Passing data to Vue component - texted Neo blocks, nested map filter

nested-neo-vue.twig

{# Get this Neo block's child blocks #}
{% set items = block.children %}

{# Prep items for Vue. Note second level of child blocks #}
{% set itemsPrepped = items.all|map(i => {
  label: i.label,
  years: i.children.all|map(y => {
    value: y.number,
    suffix: y.label ?? false
  })
}) %}

<timeline
  :items="{{ itemsPrepped|json_encode }}"
>
</timeline>