Nuxt/lib/app/components/nuxt-child.js

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import Vue from 'vue'
const transitionsKeys = [
'name',
'mode',
'css',
'type',
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'duration',
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'enterClass',
'leaveClass',
'enterActiveClass',
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'enterActiveClass',
'leaveActiveClass',
'enterToClass',
'leaveToClass'
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]
const listenersKeys = [
'beforeEnter',
'enter',
'afterEnter',
'enterCancelled',
'beforeLeave',
'leave',
'afterLeave',
'leaveCancelled'
]
export default {
name: 'nuxt-child',
functional: true,
render (h, { parent, data }) {
data.nuxtChild = true
const _parent = parent
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const transitions = parent.$nuxt.nuxt.transitions
const defaultTransition = parent.$nuxt.nuxt.defaultTransition
let depth = 0
while (parent) {
if (parent.$vnode && parent.$vnode.data.nuxtChild) {
depth++
}
parent = parent.$parent
}
data.nuxtChildDepth = depth
const transition = transitions[depth] || defaultTransition
let transitionProps = {}
transitionsKeys.forEach((key) => {
if (typeof transition[key] !== 'undefined') {
transitionProps[key] = transition[key]
}
})
let listeners = {}
listenersKeys.forEach((key) => {
if (typeof transition[key] === 'function') {
listeners[key] = transition[key].bind(_parent)
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}
})
return h('transition', {
props: transitionProps,
on: listeners
}, [
h('router-view', data)
])
}
}