Bun does not load .env when run via bin

[jasongitmail]

What version of Bun is running?

1.1.35-canary.51+357581c61

What platform is your computer?

Darwin 24.1.0 arm64 arm

What steps can reproduce the bug?

1. Create .env with some value TEST_ENV_VAR=123
2. Create an index.ts containing

#!/usr/bin/env bun

console.log(process.env)

3. Add a bin property to package.json

{
  "name": "",
  "version": "1.0.0",
  "description": "",
  "bin": {
    "bunrepro": "./index.ts"
  },
  "type": "module",
  "author": "",
  "dependencies": {
  },
  "devDependencies": {
  }
}

3. Now run:

bun install 
npm link // `bun link` does not create a global link, which I assume is known behavior
bunrepro 

What is the expected behavior?

When running bunrepo, you should see our TEST_ENV_VAR=123 within the console log output of process.env. (We do see TEST_ENV_VAR=123 in this output when running bun index.ts directly, as expected.)

What do you see instead?

When running bunrepo, TEST_ENV_VAR=123 is NOT present in the console log output of process.env.

Additional information

No response