Issues with Bun's Tree Shaking for Effect Code

Hi, I'm using

bun

bun

to build this Effect code. The generated result seems to be large ~ 200KB even after minified.

import * as Effect from 'effect';
const programe = Effect.Console.log('Hello world!');
Effect.Effect.runSync(programe);

import * as Effect from 'effect';
const programe = Effect.Console.log('Hello world!');
Effect.Effect.runSync(programe);

build command:

bun build --outdir=dist --minify src/index.ts

bun build --outdir=dist --minify src/index.ts

Am I doing it right? It doesn't seem tree-shaken to me.