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node_modules/camelcase/index.js

@@ -1,56 +1,78 @@
 'use strict';
 
-function preserveCamelCase(str) {
-	var isLastCharLower = false;
+const preserveCamelCase = string => {
+	let isLastCharLower = false;
+	let isLastCharUpper = false;
+	let isLastLastCharUpper = false;
 
-	for (var i = 0; i < str.length; i++) {
-		var c = str.charAt(i);
+	for (let i = 0; i < string.length; i++) {
+		const character = string[i];
 
-		if (isLastCharLower && (/[a-zA-Z]/).test(c) && c.toUpperCase() === c) {
-			str = str.substr(0, i) + '-' + str.substr(i);
+		if (isLastCharLower && /[a-zA-Z]/.test(character) && character.toUpperCase() === character) {
+			string = string.slice(0, i) + '-' + string.slice(i);
 			isLastCharLower = false;
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = true;
 			i++;
+		} else if (isLastCharUpper && isLastLastCharUpper && /[a-zA-Z]/.test(character) && character.toLowerCase() === character) {
+			string = string.slice(0, i - 1) + '-' + string.slice(i - 1);
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = false;
+			isLastCharLower = true;
 		} else {
-			isLastCharLower = (c.toLowerCase() === c);
+			isLastCharLower = character.toLowerCase() === character;
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = character.toUpperCase() === character;
 		}
 	}
 
-	return str;
-}
+	return string;
+};
 
-module.exports = function () {
-	var str = [].map.call(arguments, function (str) {
-		return str.trim();
-	}).filter(function (str) {
-		return str.length;
-	}).join('-');
+const camelCase = (input, options) => {
+	if (!(typeof input === 'string' || Array.isArray(input))) {
+		throw new TypeError('Expected the input to be `string | string[]`');
+	}
 
-	if (!str.length) {
+	options = Object.assign({
+		pascalCase: false
+	}, options);
+
+	const postProcess = x => options.pascalCase ? x.charAt(0).toUpperCase() + x.slice(1) : x;
+
+	if (Array.isArray(input)) {
+		input = input.map(x => x.trim())
+			.filter(x => x.length)
+			.join('-');
+	} else {
+		input = input.trim();
+	}
+
+	if (input.length === 0) {
 		return '';
 	}
 
-	if (str.length === 1) {
-		return str;
+	if (input.length === 1) {
+		return options.pascalCase ? input.toUpperCase() : input.toLowerCase();
 	}
 
-	if (!(/[_.\- ]+/).test(str)) {
-		if (str === str.toUpperCase()) {
-			return str.toLowerCase();
-		}
-
-		if (str[0] !== str[0].toLowerCase()) {
-			return str[0].toLowerCase() + str.slice(1);
-		}
-
-		return str;
+	if (/^[a-z\d]+$/.test(input)) {
+		return postProcess(input);
 	}
 
-	str = preserveCamelCase(str);
+	const hasUpperCase = input !== input.toLowerCase();
 
-	return str
-	.replace(/^[_.\- ]+/, '')
-	.toLowerCase()
-	.replace(/[_.\- ]+(\w|$)/g, function (m, p1) {
-		return p1.toUpperCase();
-	});
+	if (hasUpperCase) {
+		input = preserveCamelCase(input);
+	}
+
+	input = input
+		.replace(/^[_.\- ]+/, '')
+		.toLowerCase()
+		.replace(/[_.\- ]+(\w|$)/g, (m, p1) => p1.toUpperCase());
+
+	return postProcess(input);
 };
+
+module.exports = camelCase;
+module.exports.default = camelCase;