feat: expand trailing / in input globs to /**

Input patterns like `"src/"` are now treated as `"src/**"`, matching all
files recursively under that directory. This applies to both positive and
negative globs.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: branchseer

crates/vite_task_bin/tests/e2e_snapshots/fixtures/inputs-cache-test/snapshots.toml

@@ -201,7 +201,38 @@ steps = [
   "vp run check-fspy-env-without-auto",
 ]
 
-# 8. Folder path as input: inputs: ["src"]
+# 8. Trailing slash input: inputs: ["src/"]
+# - Trailing `/` is expanded to `/**`, matching all files under that directory
+# - Direct and nested file changes trigger cache invalidation
+# - Files outside the directory do NOT trigger cache invalidation
+[[e2e]]
+name = "folder slash input - miss on direct and nested file changes"
+steps = [
+  "vp run folder-slash-input",
+  # Modify a direct file in src/
+  "replace-file-content src/main.ts initial modified",
+  # Cache miss: direct file changed
+  "vp run folder-slash-input",
+  # Reset and run again to re-establish cache
+  "replace-file-content src/main.ts modified initial",
+  "vp run folder-slash-input",
+  # Modify a nested file in src/sub/
+  "replace-file-content src/sub/nested.ts initial modified",
+  # Cache miss: nested file changed
+  "vp run folder-slash-input",
+]
+
+[[e2e]]
+name = "folder slash input - hit on file outside directory"
+steps = [
+  "vp run folder-slash-input",
+  # Modify a file outside src/
+  "replace-file-content test/main.test.ts outside modified",
+  # Cache hit: file not under src/
+  "vp run folder-slash-input",
+]
+
+# 9. Folder path as input: inputs: ["src"]
 # - A bare directory name matches nothing (directories are not files)
 # - File changes inside the folder should NOT trigger cache invalidation
 [[e2e]]

crates/vite_task_bin/tests/e2e_snapshots/fixtures/inputs-cache-test/snapshots/folder slash input - hit on file outside directory.snap

@@ -0,0 +1,15 @@
+---
+source: crates/vite_task_bin/tests/e2e_snapshots/main.rs
+expression: e2e_outputs
+---
+> vp run folder-slash-input
+$ print-file src/main.ts
+export const main = 'initial';
+> replace-file-content test/main.test.ts outside modified
+
+> vp run folder-slash-input
+$ print-file src/main.ts ✓ cache hit, replaying
+export const main = 'initial';
+
+---
+[vp run] cache hit, <duration> saved.

crates/vite_task_bin/tests/e2e_snapshots/fixtures/inputs-cache-test/snapshots/folder slash input - miss on direct and nested file changes.snap

@@ -0,0 +1,22 @@
+---
+source: crates/vite_task_bin/tests/e2e_snapshots/main.rs
+expression: e2e_outputs
+---
+> vp run folder-slash-input
+$ print-file src/main.ts
+export const main = 'initial';
+> replace-file-content src/main.ts initial modified
+
+> vp run folder-slash-input
+$ print-file src/main.ts ✗ cache miss: content of input 'src/main.ts' changed, executing
+export const main = 'modified';
+> replace-file-content src/main.ts modified initial
+
+> vp run folder-slash-input
+$ print-file src/main.ts ✗ cache miss: content of input 'src/main.ts' changed, executing
+export const main = 'initial';
+> replace-file-content src/sub/nested.ts initial modified
+
+> vp run folder-slash-input
+$ print-file src/main.ts ✗ cache miss: content of input 'src/sub/nested.ts' changed, executing
+export const main = 'initial';

crates/vite_task_bin/tests/e2e_snapshots/fixtures/inputs-cache-test/src/sub/nested.ts

@@ -0,0 +1 @@
+export const nested = 'initial';

crates/vite_task_bin/tests/e2e_snapshots/fixtures/inputs-cache-test/vite-task.json

@@ -49,6 +49,11 @@
       "command": "print-file src/main.ts",
       "inputs": ["src"],
       "cache": true
+    },
+    "folder-slash-input": {
+      "command": "print-file src/main.ts",
+      "inputs": ["src/"],
+      "cache": true
     }
   }
 }

crates/vite_task_graph/src/config/mod.rs

@@ -194,6 +194,15 @@ fn resolve_glob_to_workspace_relative(
     package_dir: &AbsolutePath,
     workspace_root: &AbsolutePath,
 ) -> Result<Str, ResolveTaskConfigError> {
+    // A trailing `/` is shorthand for all files under that directory
+    let expanded;
+    let pattern = if let Some(prefix) = pattern.strip_suffix('/') {
+        expanded = vite_str::format!("{prefix}/**");
+        expanded.as_str()
+    } else {
+        pattern
+    };
+
     let glob = wax::Glob::new(pattern).map_err(|source| ResolveTaskConfigError::InvalidGlob {
         pattern: Str::from(pattern),
         source: Box::new(source),

crates/vite_task_plan/tests/plan_snapshots/fixtures/inputs-trailing-slash/package.json

@@ -0,0 +1,3 @@
+{
+  "name": "test"
+}

crates/vite_task_plan/tests/plan_snapshots/fixtures/inputs-trailing-slash/snapshots.toml

@@ -0,0 +1 @@
+# Test that trailing `/` in glob patterns is expanded to `/**`

crates/vite_task_plan/tests/plan_snapshots/fixtures/inputs-trailing-slash/snapshots/task graph.snap

@@ -0,0 +1,45 @@
+---
+source: crates/vite_task_plan/tests/plan_snapshots/main.rs
+expression: task_graph_json
+input_file: crates/vite_task_plan/tests/plan_snapshots/fixtures/inputs-trailing-slash
+---
+[
+  {
+    "key": [
+      "<workspace>/",
+      "build"
+    ],
+    "node": {
+      "task_display": {
+        "package_name": "test",
+        "task_name": "build",
+        "package_path": "<workspace>/"
+      },
+      "resolved_config": {
+        "command": "echo build",
+        "resolved_options": {
+          "cwd": "<workspace>/",
+          "cache_config": {
+            "env_config": {
+              "fingerprinted_envs": [],
+              "pass_through_envs": [
+                "<default pass-through envs>"
+              ]
+            },
+            "input_config": {
+              "includes_auto": false,
+              "positive_globs": [
+                "src/**"
+              ],
+              "negative_globs": [
+                "dist/**"
+              ]
+            }
+          }
+        }
+      },
+      "source": "TaskConfig"
+    },
+    "neighbors": []
+  }
+]

crates/vite_task_plan/tests/plan_snapshots/fixtures/inputs-trailing-slash/vite-task.json

@@ -0,0 +1,9 @@
+{
+  "tasks": {
+    "build": {
+      "command": "echo build",
+      "inputs": ["src/", "!dist/"],
+      "cache": true
+    }
+  }
+}