perf: optimize update performance

[1198994985]

node调用update方法时，this.parent!.path会重复计算

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[watsonhaw5566]

node调用update方法时，this.parent!.path会重复计算

代码里做了parentPath的抽取变量，这样优化可以减少for循环的重复读取吗？

[1198994985]

node调用update方法时，this.parent!.path会重复计算

代码里做了parentPath的抽取变量，这样优化可以减少for循环的重复读取吗？

访问path会调用get path()这个方法，提取出来会减少path的获取，按理来说会优化一些性能

get path() {
const dataPath: string[] = [];
const parents = [];
let parent = this.parent;

while (parent) {
  parents.unshift(parent);
  parent = parent.parent;
}

for (let i = 0; i < parents.length; i++) {
  const child = parents[i + 1] || this;

  if (RuntimeOptions.get('platform') === 'ali') {
    dataPath.push('children');
    dataPath.push(child.index.toString());
  } else {
    dataPath.push('nodes');
    dataPath.push(child.id.toString());
  }
}

return dataPath;

}

[watsonhaw5566]

@1198994985 容我想想需要怎么测试，兄die在钉钉群里面没。可否交流一波。我们也准备写一下字节小程序。

[1198994985]

@1198994985 容我想想需要怎么测试，兄die在钉钉群里面没。可否交流一波。我们也准备写一下字节小程序。

没在，钉钉群是哪个，我加一下 @watsonhaw5566

[watsonhaw5566]

@1198994985 容我想想需要怎么测试，兄die在钉钉群里面没。可否交流一波。我们也准备写一下字节小程序。

没在，钉钉群是哪个，我加一下 @watsonhaw5566

钉钉群号: 34935625
或者扫码

[1198994985]

@1198994985 容我想想需要怎么测试，兄die在钉钉群里面没。可否交流一波。我们也准备写一下字节小程序。

没在，钉钉群是哪个，我加一下 @watsonhaw5566

钉钉群号: 34935625 或者扫码

搜1198994985，那个人就是我 @watsonhaw5566

[codecov]

Codecov Report

Merging #1777 (86f9e75) into master (b119d5d) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1777   +/-   ##
=======================================
  Coverage   90.27%   90.28%           
=======================================
  Files         386      386           
  Lines        4711     4712    +1     
  Branches      716      681   -35     
=======================================
+ Hits         4253     4254    +1     
  Misses        449      449           
  Partials        9        9           

Impacted Files	Coverage Δ
packages/remax-runtime/src/VNode.ts	100.00% <100.00%> (ø)

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[1198994985]

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