npm install workflow-transformer-async

Add the plugin to your ~/.workflow/config.js file.

Note: The WorkflowTransformerAsync plugin must be the first transformer in the list of transformers for the rest of the transformers to work properly.

import {WorkflowTranformerAsync} from "workflow-transformer-async";

export const config = {
  transformers: [new WorkflowTranformerAsync()]
  ...
};

import defaultBrowser from "default-browser"

export const DefaultBrowser = {
  type: "async",
  loader: async () => {
    const browserName = (await defaultBrowser()).name.toLowerCase();
    return require("workflow-app-" + browserName)
  }
}