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      
+
       - uses: actions/setup-node@v4
         with:
           node-version: '20'
           cache: 'npm'
-      
+
       - name: Install dependencies
         run: npm ci
-      
+
       - name: Build
         run: npm run build
-      
+
       - name: Create Release
         uses: actions/create-release@v1
         env:
@@ -34,13 +34,13 @@ jobs:
           release_name: ${{ github.ref }}
           body: |
             ## What's Changed
-            
+
             See the [commit history](https://github.com/${{ github.repository }}/compare/${{ github.event.before }}...${{ github.ref }}) for details.
-            
+
             ## Usage
-            
+
             ```yaml
             - uses: ${{ github.repository }}@${{ github.ref }}
             ```
           draft: false
-          prerelease: false
+          prerelease: false

.pre-commit-config.yaml

@@ -20,4 +20,4 @@ repos:
     hooks:
       - id: eslint
         files: \.js$
-        args: ['--fix']
+        args: ['--fix']

.prettierrc

@@ -4,4 +4,4 @@
   "tabWidth": 2,
   "trailingComma": "es5",
   "printWidth": 100
-}
+}

action.yml

@@ -33,4 +33,4 @@ outputs:
 
 runs:
   using: 'node20'
-  main: 'dist/index.js'
+  main: 'dist/index.js'

index.js

@@ -17,7 +17,7 @@ async function run() {
 
     // Determine refs to compare
     let oldRef, newRef;
-    
+
     // Check if INPUT_OLD and INPUT_NEW env vars are set (for testing)
     if (process.env.INPUT_OLD && process.env.INPUT_NEW) {
       oldRef = process.env.INPUT_OLD;
@@ -34,12 +34,14 @@ async function run() {
       newRef = context.payload.after;
       core.info(`Comparing commits ${oldRef} with ${newRef}`);
     } else {
-      throw new Error('Unable to determine commits to compare. This action should be run on pull_request or push events.');
+      throw new Error(
+        'Unable to determine commits to compare. This action should be run on pull_request or push events.'
+      );
     }
 
     // Run apidiff
     const output = await runApidiff({ workingDirectory, oldRef, newRef });
-    
+
     // Parse output
     const parsedChanges = parseApidiffOutput(output);
 
@@ -62,11 +64,10 @@ async function run() {
     } else {
       core.info('No breaking API changes detected');
     }
-
   } catch (error) {
     core.setFailed(`Action failed: ${error.message}`);
   }
 }
 
 // Run the action
-run();
+run();

lib/apidiff.js

@@ -18,24 +18,22 @@ async function runApidiff({ workingDirectory, oldRef, newRef }) {
 
   // Create export files if comparing directories
   const isDirectory = !oldRef.match(/^[0-9a-f]{7,40}$/i);
-  
+
   if (isDirectory) {
     // For directories, we need to create export files first
     const oldDir = path.join(workingDirectory, oldRef);
     const newDir = path.join(workingDirectory, newRef);
-    const oldExportPath = path.join(oldDir, 'apidiff.export');
-    const newExportPath = path.join(newDir, 'apidiff.export');
-    
+
     // Create export for old version
     await exec.exec('apidiff', ['-w', 'apidiff.export', '.'], {
-      cwd: oldDir
+      cwd: oldDir,
     });
-    
+
     // Create export for new version
     await exec.exec('apidiff', ['-w', 'apidiff.export', '.'], {
-      cwd: newDir
+      cwd: newDir,
     });
-    
+
     // Now compare the export files
     let output = '';
     let errorOutput = '';
@@ -48,16 +46,16 @@ async function runApidiff({ workingDirectory, oldRef, newRef }) {
         },
         stderr: (data) => {
           errorOutput += data.toString();
-        }
+        },
       },
-      ignoreReturnCode: true
+      ignoreReturnCode: true,
     };
 
     // Compare using relative paths from working directory
     const relativeOldPath = path.join(oldRef, 'apidiff.export');
     const relativeNewPath = path.join(newRef, 'apidiff.export');
     const exitCode = await exec.exec('apidiff', [relativeOldPath, relativeNewPath], options);
-    
+
     if (errorOutput) {
       core.warning(`apidiff stderr: ${errorOutput}`);
     }
@@ -82,9 +80,9 @@ async function runApidiff({ workingDirectory, oldRef, newRef }) {
         },
         stderr: (data) => {
           errorOutput += data.toString();
-        }
