zhurui 54669c07cf | ||
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node_modules/object-assign | ||
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license | ||
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readme.md |
readme.md
meow
CLI app helper
Features
- Parses arguments using minimist
- Converts flags to camelCase
- Outputs version when
--version
- Outputs description and supplied help text when
--help
- Makes unhandled rejected promises fail loudly instead of the default silent fail
- Sets the process title to the binary name defined in package.json
Install
$ npm install --save meow
Usage
$ ./foo-app.js unicorns --rainbow-cake
#!/usr/bin/env node
'use strict';
const meow = require('meow');
const foo = require('./');
const cli = meow(`
Usage
$ foo <input>
Options
-r, --rainbow Include a rainbow
Examples
$ foo unicorns --rainbow
🌈 unicorns 🌈
`, {
alias: {
r: 'rainbow'
}
});
/*
{
input: ['unicorns'],
flags: {rainbow: true},
...
}
*/
foo(cli.input[0], cli.flags);
API
meow(options, [minimistOptions])
Returns an object with:
input
(array) - Non-flag argumentsflags
(object) - Flags converted to camelCasepkg
(object) - Thepackage.json
objecthelp
(object) - The help text used with--help
showHelp([code=0])
(function) - Show the help text and exit withcode
options
Type: object
, array
, string
Can either be a string/array that is the help
or an options object.
description
Type: string
, boolean
Default: The package.json "description"
property
A description to show above the help text.
Set it to false
to disable it altogether.
help
Type: string
, boolean
The help text you want shown.
The input is reindented and starting/ending newlines are trimmed which means you can use a template literal without having to care about using the correct amount of indent.
If it's an array each item will be a line.
(Still supported, but you should use a template literal instead.)
The description will be shown above your help text automatically.
Set it to false
to disable it altogether.
version
Type: string
, boolean
Default: The package.json "version"
property
Set a custom version output.
Set it to false
to disable it altogether.
pkg
Type: string
, object
Default: Closest package.json upwards
Relative path to package.json or as an object.
argv
Type: array
Default: process.argv.slice(2)
Custom arguments object.
minimistOptions
Type: object
Default: {}
Minimist options.
Keys passed to the minimist default
option are decamelized, so you can for example pass in fooBar: 'baz'
and have it be the default for the --foo-bar
flag.
Promises
Meow will make unhandled rejected promises fail loudly instead of the default silent fail. Meaning you don't have to manually .catch()
promises used in your CLI.
Tips
See chalk
if you want to colorize the terminal output.
See get-stdin
if you want to accept input from stdin.
See update-notifier
if you want update notifications.
See configstore
if you need to persist some data.
License
MIT © Sindre Sorhus