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function(t){"use strict";t.exports=function(t,e,r,n){var i=e.getStartKey(),o=e.getEndKey(),a=t.getBlockMap(),s=a.toSeq().skipUntil(function(t,e){return e===i}).takeUntil(function(t,e){return e===o}).concat([[o,a.get(o)]]).map(function(t){var e=t.getDepth()+r;return e=Math.max(0,Math.min(e,n)),t.set("depth",e)});return a=a.merge(s),t.merge({blockMap:a,selectionBefore:e,selectionAfter:e})}}