perf: add benchmarks for importing all packages

benchmark/import.mjs

@@ -0,0 +1,28 @@
+import benchmark from "cronometro";
+
+await benchmark(
+  {
+    qs() {
+      return import("qs");
+    },
+    "fast-querystring"() {
+      return import("../lib/index.js");
+    },
+    "node:querystring"() {
+      return import("node:querystring");
+    },
+    "query-string"() {
+      return import("query-string");
+    },
+    querystringify() {
+      return import("querystringify");
+    },
+    "@aws-sdk/querystring-parser"() {
+      return import("@aws-sdk/querystring-parser");
+    },
+    querystringparser() {
+      return import("querystringparser");
+    },
+  },
+  { warmup: true },
+);

package.json

@@ -13,7 +13,8 @@
     "test:coverage": "vitest --coverage",
     "coverage": "vitest run --coverage",
     "benchmark:parse": "node benchmark/parse.mjs",
-    "benchmark:stringify": "node benchmark/stringify.mjs"
+    "benchmark:stringify": "node benchmark/stringify.mjs",
+    "benchmark:import": "node benchmark/import.mjs"
   },
   "keywords": [
     "querystring",