fix: from and to should be string

Author: SSShooter

src/customLink.ts

@@ -67,10 +67,11 @@ const createText = function (string: string, x: number, y: number, color?: strin
 }
 
 export const createLink = function (this: MindElixirInstance, from: Topic, to: Topic, isInitPaint?: boolean, obj?: LinkItem) {
-  const map = this.map.getBoundingClientRect()
   if (!from || !to) {
     return // not expand
   }
+  this.hideLinkController()
+  const map = this.map.getBoundingClientRect()
   const pfrom = from.getBoundingClientRect()
   const pto = to.getBoundingClientRect()
   const fromCenterX = (pfrom.x + pfrom.width / 2 - map.x) / this.scaleVal
@@ -177,7 +178,6 @@ export const removeLink = function (this: MindElixirInstance, linkSvg?: CustomSv
     link = this.currentLink
   }
   if (!link) return
-  console.log(link)
   this.hideLinkController()
   const id = link.linkObj!.id
   console.log(id)

src/interact.ts

@@ -135,8 +135,6 @@ export const getDataString = function (this: MindElixirInstance) {
   const data = collectData(this)
   return JSON.stringify(data, (k, v) => {
     if (k === 'parent' && typeof v !== 'string') return undefined
-    if (k === 'from') return v.nodeObj.id
-    if (k === 'to') return v.nodeObj.id
     return v
   })
 }