meow

• Add commands option for subcommand parsing ade4bb0

• Add input.isRequired option to make input arguments required b1561c9

• Export AnyFlag and AnyFlags types 0afdc27

• Improve startup performance cce0096

• Accept camelCase flags in strict mode c3a4b9b

v14.0.0...v14.1.0

Breaking

• breaking

  Require Node.js 18 2ecd29d

Improvements

v12.1.1...v13.0.0

Breaking

• breaking

  Require Node.js 16 (#235) 24d5e9c

• breaking

  Rename alias flag option to shortFlag (#225) 14e870d

  • Short flag is a more correct term for what alias was previously used for. We now have a separate aliases option for actual aliases.

• breaking

  As a reminder, Meow continues to require ESM. For TypeScript users, this includes having "module": "node16", "moduleResolution": "node16" in your tsconfig.

Improvements

• Add aliases flag option (#226) 901b9fc

• Add choices flag option (#228) 149d7af

• Add error when flag.default isn't a valid choice (#231) b2d7ce7

• Don't indent single line help / description text (#232) a5d15e8

v11.0.0...v12.0.0

Breaking

• breaking

  Require Node.js 12 (#181) 05320ac

• breaking

  This package is now pure ESM. Please read this.

• breaking

  You must now pass in the importMeta option so meow can find your package.json:

 const cli = meow(…, {
+	importMeta: import.meta
 });

Previously, meow used some tricks to infer the location of your package.json, but this no longer works in ESM.

v9.0.0...v10.0.0

Breaking

• breaking

  Require Node.js 8 cd635d4

• breaking

  Remove flag's aliases from the flags property (#108) f36715c

• breaking

  Only consider enabling autoHelp/autoVersion in case there is only one argument in process.argv (#114) cd29865

• breaking

  Switch from loud-rejection to hard-rejection f60c26e

Enhancements

• Add TypeScript definition (#116) f1036df

• Add support for number flag type (#103) 5ef9478

• Add hardRejection option 2bcfee7

v5.0.0...v6.0.0

Meow 4 is finally out ✨

Highlights

• breaking

  Requires Node.js 4 or higher.

• Changed how minimist options are specified. (See more below) 43401c3 554119b

• Disabled type inference by default. It can lead to some surprising behavior. Can be enabled again with the inferType option. 1662881

• removed

  Removed support for using an array in the help option. Just use a template literal. c80321d

• removed

  Removed support for the pkg option accepting a string. 2d4d890

• removed

  Removed support for setting the help and version options to false. Instead, use the new autoHelp and autoVersion options. 59dda7a

• Uses exit code 2 when manually calling cli.showHelp() now. 6a32bbc

v3.7.0...v4.0.0

Changed how minimist options are specified

In Meow v3 you specified minimist options top-level just like documented in the minimist readme. Now you specify them in a flags option, grouped by flag name instead of option type.

Before

const cli = meow(
	`
		Help text
	`,
	{
		boolean: [
			'unicorn'
		],
		string: [
			'fooBar'
		],
		alias: {
			u: 'unicorn'
		},
		default: {
			foobar: 'foo'
		}
	}
});

After

const cli = meow(
	`
		Help text
	`,
	flags: {
		unicorn: {
			type: 'boolean',
			alias: 'u'
		},
		fooBar: {
			type: 'string',
			default: 'foo'
		}
	}
});

I would strongly recommend specifying the type property whenever possible to reduce CLI argument parsing ambiguity.