在utils里的internFunc是做什么用的

[qpxtWhite]

在packages/utils/src/utils.ts里有一个internFunc函数，传入一个字符串，返回一个同样的字符串，意义是什么

// When the string is set as the object property name,
// it will be attempted to be transformed into a constant version to avoid repeated caching by the browser
export function internFunc(internalizeString) {
  // Don't consider "Hash-collision，https://en.wikipedia.org/wiki/Collision_(computer_science)"
  // v8 貌似在 16383 长度时会发生 hash-collision 经过测试后发现正常
  const temporaryOb = {};
  temporaryOb[internalizeString] = true;
  return Object.keys(temporaryOb)[0];
}

这个函数在eval之前调用了一下

const evalInfo = [
  `;(function(${keys.join(',')}){${useStrict ? '"use strict";' : ''}`,
  `\n}).call(window.${contextKey},${values.join(',')});`,
];
const internalizeString = internFunc(evalInfo[0] + code + evalInfo[1]);

// (0, eval) This expression makes the eval under the global scope
(0, eval)(internalizeString);

有没有谁能解惑下