a small rollup plugin to ensure your build is approx the expected filesize.

npm i rollup-plugin-filesize-check --save-dev

then in rollup config:

import sizeCheck from 'rollup-plugin-filesize-check'

export default [
  {
    input: 'src/index.js',
    output: [{ file: 'builds/out.js', format: 'umd' }],
    plugins: [
      sizeCheck({
        expect: 95, // sizes in kb
        warn: 5 // acceptable diff (+/-)
      })
    ]
  }
]

looks best with rollup -c --silent flag

Options

• expect (optional): the size, in kilobytes, you expect the builds to be

• warn (optional): a difference (+/-), in kilobytes, that like to be warned of (with red text)

See also

• rollup-plugin-filesize by ritz078
• rollup-plugin-sizes by tivac

MIT