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rewireReactApp.js
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rewireReactApp.js
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const fs = require('fs');
const path = require('path');
const chalk = require('chalk');
const commander = require('commander');
const findScriptsUsingBin = require('./lib/findScriptsUsingBin');
const replaceBinInScript = require('./lib/replaceBinInScript');
const clearConsole = require('./lib/clearConsole');
const replaceScripts = require('./lib/replaceScripts');
const spawn = require('cross-spawn');
const packageJson = require('./package.json');
const configOverridesPath = path.join(__dirname, 'config-overrides.js');
const cwd = process.cwd();
let projectName;
const program = new commander.Command(packageJson.name)
.version(packageJson.version)
.arguments('<project-directory>')
.usage(`${chalk.green('<project-directory>')}`)
.action(name => {
projectName = name;
})
.on('--help', () => {
console.log(` Only ${chalk.green('<project-directory>')} is required.`);
console.log();
})
.parse(process.argv);
if (typeof projectName === 'undefined') {
console.error('Please specify the project directory:');
console.log(
` ${chalk.cyan(program.name())} ${chalk.green('<project-directory>')}`
);
console.log();
console.log('For example:');
console.log(` ${chalk.cyan(program.name())} ${chalk.green('my-react-app')}`);
console.log();
console.log(
`Run ${chalk.cyan(`${program.name()} --help`)} to see all options.`
);
process.exit(1);
}
const appRoot = path.join(cwd, projectName);
if (!fs.existsSync(appRoot)) {
clearConsole();
console.log(chalk.red('Rewiring Failed'));
console.log();
console.log(` Can't find "${projectName}" in ${cwd}`);
console.log();
console.log(` Are you sure you're not running the command`);
console.log(' from the project root?');
console.log();
process.exit(1);
}
const appPackageJsonPath = path.join(appRoot, 'package.json');
if (!fs.existsSync(path.join(appRoot, 'package.json'))) {
clearConsole();
console.log(chalk.red('Rewiring Failed'));
console.log();
console.log(' package.json was not found in ' + appRoot);
console.log();
process.exit(1);
}
console.log();
console.log('Rewiring ' + appRoot);
const appPackageJsonRaw = fs.readFileSync(appPackageJsonPath);
let appPackageJson;
try {
appPackageJson = JSON.parse(appPackageJsonRaw);
} catch (error) {
clearConsole();
console.log(chalk.red('Rewiring Failed'));
console.log();
console.log(' Failed to decode package.json in:');
console.log(' ' + appRoot);
console.log();
console.log(' Please check if it contains valid JSON.');
console.log();
process.exit(1);
}
function isInDependencies(packageJson, packageName) {
return (
packageJson.dependencies &&
typeof packageJson.dependencies[packageName] !== 'undefined'
);
}
function isInDevDependencies(packageJson, packageName) {
return (
packageJson.devDependencies &&
typeof packageJson.devDependencies[packageName] !== 'undefined'
);
}
const appConfigOverridesPath = path.join(appRoot, 'config-overrides.js');
if (
isInDependencies('react-app-rewired') &&
isInDevDependencies('react-app-rewired') &&
fs.existsSync(appConfigOverridesPath)
) {
console.log(chalk.yellow('Already Rewired'));
console.log();
console.log(' It looks like your app is already rewired.');
console.log();
process.exit(0);
}
if (isInDependencies('react-scripts') && isInDevDependencies('react-scripts')) {
clearConsole();
console.log(chalk.red('Rewiring Failed'));
console.log();
console.log(' "react-scripts" module is not found in the "dependencies"');
console.log(' or "devDepejndencies" of ' + projectName);
console.log();
console.log(
' Are you sure this project was created using Create React App?'
);
console.log(' If yes, please install "react-scripts" and try again.');
console.log();
process.exit(1);
}
const scriptsUsingReactScripts = findScriptsUsingBin(
appPackageJson.scripts,
'react-scripts'
);
if (scriptsUsingReactScripts.length === 0) {
clearConsole();
console.log(chalk.red('Rewiring Failed'));
console.log();
console.log(' "react-scripts" is not used in package.json "scripts" in ');
console.log(' ' + projectName);
console.log();
console.log(
' Are you sure this project was created using Create React App?'
);
console.log();
process.exit(1);
}
const rewiredScripts = scriptsUsingReactScripts.reduce(
(acc, scriptName) => ({
...acc,
[scriptName]: replaceBinInScript(
appPackageJson.scripts[scriptName],
'react-scripts',
'react-app-rewired'
)
}),
{}
);
const newAppPackageJson = replaceScripts(appPackageJson, rewiredScripts);
// Run all the rewiring logic.
fs.copyFileSync(configOverridesPath, appConfigOverridesPath);
fs.writeFileSync(
appPackageJsonPath,
JSON.stringify(newAppPackageJson, null, 2)
);
const args = [
'install',
'react-app-rewired',
isInDependencies('react-scripts') ? '--save' : '--save-dev'
];
spawn.sync('npm', args, {
stdio: 'inherit',
cwd: appRoot
});
console.log(chalk.bold.green('Rewired Succesfully'));
console.log();
console.log(' Start with checking config-overrides.js in ' + projectName);
console.log();
console.log(' Read more on rewiring here:');
console.log(' https://github.com/timarney/react-app-rewired');
console.log();