Parses and compiles CSS nth-checks to highly optimized functions.

feedic

nth-check

  "description": "performant nth-check parser & compiler",

    "url": "https://github.com/fb55/nth-check"

  "author": "Felix Boehm <me@feedic.com>",

    "url": "https://github.com/fb55/nth-check/issues"

  "homepage": "https://github.com/fb55/nth-check",

#nth-check [![Build Status](https://travis-ci.org/fb55/nth-check.png)](https://travis-ci.org/fb55/nth-check)

# nth-check [![Build Status](https://travis-ci.org/fb55/nth-check.svg)](https://travis-ci.org/fb55/nth-check)

A performant nth-check parser & compiler.

This module can be used to parse & compile nth-checks, as they are found in CSS 3's `nth-child()` and `nth-last-of-type()`.

`nth-check` focusses on speed, providing optimized functions for different kinds of nth-child formulas, while still following the [spec](http://www.w3.org/TR/css3-selectors/#nth-child-pseudo).

Parses the expression, throws a `SyntaxError` if it fails, otherwise returns an array containing two elements.

Takes an array with two elements (as returned by `.parse`) and returns a highly optimized function.

If the formula doesn't match any elements, it returns [`boolbase`](https://github.com/fb55/boolbase)'s `falseFunc`, otherwise, a function accepting an _index_ is returned, which returns whether or not a passed _index_ matches the formula. (Note: The spec starts counting at `1`, the returned function at `0`).

		{
		"name": "nth-check",
		"version": "1.0.1",
		"version": "1.0.2",
		"description": "performant nth-check parser & compiler",
		@@ -13,2 +13,7 @@ "main": "index.js",
		},
		"files": [
		"compile.js",
		"index.js",
		"parse.js"
		],
		"keywords": [
		@@ -20,3 +25,3 @@ "nth-child",
		"author": "Felix Boehm <me@feedic.com>",
		"license": "BSD",
		"license": "BSD-2-Clause",
		"bugs": {
		@@ -23,0 +28,0 @@ "url": "https://github.com/fb55/nth-check/issues"

		@@ -1,6 +0,6 @@
		#nth-check [![Build Status](https://travis-ci.org/fb55/nth-check.png)](https://travis-ci.org/fb55/nth-check)
		# nth-check [![Build Status](https://travis-ci.org/fb55/nth-check.svg)](https://travis-ci.org/fb55/nth-check)

		A performant nth-check parser & compiler.

		###About
		### About

		@@ -11,3 +11,3 @@ This module can be used to parse & compile nth-checks, as they are found in CSS 3's `nth-child()` and `nth-last-of-type()`.

		###API
		### API

		@@ -18,7 +18,7 @@ ```js

		#####`nthCheck(formula)`
		##### `nthCheck(formula)`

		First parses, then compiles the formula.

		#####`nthCheck.parse(formula)`
		##### `nthCheck.parse(formula)`

		@@ -33,3 +33,3 @@ Parses the expression, throws a `SyntaxError` if it fails, otherwise returns an array containing two elements.

		#####`nthCheck.compile([a, b])`
		##### `nthCheck.compile([a, b])`

		@@ -36,0 +36,0 @@ Takes an array with two elements (as returned by `.parse`) and returns a highly optimized function.

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