react-native-web-headroom/docs/node_modules/@storybook/core/src/server/utils.js

React Native Web Headroom

import path from 'path';
import fs from 'fs';

export function parseList(str) {
  return str.split(',');
}

export function getEnvConfig(program, configEnv) {
  Object.keys(configEnv).forEach(fieldName => {
    const envVarName = configEnv[fieldName];
    const envVarValue = process.env[envVarName];
    if (envVarValue) {
      program[fieldName] = envVarValue; // eslint-disable-line
    }
  });
}

export function getMiddleware(configDir) {
  const middlewarePath = path.resolve(configDir, 'middleware.js');
  if (fs.existsSync(middlewarePath)) {
    let middlewareModule = require(middlewarePath); // eslint-disable-line
    if (middlewareModule.__esModule) { // eslint-disable-line
      middlewareModule = middlewareModule.default;
    }
    return middlewareModule;
  }
  return () => {};
}