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/postcss-flexbugs-fixes/CHANGELOG.md

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+## 5.0.1
+* Moving postcss to peer dependencies [#74](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/74)
+
+## 5.0.1
+* Adding postcss as dependency [#74](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/74)
+
+## 5.0.0
+* upgrade to postcss 8 [#71](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/71)
+
+## 4.2.1
+* Fix `calc` regex [#69](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/69)
+
+## 4.2.0
+* Don't change values that reference custom props [#64](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/64)
+
+## 4.1.0
+* Add option to disable bug fixes [#53](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/53)
+
+## 4.0.0
+* upgrade to postcss 7
+
+## 3.3.1
+* Autoremoval of 0% Basis [#46](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/46). More context [here](https://github.com/luisrudge/postcss-flexbugs-fixes/issues/45#issuecomment-385070879)
+
+## 3.3.0
+* Revert Autoremoval of 0% Basis [#43](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/43)
+
+## 3.2.0
+* Set flex basis if second value is not a number [#41](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/41)
+
+## 3.1.0
+* Fix safari issues with flex-basis [#38](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/38)
+
+## 3.0.0
+* upgrade to postcss 6
+
+## 2.1.0
+* Prevent mutating value when flex value is one of `['none', 'auto', 'content', 'inherit', 'initial', 'unset']`
+
+## 2.0.0
+* upgrade to postcss 5
+
+## 1.1.0
+* Ignore flex set to none [#24](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/24)
+* The default value of flex-basis is 0% [#22](https://github.com/luisrudge/postcss-flexbugs-fixes/pull/22)
+
+## 1.0
+* Initial release

node_modules/postcss-flexbugs-fixes/LICENSE

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+The MIT License (MIT)
+
+Copyright 2015 Luis Rudge <luis@luisrudge.net>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

node_modules/postcss-flexbugs-fixes/README.md

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+# PostCSS Flexbugs Fixes [![Build Status][ci-img]][ci]
+[PostCSS] plugin This project tries to fix all of [flexbug's](https://github.com/philipwalton/flexbugs) issues.
+
+## bug [4](https://github.com/philipwalton/flexbugs/blob/master/README.md#4-flex-shorthand-declarations-with-unitless-flex-basis-values-are-ignored)
+### Input
+
+```css
+.foo { flex: 1; }
+.bar { flex: 1 1; }
+.foz { flex: 1 1 0; }
+.baz { flex: 1 1 0px; }
+```
+
+### Output
+
+```css
+.foo { flex: 1 1; }
+.bar { flex: 1 1; }
+.foz { flex: 1 1; }
+.baz { flex: 1 1; }
+```
+
+## bug [6](https://github.com/philipwalton/flexbugs/blob/master/README.md#6-the-default-flex-value-has-changed)
+### Input
+
+```css
+.foo { flex: 1; }
+```
+
+### Output
+
+```css
+.foo { flex: 1 1 0%; }
+```
+
+> This only fixes css classes that have the `flex` property set. To fix elements that are contained inside a flexbox container, use this global rule:
+```css
+* {
+    flex-shrink: 1;
+}
+```
+
+## bug [8.1.a](https://github.com/philipwalton/flexbugs/blob/master/README.md#8-flex-basis-doesnt-support-calc)
+### Input
+
+```css
+.foo { flex: 1 0 calc(1vw - 1px); }
+```
+
+### Output
+
+```css
+.foo {
+  flex-grow: 1;
+  flex-shrink: 0;
+  flex-basis: calc(1vw - 1px);
+}
+```
+
+## Usage
+
+```js
+postcss([require('postcss-flexbugs-fixes')]);
+```
+
+You can also disable bugs individually, possible keys `bug4`, `bug6` and `bug8a`.
+```js
+var plugin = require('postcss-flexbugs-fixes');
+postcss([plugin({ bug6: false })]);
+```
+
+See [PostCSS] docs for examples for your environment.
+
+[postcss]: https://github.com/postcss/postcss
+[ci-img]: https://travis-ci.org/luisrudge/postcss-flexbugs-fixes.svg
+[ci]: https://travis-ci.org/luisrudge/postcss-flexbugs-fixes

