diff --git a/.esbuild/build.ts b/.esbuild/build.ts
index d5adf070b..1f95703b5 100644
--- a/.esbuild/build.ts
+++ b/.esbuild/build.ts
@@ -1,12 +1,18 @@
-import { build } from 'esbuild';
+import { build, context } from 'esbuild';
+import { mkdir, writeFile } from 'node:fs/promises';
 import { getBuildConfig, packageOptions } from './util.js';
-import { context } from 'esbuild';
 
 const shouldWatch = process.argv.includes('--watch');
+const shouldVisualize = process.argv.includes('--visualize');
 
 const buildPackage = async (entryName: keyof typeof packageOptions) => {
   await build(getBuildConfig({ entryName, minify: false }));
-  await build(getBuildConfig({ entryName, minify: true }));
+  const { metafile } = await build(
+    getBuildConfig({ entryName, minify: true, metafile: shouldVisualize })
+  );
+  if (metafile) {
+    await writeFile(`stats/meta-${entryName}.json`, JSON.stringify(metafile));
+  }
   await build(getBuildConfig({ entryName, minify: false, core: true }));
 };
 
@@ -16,6 +22,7 @@ const handler = (e) => {
 };
 
 const main = async () => {
+  await mkdir('stats');
   const packageNames = Object.keys(packageOptions) as (keyof typeof packageOptions)[];
   for (const pkg of packageNames) {
     await buildPackage(pkg).catch(handler);
diff --git a/.esbuild/util.ts b/.esbuild/util.ts
index dd8114bbd..6d204a5e2 100644
--- a/.esbuild/util.ts
+++ b/.esbuild/util.ts
@@ -23,6 +23,7 @@ export const packageOptions = {
 interface MermaidBuildOptions {
   minify: boolean;
   core?: boolean;
+  metafile?: boolean;
   entryName: keyof typeof packageOptions;
 }
 
@@ -58,7 +59,12 @@ const jisonPlugin = {
   },
 };
 
-export const getBuildConfig = ({ minify, core, entryName }: MermaidBuildOptions): BuildOptions => {
+export const getBuildConfig = ({
+  minify,
+  core,
+  entryName,
+  metafile,
+}: MermaidBuildOptions): BuildOptions => {
   const external: string[] = ['require', 'fs', 'path'];
   const { name, file, packageName } = packageOptions[entryName];
   let output: BuildOptions = buildOptions({
@@ -66,6 +72,7 @@ export const getBuildConfig = ({ minify, core, entryName }: MermaidBuildOptions)
     entryPoints: {
       [`${name}.esm${core ? '.core' : ''}${minify ? '.min' : ''}`]: `src/${file}`,
     },
+    metafile,
   });
 
   if (core) {
@@ -78,12 +85,5 @@ export const getBuildConfig = ({ minify, core, entryName }: MermaidBuildOptions)
     external.push(...Object.keys(dependencies));
     output.external = external;
   }
-
-  // if (watch && config.build) {
-  //   config.build.watch = {
-  //     include: ['packages/mermaid-example-diagram/src/**', 'packages/mermaid/src/**'],
-  //   };
-  // }
-
   return output;
 };