ModuleInfoPlugin.ts

import { IEventPlugin } from '../IEventPlugin';
import { EventPluginContext } from '../EventPluginContext';
import { IModule } from '../../models/IModule';
import { Utils } from '../../Utils';

export class ModuleInfoPlugin implements IEventPlugin {
  public priority:number = 40;
  public name:string = 'ModuleInfoPlugin';

  run(context:EventPluginContext):Promise<any> {
    if (!context.event.data || !context.event.data['@error'] || !!context.event.data['@error'].modules) {
      return Promise.resolve();
    }

    try {
      if (document && document.getElementsByTagName) {
        var modules = this.getFromDocument();
        if (modules && modules.length > 0) {
          context.event.data['@error'].modules = modules;
        }
      }
    } catch (e) {
      context.log.error(`Unable to get module info. Exception: ${e.message}`);
    }

    return Promise.resolve();
  }

  private getFromDocument(): IModule[] {
    var modules:IModule[] = [];
    var scripts = document.getElementsByTagName('script');
    if (scripts && scripts.length > 0) {
      for (var index = 0; index < scripts.length; index++) {
        if (scripts[index].src) {
          modules.push({
            module_id: index,
            name: scripts[index].src,
            version: Utils.parseVersion(scripts[index].src)
          });
        } else if (!!scripts[index].innerHTML) {
          modules.push({
            module_id: index,
            name: 'Script Tag',
            version: Utils.getHashCode(scripts[index].innerHTML)
          });
        }
      }
    }

    return modules;
  }
}