sqlite: validate StatementSync.run() integers

Use the standard SQLite integer conversion for changes and
lastInsertRowid. Throw ERR_OUT_OF_RANGE when a value cannot be
represented safely as a Number, or return it as a BigInt when
BigInt reads are enabled.

Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol

Author: trivikr

src/node_sqlite.cc

@@ -79,6 +79,24 @@ inline MaybeLocal<String> Utf8StringMaybeOneByte(Isolate* isolate,
       isolate, input.data(), NewStringType::kNormal, len);
 }
 
+inline MaybeLocal<Value> IntegerToValue(Isolate* isolate,
+                                        sqlite3_int64 value,
+                                        bool use_big_ints) {
+  if (use_big_ints) {
+    return BigInt::New(isolate, value);
+  }
+
+  if (value >= -kMaxSafeJsInteger && value <= kMaxSafeJsInteger) {
+    return Number::New(isolate, value);
+  }
+
+  THROW_ERR_OUT_OF_RANGE(
+      isolate,
+      "Value is too large to be represented as a JavaScript number: %" PRId64,
+      value);
+  return MaybeLocal<Value>();
+}
+
 #define CHECK_ERROR_OR_THROW(isolate, db, expr, expected, ret)                 \
   do {                                                                         \
     int r_ = (expr);                                                           \
@@ -101,16 +119,7 @@ inline MaybeLocal<String> Utf8StringMaybeOneByte(Isolate* isolate,
     switch (sqlite3_##from##_type(__VA_ARGS__)) {                              \
       case SQLITE_INTEGER: {                                                   \
         sqlite3_int64 val = sqlite3_##from##_int64(__VA_ARGS__);               \
-        if ((use_big_int_args)) {                                              \
-          (result) = BigInt::New((isolate), val);                              \
-        } else if (std::abs(val) <= kMaxSafeJsInteger) {                       \
-          (result) = Number::New((isolate), val);                              \
-        } else {                                                               \
-          THROW_ERR_OUT_OF_RANGE((isolate),                                    \
-                                 "Value is too large to be represented as a "  \
-                                 "JavaScript number: %" PRId64,                \
-                                 val);                                         \
-        }                                                                      \
+        (result) = IntegerToValue((isolate), val, (use_big_int_args));         \
         break;                                                                 \
       }                                                                        \
       case SQLITE_FLOAT: {                                                     \
@@ -3018,12 +3027,10 @@ MaybeLocal<Object> StatementExecutionHelper::Run(Environment* env,
   Local<Value> last_insert_rowid_val;
   Local<Value> changes_val;
 
-  if (use_big_ints) {
-    last_insert_rowid_val = BigInt::New(isolate, last_insert_rowid);
-    changes_val = BigInt::New(isolate, changes);
-  } else {
-    last_insert_rowid_val = Number::New(isolate, last_insert_rowid);
-    changes_val = Number::New(isolate, changes);
+  if (!IntegerToValue(isolate, last_insert_rowid, use_big_ints)
+           .ToLocal(&last_insert_rowid_val) ||
+      !IntegerToValue(isolate, changes, use_big_ints).ToLocal(&changes_val)) {
+    return MaybeLocal<Object>();
   }
 
   auto run_result_template = env->sqlite_run_result_template();

test/parallel/test-sqlite-statement-sync.js

@@ -556,6 +556,25 @@ suite('StatementSync.prototype.setReadBigInts()', () => {
     });
   });
 
+  test('BigInt is required for reading large last insert row IDs', (t) => {
+    using db = new DatabaseSync(':memory:');
+    db.exec('CREATE TABLE data(key INTEGER PRIMARY KEY) STRICT');
+    const insert = db.prepare('INSERT INTO data VALUES (?)');
+
+    t.assert.throws(() => {
+      insert.run(9007199254740993n);
+    }, {
+      code: 'ERR_OUT_OF_RANGE',
+      message: /^Value is too large to be represented as a JavaScript number: 9007199254740993$/,
+    });
+
+    insert.setReadBigInts(true);
+    t.assert.deepStrictEqual(insert.run(9007199254740995n), {
+      changes: 1n,
+      lastInsertRowid: 9007199254740995n,
+    });
+  });
+
   test('throws if the statement is already finalized', (t) => {
     using db = new DatabaseSync(':memory:');
     const stmt = db.prepare('CREATE TABLE storage(key TEXT, val TEXT)');