+        },
       },
-      ignoreReturnCode: true
+      ignoreReturnCode: true,
     };
 
     const exitCode = await exec.exec('apidiff', [oldRef, newRef], options);
@@ -116,14 +114,14 @@ async function installApidiff() {
     // apidiff not found, install it
     core.info('Installing apidiff...');
     await exec.exec('go', ['install', 'golang.org/x/exp/cmd/apidiff@latest']);
-    
+
     // Add Go bin to PATH
     const goPath = process.env.GOPATH || path.join(process.env.HOME, 'go');
     const goBin = path.join(goPath, 'bin');
     core.addPath(goBin);
-    
+
     core.info('apidiff installed successfully');
   }
 }
 
-module.exports = { runApidiff };
+module.exports = { runApidiff };

lib/commenter.js

@@ -31,12 +31,10 @@ async function createOrUpdateComment({ token, body }) {
     const { data: comments } = await octokit.rest.issues.listComments({
       owner,
       repo,
-      issue_number: prNumber
+      issue_number: prNumber,
     });
 
-    const existingComment = comments.find(comment => 
-      comment.body?.includes(COMMENT_TAG)
-    );
+    const existingComment = comments.find((comment) => comment.body?.includes(COMMENT_TAG));
 
     if (existingComment) {
       // Update existing comment
@@ -44,7 +42,7 @@ async function createOrUpdateComment({ token, body }) {
         owner,
         repo,
         comment_id: existingComment.id,
-        body: commentBody
+        body: commentBody,
       });
       core.info(`Updated existing comment: ${existingComment.html_url}`);
     } else {
@@ -53,7 +51,7 @@ async function createOrUpdateComment({ token, body }) {
         owner,
         repo,
         issue_number: prNumber,
-        body: commentBody
+        body: commentBody,
       });
       core.info(`Created new comment: ${newComment.html_url}`);
     }
@@ -63,4 +61,4 @@ async function createOrUpdateComment({ token, body }) {
   }
 }
 
-module.exports = { createOrUpdateComment };
+module.exports = { createOrUpdateComment };

lib/parser.js

@@ -10,7 +10,7 @@ function parseApidiffOutput(output) {
     hasBreakingChanges: false,
     breakingCount: 0,
     compatibleCount: 0,
-    packages: []
+    packages: [],
   };
 
   if (!output || output.trim() === '') {
@@ -19,14 +19,14 @@ function parseApidiffOutput(output) {
 
   // Split into lines
   const lines = output.split('\n');
-  
+
   let currentPackage = {
     name: 'default',
     breaking: [],
-    compatible: []
+    compatible: [],
   };
   result.packages.push(currentPackage);
-  
+
   let inCompatibleSection = false;
   let inIncompatibleSection = false;
 
@@ -55,10 +55,10 @@ function parseApidiffOutput(output) {
     // Parse changes (they start with "- ")
     if ((inCompatibleSection || inIncompatibleSection) && trimmedLine.startsWith('- ')) {
       const changeMessage = trimmedLine.substring(2).trim();
-      
+
       const change = {
         message: changeMessage,
-        compatible: inCompatibleSection
+        compatible: inCompatibleSection,
       };
 
       if (inCompatibleSection) {
@@ -72,8 +72,8 @@ function parseApidiffOutput(output) {
   }
 
   // Clean up empty packages
-  result.packages = result.packages.filter(pkg => 
-    pkg.breaking.length > 0 || pkg.compatible.length > 0
+  result.packages = result.packages.filter(
+    (pkg) => pkg.breaking.length > 0 || pkg.compatible.length > 0
   );
 
   // If no packages with changes, return empty packages array
@@ -81,7 +81,9 @@ function parseApidiffOutput(output) {
     result.packages = [];
   }
 
-  core.info(`Parsed ${result.breakingCount} breaking changes and ${result.compatibleCount} compatible changes`);
+  core.info(
+    `Parsed ${result.breakingCount} breaking changes and ${result.compatibleCount} compatible changes`
+  );
 
   return result;
 }
@@ -112,7 +114,7 @@ function formatChangesAsMarkdown(parsedChanges) {
 
   // Details by package
   markdown += '## Details\n\n';
-  
+
   for (const pkg of parsedChanges.packages) {
     if (pkg.name !== 'default') {
       markdown += `### \`${pkg.name}\`\n\n`;
@@ -138,4 +140,4 @@ function formatChangesAsMarkdown(parsedChanges) {
   return markdown;
 }
 
-module.exports = { parseApidiffOutput, formatChangesAsMarkdown };