node_modules/postcss-flexbugs-fixes/bugs/bug4.js

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+var postcss = require('postcss');
+
+function shouldSetZeroBasis(basisValue) {
+  if (!basisValue) {
+    return false;
+  }
+  return basisValue === '0' || basisValue.replace(/\s/g, '') === '0px';
+}
+
+function properBasis(basis) {
+  if (shouldSetZeroBasis(basis)) {
+    return '0%';
+  }
+  return basis;
+}
+
+module.exports = function(decl) {
+  if (decl.prop === 'flex') {
+    var values = postcss.list.space(decl.value);
+
+    // set default values
+    var flexGrow = '0';
+    var flexShrink = '1';
+    var flexBasis = '0%';
+
+    if (values[0]) {
+      flexGrow = values[0];
+    }
+
+    if (values[1]) {
+      if (!isNaN(values[1])) {
+        flexShrink = values[1];
+      } else {
+        flexBasis = values[1];
+      }
+    }
+
+    if (values[2]) {
+      flexBasis = values[2];
+    }
+
+    decl.value = flexGrow + ' ' + flexShrink + ' ' + properBasis(flexBasis);
+  }
+};

node_modules/postcss-flexbugs-fixes/bugs/bug6.js

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+var postcss = require('postcss');
+
+module.exports = function(decl) {
+  if (decl.prop === 'flex') {
+    var values = postcss.list.space(decl.value);
+    var flexGrow = values[0];
+    var flexShrink = values[1] || '1';
+    var flexBasis = values[2] || '0%';
+    // Safari seems to hate '0%' and the others seems to make do with a nice value when basis is missing,
+    // so if we see a '0%', just remove it.  This way it'll get adjusted for any other cases where '0%' is
+    // already defined somewhere else.
+    if (flexBasis === '0%') flexBasis = null;
+    decl.value =
+      flexGrow + ' ' + flexShrink + (flexBasis ? ' ' + flexBasis : '');
+  }
+};

node_modules/postcss-flexbugs-fixes/bugs/bug81a.js

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+var postcss = require('postcss');
+
+module.exports = function(decl) {
+  var regex = /(\d{1,}) (\d{1,}) (calc\(.*\))/g;
+  var matches = regex.exec(decl.value);
+  if (decl.prop === 'flex' && matches) {
+    var grow = postcss.decl({
+      prop: 'flex-grow',
+      value: matches[1],
+      source: decl.source
+    });
+    var shrink = postcss.decl({
+      prop: 'flex-shrink',
+      value: matches[2],
+      source: decl.source
+    });
+    var basis = postcss.decl({
+      prop: 'flex-basis',
+      value: matches[3],
+      source: decl.source
+    });
+    decl.parent.insertBefore(decl, grow);
+    decl.parent.insertBefore(decl, shrink);
+    decl.parent.insertBefore(decl, basis);
+    decl.remove();
+  }
+};

node_modules/postcss-flexbugs-fixes/index.js

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+var bug4 = require('./bugs/bug4');
+var bug6 = require('./bugs/bug6');
+var bug81a = require('./bugs/bug81a');
+
+var doNothingValues = [
+  'none',
+  'auto',
+  'content',
+  'inherit',
+  'initial',
+  'unset'
+];
+
+module.exports = function(opts) {
+  var options = Object.assign({ bug4: true, bug6: true, bug81a: true }, opts);
+
+  return {
+    postcssPlugin: 'postcss-flexbugs-fixes',
+    Once: function(css, postcss) {
+      css.walkDecls(function(d) {
+        if (d.value.indexOf('var(') > -1) {
+          return;
+        }
+        if (d.value === 'none') {
+          return;
+        }
+        var values = postcss.list.space(d.value);
+        if (doNothingValues.indexOf(d.value) > 0 && values.length === 1) {
+          return;
+        }
+        if (options.bug4) {
+          bug4(d);
+        }
+        if (options.bug6) {
+          bug6(d);
+        }
+        if (options.bug81a) {
+          bug81a(d);
+        }
+      })
+    }
+  };
+};
+
+module.exports.postcss = true;

node_modules/postcss-flexbugs-fixes/package.json

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+{
+    "name": "postcss-flexbugs-fixes",
+    "version": "5.0.2",
+    "description": "PostCSS plugin This project tries to fix all of flexbug's issues",
+    "keywords": [
+        "postcss",
+        "css",
+        "postcss-plugin",
+        "flexbugs",
+        "flexbox",
+        "flex"
+    ],
+    "author": "Luis Rudge <luis@luisrudge.net>",
+    "license": "MIT",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/luisrudge/postcss-flexbugs-fixes.git"
+    },    
+    "main": "index.js",
+    "files": [
+        "bugs",
+        "index.js"
+    ],
+    "peerDependencies": {
+        "postcss": "^8.1.4"
+    },
+    "devDependencies": {
+        "chai": "^4.2.0",
+        "gulp": "^4.0.2",
+        "gulp-eslint": "^6.0.0",
+        "gulp-mocha": "^7.0.2"
+    },
+    "scripts": {
+        "test": "gulp"
+    }
+}