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HTML

              
                <main id="app">
	<msg v-on:add-tl="addToMaster" v-bind:amount="50">{{ message }}</msg>
	<msg v-on:add-tl="addToMaster" v-bind:amount="-50">Good day</msg>
	<msg v-on:add-tl="addToMaster" v-bind:amount="50">Who are you</msg>
</main>


<!-- VUE TEMPLATES -->
<script type="text/x-template" id="msg">
	<section>
		<h1><slot></slot> <span>{{name}}</span></h1>
	</section>
</script>
              
            
!

CSS

              
                * {
	box-sizing: border-box;
}

html {
	margin: 0;
}

body {
	margin: 0;
	background: hsl(0,0%,90%);
	display: flex;
	min-height: 100vh;
	color: hsl(0,0%,5%);
}

main {
	background: hsl(0,0%,98%);
	min-width: 50%;
	min-height: 50vh;
	margin: auto;
	box-shadow: 0px 0px 20px hsla(0,0%,0%,0.2);
	display: flex;
	flex-direction: column;
	visibility: hidden;
	padding: 1rem;
}


section {
	margin: 1rem auto;
	border: 1px solid hsl(0,0%,75%);
	padding: 2rem;
}

h1 {
	margin: 0;
}

h1 > span {
	font-style: italic;
	color: hsl(0,0%,10%);
}
              
            
!

JS

              
                function moveSideways( el, amount ) {
	return TweenMax.to( el, 1, { xPercent:amount, ease:Power2.easeInOut } );
}


Vue.component( 'msg', {
	template: '#msg',
	
	props: [ 'amount' ],
	
	data() {
		
		return {
			name: 'Stranger',
			myTl: new TimelineLite(),
		}
	},
	
	mounted() {
		console.log( 'component mounted', this.amount )
		
		this.myTl.add( moveSideways( this.$el, this.amount ) )
		
		this.$emit( 'add-tl', { tl:this.myTl, position:'-=0.5' } )
	}
	
} )


const app = new Vue( {
	el: '#app',
	
	data() {
		
		return {
			message: 'Hello',
			masterTl: new TimelineLite( { paused:true } )
		}
	},
	
	beforeMount() {
		console.log('app beforeMount')
		// This would be the perfect place to add stuff to the master timeline. But, alas, we do not have access to the DOM here.
	},

	mounted() {
		console.log('app mounted')
		// We do have access to the DOM but all children are called before this component is called.
		// So... We cheat and push this to the very start of the timeline using the position parameter
		// Which kind of backfires as the first animation is also added at time 0
		// this.masterTl.from(this.$el, 1, {yPercent:25, ease:Linear.easeNone}, 0)
		
		// Then we try again, with .shiftChildren()
		// https://greensock.com/docs/TimelineLite/shiftChildren()
		
		const tl = new TimelineLite()
		tl.to( this.$el, 2, {autoAlpha:1, ease:Linear.easeNone } )
		tl.from( this.$el, 1, { yPercent:25, ease:Power2.easeInOut }, '-=0.5')
		
		this.masterTl.shiftChildren( tl.totalDuration() )
		// this.masterTl.shiftChildren( tl.totalDuration() - 0.75 ) // Or this to create some overlap
		this.masterTl.add( tl, 0 )
		// Score!
		
		
		// wait until all children components have initialized
		this.$nextTick( function() {
			console.log('App next tick')
			this.masterTl.play()

		})

	},
	
	methods: {
		
		addToMaster( payload ) {
			console.log('addToMaster', payload.position)
			this.masterTl.add(payload.tl, payload.position)
		}
	}
	
	

} )
              
            
!
999px

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