inconsistent parsing of numeric arguments

[lightmare]

// x.js
import minimist from "minimist"
import mri from "mri"

const OPTIONS = { boolean: [ 'flag' ], array: [ { key: '_', number: true } ] }

console.log('minimist', minimist(process.argv.slice(2), OPTIONS))

console.log('mri', mri(process.argv.slice(2), OPTIONS))

$ node x.js 10 20 xx 40
minimist { _: [ 10, 20, 'xx', 40 ], flag: false }
mri { _: [ '10', '20', 'xx', '40' ] }

$ node x.js --flag 10 20 xx 40
minimist { _: [ 10, 20, 'xx', 40 ], flag: true }
mri { _: [ 10, '20', 'xx', '40' ], flag: true }

$ node x.js 10 --flag 20 xx 40
minimist { _: [ 10, 20, 'xx', 40 ], flag: true }
mri { _: [ '10', 20, 'xx', '40' ], flag: true }

It appears mri converts a single argument after a flag to number. I would expect it to convert all (like minimist) or none.