Bundling browserify-middleware fails at runtime

[lucleray]

Hi 👋

Bundling codes that requires the dependency browserify-middleware fails, some files are not bundled in.

Reproduction repo: https://github.com/lucleray/ncc-bug

• yarn install
• yarn run bundle
• node dist/index.js

Error:

> node dist/index.js
internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module '../lib/utils.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at /Users/luc/w/now/ncc-bug/dist/index.js:110750:12
    at Array.map (<anonymous>)
    at Object.<anonymous> (/Users/luc/w/now/ncc-bug/dist/index.js:110749:3)
    at __webpack_require__ (/Users/luc/w/now/ncc-bug/dist/index.js:22:30)
    at Object.<anonymous> (/Users/luc/w/now/ncc-bug/dist/index.js:4958:14)
    at __webpack_require__ (/Users/luc/w/now/ncc-bug/dist/index.js:22:30)

The bug seems to be happening when bundling uglify-es, a dependency of browserify-middleware.

[styfle]

Thanks! It looks like the failure happens at runtime.

I was able to reproduce with an even smaller example.

yarn init -y
yarn add browserify-middleware@8.1.1
echo "let o = require('browserify-middleware')" > index.js
npx @zeit/ncc@0.20.1 build index.js --source-map
node dist

[guybedford]

Turns out this is uglify-es which is exactly the same issue we have with uglify-js. Created #446.

[guybedford]

Thanks for posting the clear issue here @lucleray, fixed in 0.20.4 with #446.