bloom-layout/example/node_modules/react-hot-loader/lib/webpack/index.js

layout components used in bloom packages

'use strict';

var fs = require('fs');
var path = require('path');

var _require = require('source-map'),
    SourceNode = _require.SourceNode,
    SourceMapConsumer = _require.SourceMapConsumer;

var makeIdentitySourceMap = require('./makeIdentitySourceMap');

var tagCommonJSExportsSource = null;

function transform(source, map) {
  // This is a Webpack loader, but the user put it in the Babel config.
  if (source && source.types && source.types.IfStatement) {
    throw new Error('React Hot Loader: You are erroneously trying to use a Webpack loader ' + 'as a Babel plugin. Replace "react-hot-loader/webpack" with ' + '"react-hot-loader/babel" in the "plugins" section of your .babelrc file. ' + 'While we recommend the above, if you prefer not to use Babel, ' + 'you may remove "react-hot-loader/webpack" from the "plugins" section of ' + 'your .babelrc file altogether, and instead add "react-hot-loader/webpack" ' + 'to the "loaders" section of your Webpack configuration.');
  }

  if (this.cacheable) {
    this.cacheable();
  }

  // Read the helper once.
  if (!tagCommonJSExportsSource) {
    tagCommonJSExportsSource = fs.readFileSync(path.join(__dirname, 'tagCommonJSExports.js'), 'utf8')
    // Babel inserts these.
    // Ideally we'd opt out for one file but this is simpler.
    .replace(/['"]use strict['"];/, '')
    // eslint comments don't need to end up in the output
    .replace(/\/\/ eslint-disable-line .*\n/g, '\n').replace(/\/\* global.*\*\//, '').split(/\n\s*/).join(' ');
  }

  // Parameterize the helper with the current filename.
  var separator = '\n\n';
  var appendText = tagCommonJSExportsSource.replace(/__FILENAME__/g, JSON.stringify(this.resourcePath));

  if (this.sourceMap === false) {
    return this.callback(null, [source, appendText].join(separator));
  }

  if (!map) {
    map = makeIdentitySourceMap(source, this.resourcePath); // eslint-disable-line no-param-reassign
  }
  var node = new SourceNode(null, null, null, [SourceNode.fromStringWithSourceMap(source, new SourceMapConsumer(map)), new SourceNode(null, null, this.resourcePath, appendText)]).join(separator);

  var result = node.toStringWithSourceMap();
  return this.callback(null, result.code, result.map.toString());
}

module.exports = transform;