render (h) {
    const children = this.$slots.default ||
      [h(CIcon, {
        props: {
          name: 'triangle-up'
        },
        attrs: {
          height: '0.6em',
          width: '0.6em'
        }
      })]

    const { size, incrementStepper } = this.context
    const iconSize = size === 'sm' ? '11px' : '15px'

    return h(CStepperButton, {
      attrs: {
        ...this.$attrs,
        fontSize: iconSize,
        'data-chakra-component': 'CNumberIncrementStepper'
      },
      nativeOn: incrementStepper
    }, children)
  }
CNumberIncrementStepper component

The button to increment the value of the input.

@extends CStepperButton
@see Docs https://vue.chakra-ui.com/numberinput