Function expandHotkeyToEdges

src/utils.ts:35–69

(hotkey: string)

}

export function expandHotkeyToEdges(hotkey: string): NormalizedHotkeyString[][] {
  // NOTE: we can't just split by comma, since comma is a valid hotkey character!
  const output = []
  let acc = ['']
  let commaIsSeparator = false
  for (let i = 0; i < hotkey.length; i++) {
    if (commaIsSeparator && hotkey[i] === ',') {
      output.push(acc)
      acc = ['']
      commaIsSeparator = false
      continue
    }

    if (hotkey[i] === SEQUENCE_DELIMITER) {
      // Spaces are used to separate key sequences, so a following comma is
      // part of the sequence, not a separator.
      acc.push('')
      commaIsSeparator = false
      continue
    } else if (hotkey[i] === '+') {
      // If the current character is a +, a following comma is part of the
      // shortcut and not a separator.
      commaIsSeparator = false
    } else {
      commaIsSeparator = true
    }

    acc[acc.length - 1] += hotkey[i]
  }

  output.push(acc)

  // Remove any empty hotkeys/sequences
  return output.map(h => h.map(k => normalizeHotkey(k)).filter(k => k !== '')).filter(h => h.length > 0)
}