react-hot-loader/dist/babel.development.js

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

// the same as before
var PREFIX = '__reactstandin__';
var REGENERATE_METHOD = PREFIX + 'regenerateByEval';

var templateOptions = {
  placeholderPattern: /^([A-Z0-9]+)([A-Z0-9_]+)$/
};

/* eslint-disable */
var shouldIgnoreFile = function shouldIgnoreFile(file) {
  return !!file.split('\\').join('/').match(/node_modules\/(react|react-hot-loader)([\/]|$)/);
};
/* eslint-enable */

module.exports = function plugin(args) {
  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

  // This is a Babel plugin, but the user put it in the Webpack config.
  if (this && this.callback) {
    throw new Error('React Hot Loader: You are erroneously trying to use a Babel plugin ' + 'as a Webpack loader. We recommend that you use Babel, ' + 'remove "react-hot-loader/babel" from the "loaders" section ' + 'of your Webpack configuration, and instead add ' + '"react-hot-loader/babel" to the "plugins" section of your .babelrc file. ' + 'If you prefer not to use Babel, replace "react-hot-loader/babel" with ' + '"react-hot-loader/webpack" in the "loaders" section of your Webpack configuration. ');
  }
  var t = args.types,
      template = args.template;
  var _options$safetyNet = options.safetyNet,
      safetyNet = _options$safetyNet === undefined ? true : _options$safetyNet;


  var buildRegistration = template('reactHotLoader.register(ID, NAME, FILENAME);', templateOptions);
  var headerTemplate = template('(function () {\n       var enterModule = (typeof reactHotLoaderGlobal !== \'undefined\' ? reactHotLoaderGlobal : require(\'react-hot-loader\')).enterModule;\n       enterModule && enterModule(module);\n     }())', templateOptions);
  var footerTemplate = template('(function () {\n       var leaveModule = (typeof reactHotLoaderGlobal !== \'undefined\' ? reactHotLoaderGlobal : require(\'react-hot-loader\')).leaveModule;\n       leaveModule && leaveModule(module);\n     }())', templateOptions);
  var evalTemplate = template('this[key]=eval(code);', templateOptions);

  // We're making the IIFE we insert at the end of the file an unused variable
  // because it otherwise breaks the output of the babel-node REPL (#359).

  var buildTagger = template('    \n(function () {  \n  \n  var reactHotLoader = (typeof reactHotLoaderGlobal !== \'undefined\' ?reactHotLoaderGlobal : require(\'react-hot-loader\')).default;\n  \n  if (!reactHotLoader) {\n    return;\n  }\n\n  REGISTRATIONS  \n}());\n  ', templateOptions);

  // Gather top-level variables, functions, and classes.
  // Try our best to avoid variables from require().
  // Ideally we only want to find components defined by the user.
  function shouldRegisterBinding(binding) {
    var _binding$path = binding.path,
        type = _binding$path.type,
        node = _binding$path.node;

    switch (type) {
      case 'FunctionDeclaration':
      case 'ClassDeclaration':
      case 'VariableDeclaration':
        return true;
      case 'VariableDeclarator':
        {
          var init = node.init;

          if (t.isCallExpression(init) && init.callee.name === 'require') {
            return false;
          }
          return true;
        }
      default:
        return false;
    }
  }

  var REGISTRATIONS = Symbol('registrations');
  return {
    visitor: {
      ExportDefaultDeclaration: function ExportDefaultDeclaration(path, state) {
        var file = state.file;
        // Default exports with names are going
        // to be in scope anyway so no need to bother.

        if (path.node.declaration.id) {
          return;
        }

        // Move export default right hand side to a variable
        // so we can later refer to it and tag it with __source.
        var id = path.scope.generateUidIdentifier('default');
        var expression = t.isExpression(path.node.declaration) ? path.node.declaration : t.toExpression(path.node.declaration);
        path.insertBefore(t.variableDeclaration('const', [t.variableDeclarator(id, expression)]));
        path.node.declaration = id; // eslint-disable-line no-param-reassign

        // It won't appear in scope.bindings
        // so we'll manually remember it exists.
        state[REGISTRATIONS].push(buildRegistration({
          ID: id,
          NAME: t.stringLiteral('default'),
          FILENAME: t.stringLiteral(file.opts.filename)
        }));
      },


      Program: {
        enter: function enter(_ref, state) {
          var scope = _ref.scope;
          var file = state.file;

          state[REGISTRATIONS] = []; // eslint-disable-line no-param-reassign

          // Everything in the top level scope, when reasonable,
          // is going to get tagged with __source.
          /* eslint-disable guard-for-in,no-restricted-syntax */
          for (var id in scope.bindings) {
            var binding = scope.bindings[id];
            if (shouldRegisterBinding(binding)) {
              state[REGISTRATIONS].push(buildRegistration({
                ID: binding.identifier,
                NAME: t.stringLiteral(id),
                FILENAME: t.stringLiteral(file.opts.filename)
              }));
            }
          }
          /* eslint-enable */
        },
        exit: function exit(_ref2, state) {
          var node = _ref2.node;
          var file = state.file;

          var registrations = state[REGISTRATIONS];
          state[REGISTRATIONS] = [];

          // inject the code only if applicable
          if (registrations && registrations.length && !shouldIgnoreFile(file.opts.filename)) {
            if (safetyNet) {
              node.body.unshift(headerTemplate());
            }
            // Inject the generated tagging code at the very end
            // so that it is as minimally intrusive as possible.
            node.body.push(t.emptyStatement());
            node.body.push(buildTagger({ REGISTRATIONS: registrations }));
            node.body.push(t.emptyStatement());

            if (safetyNet) {
              node.body.push(footerTemplate());
            }
          }
        }
      },
      Class: function Class(classPath) {
        var classBody = classPath.get('body');
        var hasRegenerateMethod = false;
        var hasMethods = false;

        classBody.get('body').forEach(function (path) {
          var node = path.node;

          // don't apply transform to static class properties

          if (node.static) {
            return;
          }

          if (node.key.name !== REGENERATE_METHOD) {
            hasMethods = true;
          } else {
            hasRegenerateMethod = true;
          }
        });

        if (hasMethods && !hasRegenerateMethod) {
          var regenerateMethod = t.classMethod('method', t.identifier(REGENERATE_METHOD), [t.identifier('key'), t.identifier('code')], t.blockStatement([evalTemplate()]));

          classBody.pushContainer('body', regenerateMethod);

          classBody.get('body').forEach(function (path) {
            var node = path.node;


            if (node.key.name === REGENERATE_METHOD) {
              path.addComment('leading', ' @ts-ignore', true);
              path.get('body').get('body')[0].addComment('leading', ' @ts-ignore', true);
            }
          });
        }
      }
    }
  };
};

module.exports.shouldIgnoreFile = shouldIgnoreFile;