Unexpected behavior when parsing a human-readable expression

[osher]

Use-Case Overview

I added ms to let Ops configure some intervals on their ~/config/local.yaml in a human-readable fashion.

The ops tried:

app:
   interval: 1h 30min

This evidently did not behave as expected.

Reproduction steps:

const ms = require('ms');
const v = ms('1h 30min')
console.log(v)

expected behavior

5400000

found behavior

undefined

[osher]

Workaround:
parse every part by yourself, and sum the elements

const s = '1h 30min';
const v = s.replace(/([0-9])[ \t]+([^ \t])/g, (_, digit, char) => `${digit}${char}`)
      .trim().split(/[ \t]+/)
      .map(val => parse(val)).reduce((a,b) => a + b);

[styfle]

ms('1h') + ms('30m') is the best workaround.

Colons are probably better like this feature request #24

Parse errors are suggested in feature request #123