feat: implement core code review extension

src/adapters/eslint.ts

@@ -0,0 +1,49 @@
+import * as vscode from 'vscode';
+import { ESLint } from 'eslint';
+import type { LinterAdapter, AdapterResult, LinterDiagnostic } from './adapter';
+
+export class ESLintAdapter implements LinterAdapter {
+  id = 'eslint';
+  supportedLanguages = ['javascript', 'typescript'];
+
+  isAvailable(): boolean {
+    return true;
+  }
+
+  async check(document: vscode.TextDocument, workingDir: string): Promise<AdapterResult> {
+    try {
+      const engine = new ESLint({ cwd: workingDir });
+      const results = await engine.lintText(document.getText(), {
+        filePath: document.fileName || 'untitled.ts',
+      });
+
+      const diagnostics: LinterDiagnostic[] = [];
+      for (const result of results) {
+        for (const msg of result.messages) {
+          if (msg.ruleId === null) { continue; }
+
+          diagnostics.push({
+            severity: msg.severity === 2 ? 'error' : 'warning',
+            ruleId: `eslint:${msg.ruleId}`,
+            message: msg.message,
+            range: new vscode.Range(
+              msg.line - 1,
+              msg.column - 1,
+              (msg.endLine ?? msg.line) - 1,
+              (msg.endColumn ?? msg.column) - 1
+            ),
+            suggestion: msg.fix?.text,
+          });
+        }
+      }
+
+      return { diagnostics, status: 'ok' };
+    } catch (error) {
+      return {
+        diagnostics: [],
+        status: 'execution-failed',
+        errorMessage: error instanceof Error ? error.message : String(error),
+      };
+    }
+  }
+}