Ives van Hoorne

@compuives

Software Developer @ Catawiki

CS Student @ Twente

What if I put my local editor in the browser?

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Evaluate Entry File

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export default function evaluate(
  fs: FSType,
  code: string,
  path = '/'
) {
  const require = (requirePath: string) => {
    const resolvedPath = resolve.sync(requirePath, {
      filename: path,
      extensions: ['.js', '.json'],
      moduleDirectory: ['node_modules'],
    });

    const resolvedCode = fs.readFileSync(resolvedPath).toString();
    const id = hashsum(resolvedCode + resolvedPath);

    cache[id] =
      cache[id] || evaluate(fs, resolvedCode, resolvedPath);

    return cache[id];
  };

  const module = {
    id: path,
    exports: {},
  };

  evaluateCode(
    `${code}\n//# sourceURL=${location.origin}${path}`,
    require,
    module
  );

  return module.exports;
}
export default function(
  code: string,
  require: Function,
  module: Object
) {
  const exports = module.exports;

  try {
    const windowCode = `(function evaluate(require, module, exports) {${code}\n})`;

    (0, eval)(windowCode).apply(this, [
      require,
      module,
      exports
    ]);

    return module.exports;
  } catch (e) {
    e.isEvalError = true;

    throw e;
  }
}

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@compuives

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