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/fork-ts-checker-webpack-plugin/lib/utils/array/flatten.d.ts

@@ -0,0 +1,2 @@
+declare function flatten<T>(matrix: T[][]): T[];
+export default flatten;

node_modules/fork-ts-checker-webpack-plugin/lib/utils/array/flatten.js

@@ -0,0 +1,6 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+function flatten(matrix) {
+    return matrix.reduce((flatten, array) => flatten.concat(array), []);
+}
+exports.default = flatten;

node_modules/fork-ts-checker-webpack-plugin/lib/utils/array/intersect.d.ts

@@ -0,0 +1,2 @@
+declare function intersect<T>(arrayA?: T[], arrayB?: T[]): T[];
+export default intersect;

node_modules/fork-ts-checker-webpack-plugin/lib/utils/array/intersect.js

@@ -0,0 +1,6 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+function intersect(arrayA = [], arrayB = []) {
+    return arrayA.filter((item) => arrayB.includes(item));
+}
+exports.default = intersect;

node_modules/fork-ts-checker-webpack-plugin/lib/utils/array/substract.d.ts

@@ -0,0 +1,2 @@
+declare function subtract<T>(arrayA?: T[], arrayB?: T[]): T[];
+export default subtract;

node_modules/fork-ts-checker-webpack-plugin/lib/utils/array/substract.js

@@ -0,0 +1,6 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+function subtract(arrayA = [], arrayB = []) {
+    return arrayA.filter((item) => !arrayB.includes(item));
+}
+exports.default = subtract;

node_modules/fork-ts-checker-webpack-plugin/lib/utils/array/unique.d.ts

@@ -0,0 +1,2 @@
+declare function unique<T>(array: T[]): T[];
+export default unique;

node_modules/fork-ts-checker-webpack-plugin/lib/utils/array/unique.js

@@ -0,0 +1,6 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+function unique(array) {
+    return Array.from(new Set(array));
+}
+exports.default = unique;