import yargs from 'yargs' const { argv } = yargs(process.argv.slice(2)) .usage( `Usage: $0 [input.css] [OPTIONS] [-o|--output output.css] [--watch|-w] $0 ... [OPTIONS] --dir [--watch|-w] $0 [OPTIONS] --dir [--watch|-w] $0 [OPTIONS] --dir [--watch|-w] $0 ... [OPTIONS] --replace`, ) .group( ['o', 'd', 'r', 'map', 'no-map', 'watch', 'verbose', 'env'], 'Basic options:', ) .option('o', { alias: 'output', desc: 'Output file', type: 'string', conflicts: ['dir', 'replace'], }) .option('d', { alias: 'dir', desc: 'Output directory', type: 'string', conflicts: ['output', 'replace'], }) .option('r', { alias: 'replace', desc: 'Replace (overwrite) the input file', type: 'boolean', conflicts: ['output', 'dir'], }) .alias('m', 'map') .describe('map', 'Create an external sourcemap') .describe('no-map', 'Disable the default inline sourcemaps') .option('w', { alias: 'watch', desc: 'Watch files for changes and recompile as needed', type: 'boolean', conflicts: 'replace', }) .option('verbose', { desc: 'Be verbose', type: 'boolean', }) .option('env', { desc: 'A shortcut for setting NODE_ENV', type: 'string', }) .group( ['u', 'parser', 'stringifier', 'syntax'], 'Options for use without a config file:', ) .option('u', { alias: 'use', desc: 'List of postcss plugins to use', type: 'array', }) .option('parser', { desc: 'Custom postcss parser', type: 'string', }) .option('stringifier', { desc: 'Custom postcss stringifier', type: 'string', }) .option('syntax', { desc: 'Custom postcss syntax', type: 'string', }) .group(['ext', 'base'], 'Options for use with --dir:') .option('ext', { desc: 'Override the output file extension; for use with --dir', type: 'string', implies: 'dir', }) .option('base', { desc: 'Mirror the directory structure relative to this path in the output directory, for use with --dir', type: 'string', implies: 'dir', }) .group(['include-dotfiles', 'poll', 'config'], 'Advanced options:') .option('include-dotfiles', { desc: 'Enable glob to match files/dirs that begin with "."', type: 'boolean', }) .option('poll', { desc: 'Use polling for file watching. Can optionally pass polling interval; default 100 ms', implies: 'watch', }) .option('config', { desc: 'Set a custom directory to look for a config file', type: 'string', }) .alias('h', 'help') .example('$0 input.css -o output.css', 'Basic usage') .example('$0 src/**/*.css --base src --dir build', 'Glob Pattern & output') .example( 'cat input.css | $0 -u autoprefixer > output.css', 'Piping input & output', ) .epilog( `If no input files are passed, it reads from stdin. If neither -o, --dir, or --replace is passed, it writes to stdout. If there are multiple input files, the --dir or --replace option must be passed. Input files may contain globs (e.g. src/**/*.css). If you pass an input directory, it will process all files in the directory and any subdirectories, respecting the glob pattern. For more details, please see https://github.com/postcss/postcss-cli`, ) if (argv.ext && argv.ext.indexOf('.') !== 0) argv.ext = `.${argv.ext}` export default argv