"Expected consistent spacing" when chaining

[reggi]

I'm getting Expected consistent spacing warning and I'm not sure why, here's the code:

const filtered = (props, prefix) => {
  if (typeof prefix === 'string') prefix = new RegExp(`^${prefix}`)
  return Object.keys(props)
    .filter(key => prefix.test(key))
    .map(key => ({ [unprefixify(prefix, key)]: props[key]}))
    .reduce((props, prop) => ({ ...props, ...prop }), {})
}

[reggi]

Ah, it wasn't leading space is was the space before [unprefixify

const filtered = (props, prefix) => {
  if (typeof prefix === 'string') prefix = new RegExp(`^${prefix}`)
  return Object.keys(props)
    .filter(key => prefix.test(key))
    .map(key => ({[unprefixify(prefix, key)]: props[key]}))
    .reduce((props, prop) => ({ ...props, ...prop }), {})
}