Move to ESM

.github/workflows/main.yml

@@ -10,13 +10,12 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - 17
+          - 20
+          - 18
           - 16
-          - 14
-          - 12
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install

.npmrc

@@ -1,3 +1 @@
-save-exact = true
-package-lock = false
-update-notifier = false
+package-lock=false

README.md

@@ -4,10 +4,8 @@
 
 ## Install
 
-With [npm](http://npmjs.org/):
-
-```console
-$ npm install color-string
+```sh
+npm install color-string
 ```
 
 ## Usage
@@ -44,19 +42,18 @@ colorString.get.rgb('invalid color string')      // null
 ### Generation
 
 ```js
-colorString.to.hex([255, 255, 255])     // "#FFFFFF"
-colorString.to.hex([0, 0, 255, 0.4])    // "#0000FF66"
-colorString.to.hex([0, 0, 255], 0.4)    // "#0000FF66"
-colorString.to.rgb([255, 255, 255])     // "rgb(255, 255, 255)"
-colorString.to.rgb([0, 0, 255, 0.4])    // "rgba(0, 0, 255, 0.4)"
-colorString.to.rgb([0, 0, 255], 0.4)    // "rgba(0, 0, 255, 0.4)"
-colorString.to.rgb.percent([0, 0, 255]) // "rgb(0%, 0%, 100%)"
-colorString.to.keyword([255, 255, 0])   // "yellow"
-colorString.to.hsl([360, 100, 100])     // "hsl(360, 100%, 100%)"
-colorString.to.hwb([50, 3, 15])         // "hwb(50, 3%, 15%)"
-
-// all functions also support swizzling
-colorString.to.rgb(0, [0, 255], 0.4)    // "rgba(0, 0, 255, 0.4)"
-colorString.to.rgb([0, 0], [255], 0.4)  // "rgba(0, 0, 255, 0.4)"
-colorString.to.rgb([0], 0, [255, 0.4])  // "rgba(0, 0, 255, 0.4)"
+colorString.to.hex(255, 255, 255)     // "#FFFFFF"
+colorString.to.hex(0, 0, 255, 0.4)    // "#0000FF66"
+colorString.to.hex(0, 0, 255, 0.4)    // "#0000FF66"
+colorString.to.rgb(255, 255, 255)     // "rgb(255, 255, 255)"
+colorString.to.rgb(0, 0, 255, 0.4)    // "rgba(0, 0, 255, 0.4)"
+colorString.to.rgb(0, 0, 255, 0.4)    // "rgba(0, 0, 255, 0.4)"
+colorString.to.rgb.percent(0, 0, 255) // "rgb(0%, 0%, 100%)"
+colorString.to.keyword(255, 255, 0)   // "yellow"
+colorString.to.hsl(360, 100, 100)     // "hsl(360, 100%, 100%)"
+colorString.to.hwb(50, 3, 15)         // "hwb(50, 3%, 15%)"
 ```
+
+## License
+
+MIT

index.d.ts

@@ -0,0 +1,23 @@
+export type Model = 'rgb' | 'hsl' | 'hwb';
+
+export type ColorString = {
+	get: {
+		(color: string): {model: Model; value: number[]} | undefined;
+		rgb: (color: string) => number[] | undefined;
+		hsl: (color: string) => number[] | undefined;
+		hwb: (color: string) => number[] | undefined;
+	};
+	to: {
+		hex: (r: number, g: number, b: number, a?: number) => string | undefined;
+		rgb: {
+			(r: number, g: number, b: number, a?: number): string | undefined;
+			percent: (r: number, g: number, b: number, a?: number) => string | undefined;
+		};
+		keyword: (r: number, g: number, b: number, a?: number) => string | undefined;
+		hsl: (h: number, s: number, l: number, a?: number) => string | undefined;
+		hwb: (h: number, w: number, b: number, a?: number) => string | undefined;
+	};
+};
+
+declare const colorString: ColorString;
+export default colorString;

index.js

