@@ -366,13 +366,13 @@ export default class TreeStore extends TreeEventTarget {
366366 * @param triggerEvent 是否触发事件
367367 * @param triggerDataChange 是否触发 `data-change` 事件以通知外部刷新视图
368368 */
369- setExpand (
369+ async setExpand (
370370 key : TreeNodeKeyType ,
371371 value : boolean ,
372372 expandParent : boolean = false ,
373373 triggerEvent : boolean = true ,
374374 triggerDataChange : boolean = true
375- ) : void {
375+ ) : Promise < void > {
376376 const node = this . mapData [ key ]
377377 if ( ! node || ( ! expandParent && node . isLeaf ) ) return
378378
@@ -386,7 +386,7 @@ export default class TreeStore extends TreeEventTarget {
386386 if ( triggerDataChange ) {
387387 this . emit ( 'visible-data-change' )
388388 }
389- new Promise ( ( resolve , reject ) => {
389+ await new Promise ( ( resolve , reject ) => {
390390 const load = this . options . load as Function
391391 load ( node , resolve , reject )
392392 } )
@@ -446,7 +446,7 @@ export default class TreeStore extends TreeEventTarget {
446446 }
447447
448448 if ( expandParent && node . _parent && value ) {
449- this . setExpand (
449+ await this . setExpand (
450450 node . _parent [ this . options . keyField ] ,
451451 value ,
452452 expandParent ,
@@ -461,14 +461,15 @@ export default class TreeStore extends TreeEventTarget {
461461 * @param keys 展开的节点 key 数组
462462 * @param value 是否展开
463463 */
464- setExpandKeys (
464+ async setExpandKeys (
465465 keys : TreeNodeKeyType [ ] ,
466466 value : boolean ,
467467 triggerDataChange : boolean = true
468- ) : void {
469- keys . forEach ( key => {
470- this . setExpand ( key , value , false , false , false )
471- } )
468+ ) : Promise < void > {
469+ 470+ for ( const key of keys ) {
471+ await this . setExpand ( key , value , false , false , false )
472+ }
472473
473474 if ( triggerDataChange ) {
474475 this . emit ( 'visible-data-change' )
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