diff --git a/.devcontainer/devcontainer-lock.json b/.devcontainer/devcontainer-lock.json
new file mode 100644
index 00000000..dcc3c970
--- /dev/null
+++ b/.devcontainer/devcontainer-lock.json
@@ -0,0 +1,14 @@
+{
+  "features": {
+    "ghcr.io/devcontainers/features/git:1": {
+      "version": "1.3.8",
+      "resolved": "ghcr.io/devcontainers/features/git@sha256:fd75977de13a9979000e0e78baf949adb0ca71d2398995fa22e0a36d7e7e7fe2",
+      "integrity": "sha256:fd75977de13a9979000e0e78baf949adb0ca71d2398995fa22e0a36d7e7e7fe2"
+    },
+    "ghcr.io/devcontainers/features/python:1": {
+      "version": "1.8.0",
+      "resolved": "ghcr.io/devcontainers/features/python@sha256:fbcad6955caeecc5ad3f7886baf652e25cba5225a6c4c2287c536de2e5607511",
+      "integrity": "sha256:fbcad6955caeecc5ad3f7886baf652e25cba5225a6c4c2287c536de2e5607511"
+    }
+  }
+}
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 00000000..e47c22c3
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,8 @@
+{
+  "name": "opencode",
+  "image": "oven/bun:1.3.4",
+  "features": {
+    "ghcr.io/devcontainers/features/python:1": {},
+    "ghcr.io/devcontainers/features/git:1": {}
+  }
+}
\ No newline at end of file
diff --git a/packages/core/src/ripgrep.ts b/packages/core/src/ripgrep.ts
index ac8ea52d..6f1dda8f 100644
--- a/packages/core/src/ripgrep.ts
+++ b/packages/core/src/ripgrep.ts
@@ -89,6 +89,27 @@ const failure = (message: string, cause?: unknown) => new Error({ message, cause
 const isInvalidPattern = (stderr: string) =>
   stderr.includes("regex parse error") || stderr.includes("error parsing regex")
 
+const handleExitCode = <A>(
+  code: number,
+  stderr: string,
+  pattern: string | undefined,
+  rows: readonly A[],
+) => {
+  if (pattern && code === 2 && isInvalidPattern(stderr)) {
+    return Effect.fail(new InvalidPatternError({ pattern, message: stderr.trim() }))
+  }
+
+  if (code !== 0 && code !== 1 && code !== 2) {
+    return Effect.fail(failure(stderr.trim() || `ripgrep failed with code ${code}`))
+  }
+
+  return Effect.succeed({
+    items: code === 1 ? [] : rows,
+    truncated: false,
+    partial: code === 2,
+  })
+}
+
 const layer = Layer.effect(
   Service,
   Effect.gen(function* () {
@@ -132,13 +153,7 @@ const layer = Layer.effect(
 
           const code = yield* handle.exitCode
           const stderr = yield* Fiber.join(stderrFiber)
-          if (input.pattern && code === 2 && isInvalidPattern(stderr)) {
-            return yield* new InvalidPatternError({ pattern: input.pattern, message: stderr.trim() })
-          }
-          if (code !== 0 && code !== 1 && code !== 2) {
-            return yield* failure(stderr.trim() || `ripgrep failed with code ${code}`)
-          }
-          return { items: code === 1 ? [] : rows, truncated: false, partial: code === 2 }
+          return yield* handleExitCode(code, stderr, input.pattern, rows)
         }),
       )
       const abortable = input.signal ? program.pipe(Effect.raceFirst(waitForAbort(input.signal))) : program
@@ -278,4 +293,4 @@ const layer = Layer.effect(
   }),
 )
 
-export const node = makeGlobalNode({ service: Service, layer: layer, deps: [RipgrepBinary.node, AppProcess.node] })
+export const node = makeGlobalNode({ service: Service, layer: layer, deps: [RipgrepBinary.node, AppProcess.node] })
\ No newline at end of file
diff --git a/packages/core/test/ripgrep.test.ts b/packages/core/test/ripgrep.test.ts
index 3abce1c0..9a3cd172 100644
--- a/packages/core/test/ripgrep.test.ts
+++ b/packages/core/test/ripgrep.test.ts
@@ -62,4 +62,20 @@ describe("Ripgrep", () => {
       (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()),
     ),
   )
+
+  it.live("reports an unparseable regex as an InvalidPatternError", () =>
+    Effect.acquireUseRelease(
+      Effect.promise(() => tmpdir()),
+      (tmp) =>
+        Effect.gen(function* () {
+          yield* Effect.promise(() => fs.writeFile(path.join(tmp.path, "file.txt"), "content\n"))
+
+          const error = yield* (yield* Ripgrep.Service)
+            .grep({ cwd: tmp.path, pattern: "(", limit: 10 })
+            .pipe(Effect.flip)
+          expect(error._tag).toBe("Ripgrep.InvalidPatternError")
+        }),
+      (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()),
+    ),
+  )
 })