In rc.0, how to use lockSwipe of Swiper object to prevent slide in first or last slide?

I have get swiper object through ViewChild.

define slides options BEFORE your constructor by specifing onlyExternal to true like this
sliderOptions = {
onlyExternal: true

the use this option object as options of your ion-slides
<ion-slides #mySlides [options]=“this.sliderOptions”>

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