feat: PowerShell language support (.ps1/.psm1)

.github/dependabot.yml

@@ -5,6 +5,10 @@ updates:
     schedule:
       interval: weekly
     open-pull-requests-limit: 10
+    ignore:
+      # Upgrading this independently of the pinned tree-sitter runtime breaks
+      # peer resolution; see the overrides block in package.json.
+      - dependency-name: tree-sitter-typescript
 
   - package-ecosystem: github-actions
     directory: /

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
-          node-version: '20'
+          node-version: '22'
           cache: npm
 
       - name: Install dependencies

CHANGELOG.md

@@ -1,5 +1,26 @@
 # Changelog
 
+## Unreleased
+
+### Added
+
+- **PowerShell code graphs.** `.ps1` and `.psm1` files now contribute functions,
+  classes, methods, enums, calls, imports, and case-insensitive receiver bindings.
+  Dot-sourcing, `Import-Module`, and `using module` resolve local modules, while
+  UTF-16LE source from Windows PowerShell is decoded during graph ingestion.
+
+### Changed
+
+- **Bump the tree-sitter runtime to 0.25, and the Python and Go grammars to match.**
+  Groundwork for adding new language grammars that require the 0.25 runtime.
+  `tree-sitter-typescript@0.23.2` is still the latest release and declares a
+  `peerOptional tree-sitter@^0.21.0`, so an npm `overrides` entry pins its
+  nested `tree-sitter` dependency to the root one and lets the install resolve
+  cleanly. Syntax-node comparisons now use Tree-sitter's stable node IDs rather
+  than JavaScript object identity, whose behavior differs between runtime
+  versions. The minimum Node.js version is now 22.12, matching Commander 15 and
+  ensuring Windows installs can use Tree-sitter 0.25's prebuilt native module.
+
 ## 0.9.0
 
 ### Added

package.json

@@ -52,19 +52,25 @@
     "postinstall": "node scripts/postinstall.mjs"
   },
   "engines": {
-    "node": ">=20"
+    "node": ">=22.12.0"
   },
   "dependencies": {
     "@anthropic-ai/sdk": "^0.113.0",
     "commander": "^15.0.0",
     "dotenv": "^17.4.2",
     "gray-matter": "^4.0.3",
     "openai": "^6.45.0",
-    "tree-sitter": "^0.21.1",
-    "tree-sitter-go": "^0.23.4",
-    "tree-sitter-python": "^0.21.0",
+    "tree-sitter": "^0.25.0",
+    "tree-sitter-go": "^0.25.0",
+    "tree-sitter-powershell": "^0.26.4",
+    "tree-sitter-python": "^0.25.0",
     "tree-sitter-typescript": "^0.23.2"
   },
+  "overrides": {
+    "tree-sitter-typescript": {
+      "tree-sitter": "$tree-sitter"
+    }
+  },
   "devDependencies": {
     "@types/d3-force": "^3.0.10",
     "@types/node": "^26.1.0",

src/ask/ask.ts

@@ -32,7 +32,13 @@ import { resolveSymbol } from "../graph/traverse.js";
 import type { EdgeV1, GraphV1, NodeV1, Relation } from "../graph/types.js";
 import { rankScopesAndFuse } from "./fuse.js";
 import { personalizedPageRank } from "./graphrank.js";
+import { isTestPath } from "../util/testpath.js";
 import { readSourceFile } from "../util/source.js";
+
+// Re-exported for backward compatibility — moved to util/testpath.ts since
+// resolve.ts now consumes it too, as a hard graph-topology input rather than
+// just ask's own soft rank-penalty. See that file for the dual-contract note.
+export { isTestPath };
 import { counts, tokenize, type AskIndex, type AskIndexDoc } from "./index-file.js";
 
 export interface AskHit {
@@ -148,10 +154,9 @@ function loadCorpus(outDir: string): Corpus {
  * and land as the top hit (observed: an `ask` returning a `Test…` function first,
  * sending the agent to the wrong file). A multiplicative de-rank keeps tests in
  * the results (they still matter for "where are the tests") but below the real
- * definition. Covers Go (`_test.go`), JS/TS (`.test.` / `.spec.`), and test dirs. */
-export function isTestPath(path: string): boolean {
-  return /(^|\/)(tests?|__tests__|spec)\/|(_test|\.test|\.spec)\.[a-z]+$|(^|\/)(test_[^/]+|conftest)\.py$/i.test(path || "");
-}
+ * definition. `isTestPath` itself now lives in util/testpath.ts — imported
+ * and re-exported above so this stays the one place ask.ts's own callers (and
+ * test/ask.test.ts) look for it. */
 const TEST_RANK_PENALTY = 0.35;
 
 function score(

src/context/build.ts

@@ -42,6 +42,7 @@ export const CODE_EXTENSIONS = [
   ".py", ".go", ".rs", ".java", ".kt", ".scala",
   ".rb", ".php", ".c", ".h", ".cpp", ".hpp", ".cc",
   ".cs", ".swift", ".sql", ".sh", ".proto",
+  ".ps1", ".psm1", ".psd1",
 ];
 
 /** Char budget of summary text per synthesis call (keeps each call in-context). */