Transform HTML entities to unicode

The Babel JSX compiler converts HTML entities into the unicode characters they represent. In ReScript, we have to use the actual unicode directly. For some characters, like   this isn't always convenient.

Would it be possible for the React PPX to do the same transformation that Babel does? See their entity map for reference: https://github.com/babel/babel/blob/b3e2bcda73dea7d68b4c82bfabb92acb11b1ed90/packages/babel-parser/src/plugins/jsx/xhtml.js

Babel example

Input

let f = () => <div>&nbsp;</div>;

output

let f = () => /*#__PURE__*/React.createElement("div", null, "\xA0");

ReScript example

Input

let f = () => <div> {React.string("&nbsp;")} </div>

Output

function f(param) {
  return React.createElement("div", undefined, " ");
}

Note that "  will render as-is, not as an actual nonbreaking space character.

从 React PPX JSX 转换开始，并将其行为与 Babel 链接的 JSX 实体映射进行比较。使用 issue 中的 Babel 和 ReScript 示例作为检查用例；当受支持的 HTML 实体像 Babel 一样生成对应的 Unicode 字符时，即表示完成。