vant-weapp/packages/mixins/link.ts

export const link = Behavior({
  properties: {
    url: String,
    linkType: {
      type: String,
      value: 'navigateTo',
    },
  },

  methods: {
    jumpLink(urlKey = 'url') {
      const url = this.data[urlKey];
      if (url) {        
        if (this.data.linkType === 'navigateTo' && getCurrentPages().length > 9) {
          wx.redirectTo({ url });
        } else {
          wx[this.data.linkType]({ url });
        }
      }
    },
  },
});