1 files changed, 151 insertions, 0 deletions
diff --git a/bench/module-loader/create.js b/bench/module-loader/create.js
new file mode 100644
index 000000000..26ae6cfd3
--- /dev/null
+++ b/bench/module-loader/create.js
@@ -0,0 +1,151 @@
+const fs = require("fs");
+
+var count = 500;
+
+var saveStack = process.argv.includes("--save-stack") || false;
+var output = process.cwd() + "/output";
+// fs.rmdirSync("output", { recursive: true });
+try {
+  fs.mkdirSync(output, { recursive: true });
+} catch (e) {}
+
+for (var i = 0; i < count; i++) {
+  var file = output + "/file" + i + ".mjs";
+  fs.writeFileSync(
+    file,
+    new Array(Math.trunc(i * 0.25))
+      .fill("")
+      .map((k, j) => `export * from "./file${j}.mjs";`)
+      .join(";globalThis.exportCounter++;\n") +
+      `
+export * from "./file${i + 1}.mjs";
+export const hello${i} = "hello${i}";
+${saveStack ? `globalThis.evaluationOrder.push("${file}");` : ""}
+globalThis.counter++;
+`,
+    "utf8"
+  );
+  var file2 = output + "/file" + i + ".js";
+
+  fs.writeFileSync(
+    file2,
+    new Array(Math.trunc(i * 0.25))
+      .fill("")
+      .map((k, j) => `Object.assign(module.exports, require("./file${j}.js"));`)
+      .join(";globalThis.exportCounter++;\n") +
+      `
+  Object.assign(module.exports, require("./file${i + 1}.js"));
+module.exports.hello${i} = "hello${i}";
+${saveStack ? `globalThis.evaluationOrder.push("${file2}");` : ""}
+globalThis.counter++;
+`,
+    "utf8"
+  );
+}
+
+fs.writeFileSync(
+  output + `/file${count}.mjs`,
+  `
+    export const THE_END = true;
+  ${
+    saveStack
+      ? `globalThis.evaluationOrder.push("${output}/file${count}.mjs");`
+      : ""
+  }    
+`,
+  "utf8"
+);
+
+fs.writeFileSync(
+  output + `/file${count}.js`,
+  `
+      module.exports.THE_END = true;
+      ${
+        saveStack
+          ? `globalThis.evaluationOrder.push("${output}/file${count}.js");`
+          : ""
+      }
+      `,
+  "utf8"
+);
+
+fs.writeFileSync(
+  import.meta.dir + "/import.mjs",
+  `${saveStack ? `globalThis.evaluationOrder = [];` : ""}
+  globalThis.counter=0; globalThis.exportCounter = 0;
+  console.time("import");
+  const Foo = await import('${output}/file0.mjs');
+  export const THE_END = Foo.THE_END;
+  console.timeEnd("import");
+  ${saveStack ? `console.log(globalThis.evaluationOrder.join("\\n"));` : ""}
+  console.log("Loaded", globalThis.counter, "files", "totaling", new Intl.NumberFormat().format(globalThis.exportCounter), 'exports');`,
+  "utf8"
+);
+
+fs.writeFileSync(
+  "meta.require.mjs",
+  `${saveStack ? `globalThis.evaluationOrder = [];` : ""}
+  globalThis.counter=0; globalThis.exportCounter = 0;
+console.time("import.meta.require");
+const Foo = import.meta.require("${output}/file0.mjs");
+export const THE_END = Foo.THE_END;
+console.timeEnd("import.meta.require");
+${saveStack ? `console.log(globalThis.evaluationOrder.join("\\n"));` : ""}
+console.log("Loaded", globalThis.counter, "files", "totaling", new Intl.NumberFormat().format(globalThis.exportCounter), 'exports');`,
+  "utf8"
+);
+
+fs.writeFileSync(
+  "meta.require.cjs",
+  `${saveStack ? `globalThis.evaluationOrder = [];` : ""}
+  globalThis.counter=0; globalThis.exportCounter = 0;
+  await 1;
+  console.time("import.meta.require");
+  const Foo = import.meta.require("${output}/file0.js");
+  export const THE_END = Foo.THE_END;
+  console.timeEnd("import.meta.require");
+  ${saveStack ? `console.log(globalThis.evaluationOrder.join("\\n"));` : ""}
+  console.log("Loaded", globalThis.counter, "files", "totaling", new Intl.NumberFormat().format(globalThis.exportCounter), 'exports');`,
+  "utf8"
+);
+
+fs.writeFileSync(
+  import.meta.dir + "/require.js",
+  `${saveStack ? `globalThis.evaluationOrder = [];` : ""}
+  globalThis.counter=0; globalThis.exportCounter = 0;
+  console.time("require");
+  const Foo = require("${output}/file0.js");
+  module.exports.THE_END = Foo.THE_END;
+  console.timeEnd("require");
+  ${saveStack ? `console.log(globalThis.evaluationOrder.join("\\n"));` : ""}
+  console.log("Loaded", globalThis.counter, "files", "totaling", new Intl.NumberFormat().format(globalThis.exportCounter), 'exports');
+  `,
+  "utf8"
+);
+
+console.log(`
+Created ${count} files in ${output}
+
+${
+  saveStack
+    ? "The evaluation order will be dumped to stdout"
+    : "To dump the evaluation order, run: \n  bun run create.js -- --save-stack"
+}
+
+Run:
+
+  bun ./meta.require.mjs
+  bun ./meta.require.js
+
+Run:
+
+  bun ./import.mjs
+  node ./import.mjs
+  deno run -A ./import.mjs
+
+Run:
+
+  bun ./require.js
+  node ./require.js
+
+`);