initialize with first claude code interation

reporter/test_samurai_vitest_reporter.js

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+/**
+ * test_samurai_vitest_reporter.js
+ *
+ * Custom Vitest 2.x reporter for test-samurai.
+ *
+ * Emits one line per completed test case to stdout:
+ *   TSAMURAI_RESULT <json>
+ *
+ * Payload schema:
+ *   {
+ *     name:     string   -- Describe-hierarchy + test title joined with "/"
+ *     status:   "passed" | "failed" | "skipped"
+ *     file:     string | null  -- absolute file path
+ *     location: { line: number, column: number } | null
+ *     output:   string[]  -- error messages / stack traces (failures only)
+ *   }
+ */
+
+const RESULT_PREFIX = 'TSAMURAI_RESULT ';
+
+export default class TestSamuraiVitestReporter {
+  onTestCaseResult(testCase) {
+    const name = buildListingName(testCase);
+    const status = mapStatus(testCase.result?.state);
+    const output = buildOutput(testCase);
+
+    const payload = {
+      name,
+      status,
+      file: testCase.file?.filepath ?? null,
+      location: testCase.location ?? null,
+      output,
+    };
+
+    process.stdout.write(`${RESULT_PREFIX}${JSON.stringify(payload)}\n`);
+  }
+}
+
+/**
+ * Builds a slash-separated name from the describe hierarchy.
+ * E.g. describe('MyComponent') > describe('renders') > it('the button')
+ * → "MyComponent/renders/the button"
+ */
+function buildListingName(testCase) {
+  const parts = [testCase.name];
+  let current = testCase.parent;
+  while (current && current.type === 'suite') {
+    parts.unshift(current.name);
+    current = current.parent;
+  }
+  return parts.filter(Boolean).join('/');
+}
+
+/**
+ * Maps Vitest result states to test-samurai status strings.
+ */
+function mapStatus(state) {
+  const map = {
+    pass: 'passed',
+    fail: 'failed',
+    skip: 'skipped',
+    todo: 'skipped',
+  };
+  return map[state] ?? 'skipped';
+}
+
+/**
+ * Collects error messages and stack traces for failed tests.
+ */
+function buildOutput(testCase) {
+  const lines = [];
+  const errors = testCase.result?.errors ?? [];
+  for (const err of errors) {
+    if (typeof err.message === 'string' && err.message.length > 0) {
+      err.message.split('\n').forEach((line) => {
+        if (line !== '') lines.push(line);
+      });
+    }
+    if (typeof err.stack === 'string' && err.stack.length > 0) {
+      err.stack.split('\n').forEach((line) => {
+        if (line !== '') lines.push(line);
+      });
+    }
+  }
+  return lines;
+}