@@ -1,118 +1,112 @@
-/* MIT license */
-var colorNames = require('color-name');
-var swizzle = require('simple-swizzle');
-var hasOwnProperty = Object.hasOwnProperty;
+import colorNames from 'color-name';
 
-var reverseNames = Object.create(null);
+const reverseNames = Object.create(null);
 
-// create a list of reverse color names
-for (var name in colorNames) {
-	if (hasOwnProperty.call(colorNames, name)) {
+// Create a list of reverse color names
+for (const name in colorNames) {
+	if (Object.hasOwnProperty.call(colorNames, name)) {
 		reverseNames[colorNames[name]] = name;
 	}
 }
 
-var cs = module.exports = {
+const cs = {
 	to: {},
-	get: {}
+	get: {},
 };
 
 cs.get = function (string) {
-	var prefix = string.substring(0, 3).toLowerCase();
-	var val;
-	var model;
+	const prefix = string.slice(0, 3).toLowerCase();
+	let value;
+	let model;
 	switch (prefix) {
-		case 'hsl':
-			val = cs.get.hsl(string);
+		case 'hsl': {
+			value = cs.get.hsl(string);
 			model = 'hsl';
 			break;
-		case 'hwb':
-			val = cs.get.hwb(string);
+		}
+
+		case 'hwb': {
+			value = cs.get.hwb(string);
 			model = 'hwb';
 			break;
-		default:
-			val = cs.get.rgb(string);
+		}
+
+		default: {
+			value = cs.get.rgb(string);
 			model = 'rgb';
 			break;
+		}
 	}
 
-	if (!val) {
+	if (!value) {
 		return null;
 	}
 
-	return {model: model, value: val};
+	return {model, value};
 };
 
 cs.get.rgb = function (string) {
 	if (!string) {
 		return null;
 	}
 
-	var abbr = /^#([a-f0-9]{3,4})$/i;
-	var hex = /^#([a-f0-9]{6})([a-f0-9]{2})?$/i;
-	var rgba = /^rgba?\(\s*([+-]?\d+)(?=[\s,])\s*(?:,\s*)?([+-]?\d+)(?=[\s,])\s*(?:,\s*)?([+-]?\d+)\s*(?:[,|\/]\s*([+-]?[\d\.]+)(%?)\s*)?\)$/;
-	var per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,?\s*([+-]?[\d\.]+)\%\s*,?\s*([+-]?[\d\.]+)\%\s*(?:[,|\/]\s*([+-]?[\d\.]+)(%?)\s*)?\)$/;
-	var keyword = /^(\w+)$/;
+	const abbr = /^#([a-f\d]{3,4})$/i;
+	const hex = /^#([a-f\d]{6})([a-f\d]{2})?$/i;
+	const rgba = /^rgba?\(\s*([+-]?\d+)(?=[\s,])\s*(?:,\s*)?([+-]?\d+)(?=[\s,])\s*(?:,\s*)?([+-]?\d+)\s*(?:[,|/]\s*([+-]?[\d.]+)(%?)\s*)?\)$/;
+	const per = /^rgba?\(\s*([+-]?[\d.]+)%\s*,?\s*([+-]?[\d.]+)%\s*,?\s*([+-]?[\d.]+)%\s*(?:[,|/]\s*([+-]?[\d.]+)(%?)\s*)?\)$/;
+	const keyword = /^(\w+)$/;
 
-	var rgb = [0, 0, 0, 1];
-	var match;
-	var i;
-	var hexAlpha;
+	let rgb = [0, 0, 0, 1];
+	let match;
+	let i;
+	let hexAlpha;
 
 	if (match = string.match(hex)) {
 		hexAlpha = match[2];
 		match = match[1];
 
 		for (i = 0; i < 3; i++) {
 			// https://jsperf.com/slice-vs-substr-vs-substring-methods-long-string/19
-			var i2 = i * 2;
-			rgb[i] = parseInt(match.slice(i2, i2 + 2), 16);
+			const i2 = i * 2;
+			rgb[i] = Number.parseInt(match.slice(i2, i2 + 2), 16);
 		}
 
 		if (hexAlpha) {
-			rgb[3] = parseInt(hexAlpha, 16) / 255;
+			rgb[3] = Number.parseInt(hexAlpha, 16) / 255;
 		}
 	} else if (match = string.match(abbr)) {
 		match = match[1];
 		hexAlpha = match[3];
 
 		for (i = 0; i < 3; i++) {
-			rgb[i] = parseInt(match[i] + match[i], 16);
