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index.js
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index.js
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/**
* Copyright (c) 2014-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
'use strict';
// Based on similar script in Jest
// https://github.com/facebook/jest/blob/master/scripts/prettier.js
const chalk = require('chalk');
const glob = require('glob');
const path = require('path');
const execFileSync = require('child_process').execFileSync;
const mode = process.argv[2] || 'check';
const shouldWrite = mode === 'write' || mode === 'write-changed';
const onlyChanged = mode === 'check-changed' || mode === 'write-changed';
const isWindows = process.platform === 'win32';
const prettier = isWindows ? 'prettier.cmd' : 'prettier';
const prettierCmd = path.resolve(
__dirname,
'../../node_modules/.bin/' + prettier
);
const defaultOptions = {
'bracket-spacing': 'false',
'single-quote': 'true',
'jsx-bracket-same-line': 'true',
'trailing-comma': 'all',
'print-width': 80,
};
const config = {
default: {
patterns: [
// Internal forwarding modules
'packages/*/*.js',
// Source files
'packages/*/src/**/*.js',
'packages/shared/**/*.js',
],
ignore: ['**/node_modules/**'],
},
scripts: {
patterns: [
// Forwarding modules that get published to npm (must be ES5)
'packages/*/npm/**/*.js',
// Need to work on Node
'scripts/**/*.js',
'fixtures/**/*.js',
],
ignore: [
'**/node_modules/**',
// Built files and React repo clone
'scripts/bench/benchmarks/**',
],
options: {
'trailing-comma': 'es5',
},
},
};
function exec(command, args) {
console.log('> ' + [command].concat(args).join(' '));
var options = {
cwd: process.cwd(),
env: process.env,
stdio: 'pipe',
encoding: 'utf-8',
};
return execFileSync(command, args, options);
}
var mergeBase = exec('git', ['merge-base', 'HEAD', 'master']).trim();
var changedFiles = new Set(
exec('git', [
'diff',
'-z',
'--name-only',
'--diff-filter=ACMRTUB',
mergeBase,
]).match(/[^\0]+/g)
);
Object.keys(config).forEach(key => {
const patterns = config[key].patterns;
const options = config[key].options;
const ignore = config[key].ignore;
const globPattern = patterns.length > 1
? `{${patterns.join(',')}}`
: `${patterns.join(',')}`;
const files = glob
.sync(globPattern, {ignore})
.filter(f => !onlyChanged || changedFiles.has(f));
if (!files.length) {
return;
}
const args = Object.keys(defaultOptions).map(
k => `--${k}=${(options && options[k]) || defaultOptions[k]}`
);
args.push(`--${shouldWrite ? 'write' : 'l'}`);
try {
exec(prettierCmd, [...args, ...files]).trim();
} catch (e) {
if (!shouldWrite) {
console.log(
'\n' +
chalk.red(
` This project uses prettier to format all JavaScript code.\n`
) +
chalk.dim(` Please run `) +
chalk.reset('yarn prettier-all') +
chalk.dim(` and add changes to files listed below to your commit:`) +
`\n\n` +
e.stdout
);
process.exit(1);
}
throw e;
}
});