Expected Behavior / Situation

Rollup should have a minimal disk impact in node_modules

Actual Behavior / Situation

Rollup takes up 4.3MB of disk space in the node_modules/ of Chrome DevTools, which puts it in the top 10 largest packages.

988K	node_modules/rollup/dist/shared
364K	node_modules/rollup/dist/rollup.browser.js
 72K	node_modules/rollup/dist/bin
 24K	node_modules/rollup/dist/rollup.d.ts
4.0K	node_modules/rollup/dist/rollup.js
4.0K	node_modules/rollup/dist/loadConfigFile.js
1.3M	node_modules/rollup/dist/rollup.browser.js.map
1.3M	node_modules/rollup/dist/es

Rollup ships with a sourcemap that takes up 30% of its bundle.

Modification Proposal

Similarly to what we have done with Acorn (acornjs/acorn#1023) and ESLint (eslint/eslint#14098), can we remove the sourcemap from the NPM package?