+			rgb[i] = Number.parseInt(match[i] + match[i], 16);
 		}
 
 		if (hexAlpha) {
-			rgb[3] = parseInt(hexAlpha + hexAlpha, 16) / 255;
+			rgb[3] = Number.parseInt(hexAlpha + hexAlpha, 16) / 255;
 		}
 	} else if (match = string.match(rgba)) {
 		for (i = 0; i < 3; i++) {
-			rgb[i] = parseInt(match[i + 1], 0);
+			rgb[i] = Number.parseInt(match[i + 1], 10);
 		}
 
 		if (match[4]) {
-			if (match[5]) {
-				rgb[3] = parseFloat(match[4]) * 0.01;
-			} else {
-				rgb[3] = parseFloat(match[4]);
-			}
+			rgb[3] = match[5] ? Number.parseFloat(match[4]) * 0.01 : Number.parseFloat(match[4]);
 		}
 	} else if (match = string.match(per)) {
 		for (i = 0; i < 3; i++) {
-			rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
+			rgb[i] = Math.round(Number.parseFloat(match[i + 1]) * 2.55);
 		}
 
 		if (match[4]) {
-			if (match[5]) {
-				rgb[3] = parseFloat(match[4]) * 0.01;
-			} else {
-				rgb[3] = parseFloat(match[4]);
-			}
+			rgb[3] = match[5] ? Number.parseFloat(match[4]) * 0.01 : Number.parseFloat(match[4]);
 		}
 	} else if (match = string.match(keyword)) {
 		if (match[1] === 'transparent') {
 			return [0, 0, 0, 0];
 		}
 
-		if (!hasOwnProperty.call(colorNames, match[1])) {
+		if (!Object.hasOwnProperty.call(colorNames, match[1])) {
 			return null;
 		}
 
@@ -127,6 +121,7 @@ cs.get.rgb = function (string) {
 	for (i = 0; i < 3; i++) {
 		rgb[i] = clamp(rgb[i], 0, 255);
 	}
+
 	rgb[3] = clamp(rgb[3], 0, 1);
 
 	return rgb;
@@ -137,15 +132,15 @@ cs.get.hsl = function (string) {
 		return null;
 	}
 
-	var hsl = /^hsla?\(\s*([+-]?(?:\d{0,3}\.)?\d+)(?:deg)?\s*,?\s*([+-]?[\d\.]+)%\s*,?\s*([+-]?[\d\.]+)%\s*(?:[,|\/]\s*([+-]?(?=\.\d|\d)(?:0|[1-9]\d*)?(?:\.\d*)?(?:[eE][+-]?\d+)?)\s*)?\)$/;
-	var match = string.match(hsl);
+	const hsl = /^hsla?\(\s*([+-]?(?:\d{0,3}\.)?\d+)(?:deg)?\s*,?\s*([+-]?[\d.]+)%\s*,?\s*([+-]?[\d.]+)%\s*(?:[,|/]\s*([+-]?(?=\.\d|\d)(?:0|[1-9]\d*)?(?:\.\d*)?(?:[eE][+-]?\d+)?)\s*)?\)$/;
+	const match = string.match(hsl);
 
 	if (match) {
-		var alpha = parseFloat(match[4]);
-		var h = ((parseFloat(match[1]) % 360) + 360) % 360;
-		var s = clamp(parseFloat(match[2]), 0, 100);
-		var l = clamp(parseFloat(match[3]), 0, 100);
-		var a = clamp(isNaN(alpha) ? 1 : alpha, 0, 1);
+		const alpha = Number.parseFloat(match[4]);
+		const h = ((Number.parseFloat(match[1]) % 360) + 360) % 360;
+		const s = clamp(Number.parseFloat(match[2]), 0, 100);
+		const l = clamp(Number.parseFloat(match[3]), 0, 100);
+		const a = clamp(Number.isNaN(alpha) ? 1 : alpha, 0, 1);
 
 		return [h, s, l, a];
 	}
@@ -158,24 +153,22 @@ cs.get.hwb = function (string) {
 		return null;
 	}
 
-	var hwb = /^hwb\(\s*([+-]?\d{0,3}(?:\.\d+)?)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?(?=\.\d|\d)(?:0|[1-9]\d*)?(?:\.\d*)?(?:[eE][+-]?\d+)?)\s*)?\)$/;
-	var match = string.match(hwb);
+	const hwb = /^hwb\(\s*([+-]?\d{0,3}(?:\.\d+)?)(?:deg)?\s*,\s*([+-]?[\d.]+)%\s*,\s*([+-]?[\d.]+)%\s*(?:,\s*([+-]?(?=\.\d|\d)(?:0|[1-9]\d*)?(?:\.\d*)?(?:[eE][+-]?\d+)?)\s*)?\)$/;
+	const match = string.match(hwb);
 
 	if (match) {
