Javascript module to match a string against a regular expression, glob, string, or function that takes the string as an argument and returns a truthy or falsy value. The matcher can also be an array of any or all of these. Useful for allowing a very flexible user-defined config to define things like file paths.

npm install anymatch --save

• matchers: (Array|String|RegExp|Function) String to be directly matched, string with glob patterns, regular expression test, function that takes the testString as an argument and returns a truthy value if it should be matched, or an array of any number and mix of these types.
• testString: (String|Array) The string to test against the matchers. If passed as an array, the first element of the array will be used as the testString for non-function matchers, while the entire array will be applied as the arguments for function matchers.
• returnIndex: (Boolean [optional]) If true, return the array index of the first matcher that that testString matched, or -1 if no match, instead of a boolean result.
• startIndex, endIndex: (Integer [optional]) Can be used to define a subset out of the array of provided matchers to test against. Can be useful with bound matcher functions (see below). When used with returnIndex = true preserves original indexing. Behaves the same as Array.prototype.slice (i.e. includes array members up to, but not including endIndex).

var anymatch = require('anymatch');

var matchers = [
	'path/to/file.js',
	'path/anyjs/**/*.js',
	/foo\.js$/,
	function (string) {
		return string.indexOf('bar') !== -1 && string.length > 10
	}
];

anymatch(matchers, 'path/to/file.js'); // true
anymatch(matchers, 'path/anyjs/baz.js'); // true
anymatch(matchers, 'path/to/foo.js'); // true
anymatch(matchers, 'path/to/bar.js'); // true
anymatch(matchers, 'bar.js'); // false

// returnIndex = true
anymatch(matchers, 'foo.js', true); // 2
anymatch(matchers, 'path/anyjs/foo.js', true); // 1

// skip matchers
anymatch(matchers, 'path/to/file.js', false, 1); // false
anymatch(matchers, 'path/anyjs/foo.js', true, 2, 3); // 2
anymatch(matchers, 'path/to/bar.js', true, 0, 3); // -1

// using globs to match directories and their children
anymatch('node_modules', 'node_modules'); // true
anymatch('node_modules', 'node_modules/somelib/index.js'); // false
anymatch('node_modules/**', 'node_modules/somelib/index.js'); // true
anymatch('node_modules/**', '/absolute/path/to/node_modules/somelib/index.js'); // false
anymatch('**/node_modules/**', '/absolute/path/to/node_modules/somelib/index.js'); // true

You can also pass in only your matcher(s) to get a curried function that has already been bound to the provided matching criteria. This can be used as an Array.prototype.filter callback.

var matcher = anymatch(matchers);

matcher('path/to/file.js'); // true
matcher('path/anyjs/baz.js', true); // 1
matcher('path/anyjs/baz.js', true, 2); // -1

['foo.js', 'bar.js'].filter(matcher); // ['foo.js']

See release notes page on GitHub

NOTE: As of v1.2.0, anymatch uses micromatch for glob pattern matching. The glob matching behavior should be functionally equivalent to the commonly used minimatch library (aside from some fixed bugs and greater performance), so a major version bump wasn't merited. Issues with glob pattern matching should be reported directly to the micromatch issue tracker.

ISC