main.js

import { stringify, PuppeteerStringifyExtension } from '../../lib/main.js';

class Extension extends PuppeteerStringifyExtension {
  // beforeAllSteps?(out: LineWriter, flow: UserFlow): Promise<void>;
  async beforeAllSteps(...args) {
    await super.beforeAllSteps(...args);
    args[0].appendLine('console.log("starting");');
  }

  // beforeEachStep?(out: LineWriter, step: Step, flow: UserFlow): Promise<void>;
  async beforeEachStep(...args) {
    await super.beforeEachStep(...args);
    const [out, step] = args;
    out.appendLine(`console.log("about to execute step ${step.type}")`);
  }

  // afterEachStep?(out: LineWriter, step: Step, flow: UserFlow): Promise<void>;
  async afterEachStep(...args) {
    const [out, step] = args;
    out.appendLine(`console.log("finished step ${step.type}")`);
    await super.afterEachStep(...args);
  }

  // afterAllSteps?(out: LineWriter, flow: UserFlow): Promise<void>;
  async afterAllSteps(...args) {
    args[0].appendLine('console.log("finished");');
    await super.afterAllSteps(...args);
  }
}

console.log(
  await stringify(
    {
      title: 'Test recording',
      steps: [
        {
          type: 'navigate',
          url: 'https://wikipedia.org',
        },
      ],
    },
    {
      extension: new Extension(),
      indentation: '	', // use tab to indent lines
    }
  )
);