+module.exports = { parseApidiffOutput, formatChangesAsMarkdown };

package.json

@@ -1,30 +1,11 @@
 {
-  "name": "apidiff-action",
-  "version": "1.0.0",
-  "description": "GitHub Action for detecting breaking API changes in Go code",
-  "main": "index.js",
-  "scripts": {
-    "build": "ncc build index.js -o dist",
-    "test": "jest",
-    "lint": "eslint .",
-    "format": "prettier --write .",
-    "prepare": "husky install"
-  },
-  "keywords": [
-    "github-action",
-    "go",
-    "golang",
-    "api",
-    "compatibility",
-    "breaking-changes"
-  ],
   "author": "Jason Hall",
-  "license": "Apache-2.0",
   "dependencies": {
     "@actions/core": "^1.10.1",
     "@actions/exec": "^1.1.1",
     "@actions/github": "^6.0.0"
   },
+  "description": "GitHub Action for detecting breaking API changes in Go code",
   "devDependencies": {
     "@types/jest": "^29.5.11",
     "@vercel/ncc": "^0.38.1",
@@ -35,6 +16,27 @@
     "lint-staged": "^15.2.0",
     "prettier": "^3.1.1"
   },
+  "jest": {
+    "collectCoverage": true,
+    "coverageThreshold": {
+      "global": {
+        "branches": 80,
+        "functions": 80,
+        "lines": 80,
+        "statements": 80
+      }
+    },
+    "testEnvironment": "node"
+  },
+  "keywords": [
+    "github-action",
+    "go",
+    "golang",
+    "api",
+    "compatibility",
+    "breaking-changes"
+  ],
+  "license": "Apache-2.0",
   "lint-staged": {
     "*.js": [
       "eslint --fix",
@@ -44,16 +46,14 @@
       "prettier --write"
     ]
   },
-  "jest": {
-    "testEnvironment": "node",
-    "collectCoverage": true,
-    "coverageThreshold": {
-      "global": {
-        "branches": 80,
-        "functions": 80,
-        "lines": 80,
-        "statements": 80
-      }
-    }
-  }
-}
+  "main": "index.js",
+  "name": "apidiff-action",
+  "scripts": {
+    "build": "ncc build index.js -o dist",
+    "format": "prettier --write .",
+    "lint": "eslint .",
+    "prepare": "husky install",
+    "test": "jest"
+  },
+  "version": "1.0.0"
+}

test/parser.test.js

@@ -86,7 +86,7 @@ describe('formatChangesAsMarkdown', () => {
       hasBreakingChanges: false,
       breakingCount: 0,
       compatibleCount: 0,
-      packages: []
+      packages: [],
     };
 
     const markdown = formatChangesAsMarkdown(parsedChanges);
@@ -98,11 +98,13 @@ describe('formatChangesAsMarkdown', () => {
       hasBreakingChanges: true,
       breakingCount: 1,
       compatibleCount: 0,
-      packages: [{
-        name: 'default',
-        breaking: [{ message: 'Foo: removed', compatible: false }],
-        compatible: []
-      }]
+      packages: [
+        {
+          name: 'default',
+          breaking: [{ message: 'Foo: removed', compatible: false }],
+          compatible: [],
+        },
+      ],
     };
 
     const markdown = formatChangesAsMarkdown(parsedChanges);
@@ -118,14 +120,16 @@ describe('formatChangesAsMarkdown', () => {
       hasBreakingChanges: false,
       breakingCount: 0,
       compatibleCount: 2,
-      packages: [{
-        name: 'default',
-        breaking: [],
-        compatible: [
-          { message: 'Bar: added', compatible: true },
-          { message: 'Baz: added', compatible: true }
-        ]
-      }]
+      packages: [
+        {
+          name: 'default',
+          breaking: [],
+          compatible: [
+            { message: 'Bar: added', compatible: true },
+            { message: 'Baz: added', compatible: true },
+          ],
+        },
+      ],
     };
 
     const markdown = formatChangesAsMarkdown(parsedChanges);
@@ -134,4 +138,4 @@ describe('formatChangesAsMarkdown', () => {
     expect(markdown).toContain('- Bar: added');
     expect(markdown).toContain('- Baz: added');
   });
-});
+});

testdata/break/new/go.mod

@@ -1,3 +1,3 @@
 module example.com/test
 
-go 1.21
+go 1.21

testdata/break/old/go.mod

@@ -1,3 +1,3 @@
 module example.com/test
 
-go 1.21
+go 1.21

testdata/clean/new/go.mod

@@ -1,3 +1,3 @@
 module example.com/test
 
-go 1.21
+go 1.21

testdata/clean/old/go.mod

@@ -1,3 +1,3 @@
 module example.com/test
 
-go 1.21
+go 1.21

testdata/safe/new/go.mod

@@ -1,3 +1,3 @@
 module example.com/test
 
-go 1.21
+go 1.21

testdata/safe/old/go.mod

@@ -1,3 +1,3 @@
 module example.com/test
 
-go 1.21
+go 1.21