react/scripts/tasks/flow.js

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

'use strict';

process.on('unhandledRejection', err => {
  throw err;
});

const chalk = require('chalk');
const runFlow = require('../flow/runFlow');
const inlinedHostConfigs = require('../shared/inlinedHostConfigs');

// This script is using `flow status` for a quick check with a server.
// Use it for local development.

const primaryRenderer = inlinedHostConfigs.find(
  info => info.isFlowTyped && info.shortName === process.argv[2]
);
if (!primaryRenderer) {
  console.log(
    'The ' +
      chalk.red('yarn flow') +
      ' command now requires you to pick a primary renderer:'
  );
  console.log();
  inlinedHostConfigs.forEach(rendererInfo => {
    if (rendererInfo.isFlowTyped) {
      console.log('  * ' + chalk.cyan('yarn flow ' + rendererInfo.shortName));
    }
  });
  console.log();
  console.log(
    'If you are not sure, run ' + chalk.green('yarn flow dom-node') + '.'
  );
  console.log(
    'This will still typecheck non-DOM packages, although less precisely.'
  );
  console.log();
  console.log('Note that checks for all renderers will run on CI.');
  console.log(
    'You can also do this locally with ' +
      chalk.cyan('yarn flow-ci') +
      ' but it will be slow.'
  );
  console.log();
  process.exit(1);
}

runFlow(primaryRenderer.shortName, ['status']);