Add reporter from @arthurfiorette

packages/knip/src/reporters/githubActions.ts

@@ -0,0 +1,66 @@
+import core from '@actions/core';
+import type { ReporterOptions } from '../types/issues.js';
+
+export const ISSUE_TYPES = [
+  // must be _files
+  '_files',
+  'dependencies',
+  'devDependencies',
+  'optionalPeerDependencies',
+  'unlisted',
+  'binaries',
+  'unresolved',
+  'exports',
+  'nsExports',
+  'types',
+  'nsTypes',
+  'enumMembers',
+  'classMembers',
+  'duplicates',
+] as const;
+
+const ISSUE_TYPE_TITLE = {
+  files: 'Unused files',
+  _files: 'Unused files',
+  dependencies: 'Unused dependencies',
+  devDependencies: 'Unused devDependencies',
+  optionalPeerDependencies: 'Referenced optional peerDependencies',
+  unlisted: 'Unlisted dependencies',
+  binaries: 'Unlisted binaries',
+  unresolved: 'Unresolved imports',
+  exports: 'Unused exports',
+  nsExports: 'Exports in used namespace',
+  types: 'Unused exported types',
+  nsTypes: 'Exported types in used namespace',
+  enumMembers: 'Unused exported enum members',
+  classMembers: 'Unused exported class members',
+  duplicates: 'Duplicate exports',
+};
+
+export default (options: ReporterOptions) => {
+  for (const issueName of ISSUE_TYPES) {
+    const issue = options.issues[issueName];
+
+    for (const file of Object.keys(issue)) {
+      const issueSet = issue[file];
+
+      for (const issueKey of Object.keys(issueSet)) {
+        const issueItem = issueSet[issueKey];
+
+        if (issueItem.isFixed || issueItem.severity === 'off') {
+          continue;
+        }
+
+        const log = issueItem.severity === 'error' ? core.error : core.warning;
+
+        log(ISSUE_TYPE_TITLE[issueItem.type], {
+          file: file,
+          startLine: issueItem.line,
+          endLine: issueItem.line,
+          endColumn: issueItem.col,
+          startColumn: issueItem.col,
+        });
+      }
+    }
+  }
+};

packages/knip/src/reporters/index.ts

@@ -2,6 +2,7 @@ import codeclimate from './codeclimate.js';
 import codeowners from './codeowners.js';
 import compact from './compact.js';
 import disclosure from './disclosure.js';
+import githubActions from './githubActions.js';
 import json from './json.js';
 import markdown from './markdown.js';
 import symbols from './symbols.js';
@@ -14,4 +15,5 @@ export default {
   codeclimate,
   json,
   markdown,
+  githubActions,
 };