dynamic-bundler.js

// BSD License
//
// Copyright (c) 2016-present, Devin Abbott. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
//  * Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
//  * Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
//  * Neither the name Facebook nor the names of its contributors may be used to
//    endorse or promote products derived from this software without specific
//    prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Adapted from react-native-web-player

function wrap(code) {
  return `
(function(module, exports, require) {
  ${code}
})(this.module, this.exports, this.require);
`;
}

function evaluate(require, code) {
  const exports = {};
  const module = { exports };
  const env = { module, exports, require };
  
  try {
    // eslint-disable-next-line no-new-func
    new Function(code).call(env);
  } catch (e) {
    console.log(e);
    throw new Error('Failed to bundle component');
  }

  return module.exports;
}

function bundle(code) {
  return evaluate(name => {
    switch (name) {
      case 'react':
        return React;
      default:
        throw new Error(`Failed to require module ${name}.`);
    }
  }, wrap(code));
}