added query string parser and functional tools

src/utils.js

@@ -1,3 +1,4 @@
+import {mapObj} from './funky.js';
 
 export function noop() {};
 
@@ -82,3 +83,36 @@ export function rangeInclusive(start, end) {
 	return range(Math.min(start, end), Math.max(start, end)+1);
 }
 
+export function getQueryStringParameters (queryString = document.location.search, separator = '&', assignment = '=') {
+	let parameters = {};
+
+	queryString
+	.replace(/(^\?)/,'')
+	.split(separator)
+	.forEach(pair => {
+		pair = pair.split(assignment);
+		parameters[pair[0]] = pair[1];
+	});
+
+	return parameters;
+}
+
+export function getQueryStringObj (queryString = document.location.search, separator = '&', assignment = '=') {
+	return mapObj(getQueryStringParameters(queryString, separator, assignment), parseString);
+}
+
+const braced = /^{.*}$/;
+const bracketed = /^\[.*\]$/;
+
+export function parseString (str) {
+	return typeof str !== 'string' ? str :
+		str.toLowerCase() === 'true' ? true :
+		str.toLowerCase() === 'false' ? false :
+		str.toLowerCase() === 'null' ? null :
+		str.toLowerCase() === 'undefined' ? undefined :
+		!isNaN(Number(str)) ? Number(str) :
+		braced.test(str) || bracketed.test(str) ? JSON.parse(decodeURIComponent(str)) :
+		str;
+}
+
+