fix(csv-parse): honor normalized objname in result collection

packages/csv-parse/lib/index.js

@@ -101,13 +101,11 @@ const parse = function () {
   const parser = new Parser(options);
   if (callback) {
     const records =
-      options === undefined || options.objname === undefined
-        ? []
-        : Object.create(null);
+      parser.options.objname === undefined ? [] : Object.create(null);
     parser.on("readable", function () {
       let record;
       while ((record = this.read()) !== null) {
-        if (options === undefined || options.objname === undefined) {
+        if (parser.options.objname === undefined) {
           records.push(record);
         } else {
           Object.assign(records, {

packages/csv-parse/lib/sync.js

@@ -5,8 +5,9 @@ const parse = function (data, opts = {}) {
   if (typeof data === "string") {
     data = Buffer.from(data);
   }
-  const records = opts && opts.objname ? Object.create(null) : [];
   const parser = transform(opts);
+  const records =
+    parser.options.objname === undefined ? [] : Object.create(null);
   const push = (record) => {
     if (parser.options.objname === undefined) records.push(record);
     else {

packages/csv-parse/test/option.objname.js

@@ -1,5 +1,7 @@
 import "should";
+import assert from "node:assert/strict";
 import { parse } from "../lib/index.js";
+import { parse as parseSync } from "../lib/sync.js";
 
 describe("Option `objname`", function () {
   describe("validation", function () {
@@ -11,4 +13,30 @@ describe("Option `objname`", function () {
       );
     });
   });
+
+  describe("normalized result mode", function () {
+    it("returns a dictionary with the first column as key", function () {
+      const records = parseSync("alice,A\nbob,B", { objname: 0 });
+      assert.deepEqual(
+        records,
+        Object.assign(Object.create(null), {
+          alice: ["alice", "A"],
+          bob: ["bob", "B"],
+        }),
+      );
+    });
+
+    for (const objname of [null, false]) {
+      it(`returns complete array records with objname ${objname}`, function (next) {
+        parse("alice,A,extra\nbob,B,extra", { objname }, (err, records) => {
+          if (err) return next(err);
+          assert.deepEqual(records, [
+            ["alice", "A", "extra"],
+            ["bob", "B", "extra"],
+          ]);
+          next();
+        });
+      });
+    }
+  });
 });