perf: use single transaction for AST node insertion (3.6s → 350ms)

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file. See [commit-and-tag-version](https://github.com/absolute-version/commit-and-tag-version) for commit guidelines.
 
+## [3.0.3](https://github.com/optave/codegraph/compare/v3.0.2...v3.0.3) (2026-03-04)
+
+### Performance
+
+* **ast:** use single transaction for AST node insertion — astMs drops from ~3600ms to ~350ms (native) and ~547ms (WASM), reducing overall native build from 24.9 to 8.5 ms/file ([#333](https://github.com/optave/codegraph/pull/333))
+
 ## [3.0.2](https://github.com/optave/codegraph/compare/v3.0.1...v3.0.2) (2026-03-04)
 
 **Dataflow goes multi-language, build performance recovery, and native engine parity fixes.** This patch extends dataflow analysis from JS/TS-only to all 11 supported languages, recovers build performance lost after CFG/dataflow became default-on, fixes language-aware identifier collection in dataflow, and closes a native engine scoping bug for constants.

crates/codegraph-core/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "codegraph-core"
-version = "3.0.2"
+version = "3.0.3"
 edition = "2021"
 license = "Apache-2.0"
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@optave/codegraph",
-  "version": "3.0.2",
+  "version": "3.0.3",
   "description": "Local code graph CLI — parse codebases with tree-sitter, build dependency graphs, query them",
   "type": "module",
   "main": "src/index.js",

src/ast.js

@@ -165,13 +165,12 @@ export async function buildAstNodes(db, fileSymbols, _rootDir, _engineOpts) {
     }
   });
 
-  let totalInserted = 0;
+  const allRows = [];
 
   for (const [relPath, symbols] of fileSymbols) {
-    const rows = [];
     const defs = symbols.definitions || [];
 
-    // Pre-load all node IDs for this file into a map
+    // Pre-load all node IDs for this file into a map (read-only, fast)
     const nodeIdMap = new Map();
     for (const row of bulkGetNodeIds.all(relPath)) {
       nodeIdMap.set(`${row.name}|${row.kind}|${row.line}`, row.id);
@@ -186,7 +185,7 @@ export async function buildAstNodes(db, fileSymbols, _rootDir, _engineOpts) {
           parentNodeId =
             nodeIdMap.get(`${parentDef.name}|${parentDef.kind}|${parentDef.line}`) || null;
         }
-        rows.push({
+        allRows.push({
           file: relPath,
           line: call.line,
           kind: 'call',
@@ -205,7 +204,7 @@ export async function buildAstNodes(db, fileSymbols, _rootDir, _engineOpts) {
         // WASM path: walk the tree-sitter AST
         const astRows = [];
         walkAst(symbols._tree.rootNode, defs, relPath, astRows, nodeIdMap);
-        rows.push(...astRows);
+        allRows.push(...astRows);
       } else if (symbols.astNodes?.length) {
         // Native path: use pre-extracted AST nodes from Rust
         for (const n of symbols.astNodes) {
@@ -215,7 +214,7 @@ export async function buildAstNodes(db, fileSymbols, _rootDir, _engineOpts) {
             parentNodeId =
               nodeIdMap.get(`${parentDef.name}|${parentDef.kind}|${parentDef.line}`) || null;
           }
-          rows.push({
+          allRows.push({
             file: relPath,
             line: n.line,
             kind: n.kind,
@@ -227,14 +226,13 @@ export async function buildAstNodes(db, fileSymbols, _rootDir, _engineOpts) {
         }
       }
     }
+  }
 
-    if (rows.length > 0) {
-      tx(rows);
-      totalInserted += rows.length;
-    }
+  if (allRows.length > 0) {
+    tx(allRows);
   }
 
-  debug(`AST extraction: ${totalInserted} nodes stored`);
+  debug(`AST extraction: ${allRows.length} nodes stored`);
 }
 
 /**