-		var alpha = parseFloat(match[4]);
-		var h = ((parseFloat(match[1]) % 360) + 360) % 360;
-		var w = clamp(parseFloat(match[2]), 0, 100);
-		var b = clamp(parseFloat(match[3]), 0, 100);
-		var a = clamp(isNaN(alpha) ? 1 : alpha, 0, 1);
+		const alpha = Number.parseFloat(match[4]);
+		const h = ((Number.parseFloat(match[1]) % 360) + 360) % 360;
+		const w = clamp(Number.parseFloat(match[2]), 0, 100);
+		const b = clamp(Number.parseFloat(match[3]), 0, 100);
+		const a = clamp(Number.isNaN(alpha) ? 1 : alpha, 0, 1);
 		return [h, w, b, a];
 	}
 
 	return null;
 };
 
-cs.to.hex = function () {
-	var rgba = swizzle(arguments);
-
+cs.to.hex = function (...rgba) {
 	return (
 		'#' +
 		hexDouble(rgba[0]) +
@@ -187,56 +180,51 @@ cs.to.hex = function () {
 	);
 };
 
-cs.to.rgb = function () {
-	var rgba = swizzle(arguments);
-
+cs.to.rgb = function (...rgba) {
 	return rgba.length < 4 || rgba[3] === 1
 		? 'rgb(' + Math.round(rgba[0]) + ', ' + Math.round(rgba[1]) + ', ' + Math.round(rgba[2]) + ')'
 		: 'rgba(' + Math.round(rgba[0]) + ', ' + Math.round(rgba[1]) + ', ' + Math.round(rgba[2]) + ', ' + rgba[3] + ')';
 };
 
-cs.to.rgb.percent = function () {
-	var rgba = swizzle(arguments);
-
-	var r = Math.round(rgba[0] / 255 * 100);
-	var g = Math.round(rgba[1] / 255 * 100);
-	var b = Math.round(rgba[2] / 255 * 100);
+cs.to.rgb.percent = function (...rgba) {
+	const r = Math.round(rgba[0] / 255 * 100);
+	const g = Math.round(rgba[1] / 255 * 100);
+	const b = Math.round(rgba[2] / 255 * 100);
 
 	return rgba.length < 4 || rgba[3] === 1
 		? 'rgb(' + r + '%, ' + g + '%, ' + b + '%)'
 		: 'rgba(' + r + '%, ' + g + '%, ' + b + '%, ' + rgba[3] + ')';
 };
 
-cs.to.hsl = function () {
-	var hsla = swizzle(arguments);
+cs.to.hsl = function (...hsla) {
 	return hsla.length < 4 || hsla[3] === 1
 		? 'hsl(' + hsla[0] + ', ' + hsla[1] + '%, ' + hsla[2] + '%)'
 		: 'hsla(' + hsla[0] + ', ' + hsla[1] + '%, ' + hsla[2] + '%, ' + hsla[3] + ')';
 };
 
-// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
+// Hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
 // (hwb have alpha optional & 1 is default value)
-cs.to.hwb = function () {
-	var hwba = swizzle(arguments);
-
-	var a = '';
+cs.to.hwb = function (...hwba) {
+	let a = '';
 	if (hwba.length >= 4 && hwba[3] !== 1) {
 		a = ', ' + hwba[3];
 	}
 
 	return 'hwb(' + hwba[0] + ', ' + hwba[1] + '%, ' + hwba[2] + '%' + a + ')';
 };
 
-cs.to.keyword = function (rgb) {
+cs.to.keyword = function (...rgb) {
 	return reverseNames[rgb.slice(0, 3)];
 };
 
-// helpers
-function clamp(num, min, max) {
-	return Math.min(Math.max(min, num), max);
+// Helpers
+function clamp(number_, min, max) {
+	return Math.min(Math.max(min, number_), max);
 }
 
-function hexDouble(num) {
-	var str = Math.round(num).toString(16).toUpperCase();
-	return (str.length < 2) ? '0' + str : str;
+function hexDouble(number_) {
+	const string_ = Math.round(number_).toString(16).toUpperCase();
+	return (string_.length < 2) ? '0' + string_ : string_;
 }
+
+export default cs;