[Error] failed to import yargs-parser in args.js

[leosuncin]

The v8.0.0 throws an error when using the test helper

import type { FastifyInstance } from 'fastify';
import helper from 'fastify-cli/helper.js';

export function config() {
  return {
    skipOverride: true,
  };
}

export async function build(): Promise<FastifyInstance & AsyncDisposable> {
  const argv = [AppPath];
  const options = config();
  const app: FastifyInstance = await helper.build(argv, options);

  await app.ready();

  return Object.assign(app, {
    [Symbol.asyncDispose]: async () => {
      await app.close();
    },
  });
}

TypeError: argv is not a function

TypeError: argv is not a function
      at parseArgs (/home/runner/work/conduit-monorepo/conduit-monorepo/node_modules/.pnpm/fastify-cli@8.0.0/node_modules/fastify-cli/args.js:26:32)
      at runFastify (/home/runner/work/conduit-monorepo/conduit-monorepo/node_modules/.pnpm/fastify-cli@8.0.0/node_modules/fastify-cli/start.js:102:16)
      at Object.build (/home/runner/work/conduit-monorepo/conduit-monorepo/node_modules/.pnpm/fastify-cli@8.0.0/node_modules/fastify-cli/helper.js:13:12)
      at build (/home/runner/work/conduit-monorepo/conduit-monorepo/apps/backend/tests/helper.ts:55:45)
      at process.processTicksAndRejections (node:internal/process/task_queues:104:5)
      at async TestContext. (/home/runner/work/conduit-monorepo/conduit-monorepo/apps/backend/tests/plugins/health-check.test.ts:9:21)
      at async Test.run (node:internal/test_runner/test:1125:7)
      at async startSubtestAfterBootstrap (node:internal/test_runner/harness:358:3)

Line which throws the error

fastify-cli/args.js

Line 26 in 2877dbc

const commandLineArguments = argv(args, {

Debugging and setting a breakpoint shows that the function is an object rather than a function

My guest is the import causes the error

fastify-cli/args.js

Line 3 in 2877dbc

const argv = require('yargs-parser')

OS info

OS: Linux
Node version: 24.14.0
pnpm: 10.33.4