createFlowConfigs.js — react Source File

Source Code

/**
 * 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';

const chalk = require('chalk');
const fs = require('fs');
const path = require('path');
const mkdirp = require('mkdirp');
const inlinedHostConfigs = require('../shared/inlinedHostConfigs');
const flowVersion = require('../../package.json').devDependencies['flow-bin'];

const configTemplate = fs
  .readFileSync(__dirname + '/config/flowconfig')
  .toString();

// stores all forks discovered during config generation
const allForks = new Set();
// maps forked file to the base path containing it and it's forks (it's parent)
const forkedFiles = new Map();

function findForks(file) {
  const basePath = path.join(file, '..');
  const forksPath = path.join(basePath, 'forks');
  const forks = fs.readdirSync(path.join('packages', forksPath));
  forks.forEach(f => allForks.add('forks/' + f));
  forkedFiles.set(file, basePath);
  return basePath;
}

function addFork(forks, renderer, file) {
  let basePath = forkedFiles.get(file);
  if (!basePath) {
    basePath = findForks(file);
  }

  const baseFilename = file.slice(basePath.length + 1);

  const parts = renderer.split('-');
  while (parts.length) {
    const candidate = `forks/${baseFilename}.${parts.join('-')}.js`;
    if (allForks.has(candidate)) {
      forks.set(candidate, `${baseFilename}$$`);
      return;
    }
    parts.pop();
  }
  throw new Error(`Cannot find fork for ${file} for renderer ${renderer}`);
}

function writeConfig(
  renderer,
  rendererInfo,
  isServerSupported,
  isFlightSupported,
) {
// ... (93 more lines)