Initial commit: Developer Tools MVP with visual editor

- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality

node_modules/es-abstract/5/MakeTime.js

@@ -0,0 +1,24 @@
+'use strict';
+
+var $isFinite = require('math-intrinsics/isFinite');
+
+var timeConstants = require('../helpers/timeConstants');
+var msPerSecond = timeConstants.msPerSecond;
+var msPerMinute = timeConstants.msPerMinute;
+var msPerHour = timeConstants.msPerHour;
+
+var ToInteger = require('./ToInteger');
+
+// https://262.ecma-international.org/5.1/#sec-15.9.1.11
+
+module.exports = function MakeTime(hour, min, sec, ms) {
+	if (!$isFinite(hour) || !$isFinite(min) || !$isFinite(sec) || !$isFinite(ms)) {
+		return NaN;
+	}
+	var h = ToInteger(hour);
+	var m = ToInteger(min);
+	var s = ToInteger(sec);
+	var milli = ToInteger(ms);
+	var t = (h * msPerHour) + (m * msPerMinute) + (s * msPerSecond) + milli;
+	return t;
+};