Transpiler error when Boolean value is assigned to class prop during SSR

[axel-habermaier]

Consider the following code:

function Crash() {
  return (
    <div class={true} />
  );
}

This causes a transpiler error in SSR-mode:

438 | function trimWhitespace(text) {
439 |   text = text.replace(/\r/g, "");
                    ^
TypeError: /home/axel/hytts/src/jsx/jsx.test.tsx: text.replace is not a function. (In 'text.replace(/\r/g, "")', 'text.replace' is undefined)
 code: "BABEL_TRANSFORM_ERROR",

      at trimWhitespace (/home/axel/hytts/node_modules/babel-plugin-jsx-dom-expressions/index.js:439:15)
      at <anonymous> (/home/axel/hytts/node_modules/babel-plugin-jsx-dom-expressions/index.js:2598:16)
      at forEach (1:11)
      at transformAttributes$1 (/home/axel/hytts/node_modules/babel-plugin-jsx-dom-expressions/index.js:2484:14)
      at transformElement$2 (/home/axel/hytts/node_modules/babel-plugin-jsx-dom-expressions/index.js:2287:3)
      at transformJSX (/home/axel/hytts/node_modules/babel-plugin-jsx-dom-expressions/index.js:3570:18)
      ...

Obviously, the code is somewhat questionable and doesn't really make sense. Nevertheless, such a transpiler error is unexpected.

The code above should either compile to <div class="true" /> or a sensible error message should be raised.

[titoBouzout]

I cannot reproduce the error, so I will leave it like that for now till other PRs get merged as theres some handling of true and false. BTW, what should be doing is adding an empty attribute, as <div class/> instead of <div class="true"/>, if you want true to be the value of the attribute you should be using a string.