How to use the mutant.h function in mutant

function location ({location, msg, isEditing, onUpdate}) {
    const markdown = api.message.html.markdown
    return h('div', {}, computed(location, markdown))
  }
}

function Option ({ notifications = 0, imageEl, name, location, selected }) {
      return h('Option', { className: selected ? '-selected' : '' }, [
        h('div.circle', [
          when(notifications, h('div.alert', notifications)),
          imageEl
        ]),
        api.app.html.link(location, name),
      ])
    }
  })

function renderSecret () {
    return [
      h('h1', 'Your secret'),
      when(secretLabel, [ h('h3', 'Label'), h('pre', secretLabel) ]),
      h('h3', 'Secret'),
      h('pre', secret),
      h('div.actions', [
        CopyToClipboard({ toCopy: secret }),
        when(modalOpen, h('button -subtle', { 'ev-click': () => modalOpen.set(false) }, 'close'), [])
      ])
    ]
  }

function description ({description, isEditing, onUpdate}) {
    const markdown = api.message.html.markdown
    const input = h('textarea', {'ev-input': e => onUpdate(e.target.value), value: description})

    return h('Description', [
      when(isEditing,
        input,
        computed(description, markdown)
      )
    ])
  }
}

function menuItem (handleClick) {
    return h('a', {
      style: { order: 1 },
      'ev-click': () => handleClick(route)
    }, route)
  }