st-bundle/node_modules/fuse-box/modules/fuse-box-dev-import/index.js

CLI for watching and bundling SpringType projects.

function loadRemoteScript(url) {
  return Promise.resolve().then(function() {
    if (FuseBox.isBrowser) {
      var d = document;
      var head = d.getElementsByTagName('head')[0];
      var target;
      if (/\.css$/.test(url)) {
        target = d.createElement('link');
        target.rel = 'stylesheet';
        target.type = 'text/css';
        target.href = url;
      } else {
        target = d.createElement('script');
        target.type = 'text/javascript';
        target.src = url;
        target.async = true;
      }
      head.insertBefore(target, head.firstChild);
    }
  });
}

function request(url, cb) {
  if (FuseBox.isBrowser) {
    var request = new XMLHttpRequest();
    request.onreadystatechange = function() {
      var err;
      if (this.readyState == 4) {
        if (this.status !== 200) {
          err = { code: this.status, msg: this.statusText };
        }
        cb(err, this.responseText, request.getResponseHeader('Content-Type'));
      }
    };
    request.open('GET', url, true);
    request.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
    request.send();
  }
}

function evaluateModule(id, code) {
  var fn = new Function('module', 'exports', code);
  var moduleExports = {};
  var moduleObject = { exports: moduleExports };
  fn(moduleObject, moduleExports);
  return moduleObject.exports;
}

module.exports = function(id) {
  return new Promise(function(resolve, reject) {
    if (FuseBox.exists(id)) {
      return resolve(FuseBox.import(id));
    }

    var isCSS = /\.css$/.test(id);
    if (FuseBox.isServer) {
      if (isCSS) {
        return reject("Can't load CSS on server!");
      }
    }
    // id.charCodeAt(4) = : which means http
    if (FuseBox.isBrowser) {
      if (name.charCodeAt(4) === 58 || name.charCodeAt(5) === 58 || isCSS) {
        return loadRemoteScript(id);
      }
    }
    var splitConfig = FuseBox.global('__fsbx__bundles__');

    if (splitConfig && splitConfig.bundles) {
      if (splitConfig.bundles[id]) {
        return resolve(FuseBox.import('~/' + splitConfig.bundles[id].main));
      }
    }

    request(id, function(error, contents, type) {
      if (error) {
        return reject(error);
      }
      var data;

      if (type) {
        if (/javascript/.test(type)) {
          data = evaluateModule(id, contents);
        } else if (/json/.test(type)) {
          data = JSON.parse(contents);
        } else if (!/javascript/.test(type)) {
          data = contents;
        } else {
          data = contents;
        }
      } else {
        data = contents;
      }

      return resolve(data);
    });
  });
};