Jesus sucks

backend/frontend/node_modules/@csstools/convert-colors/CHANGELOG.md

@@ -0,0 +1,27 @@
+# Changes to Convert Colors
+
+### 1.4.0 (January 27, 2018)
+
+- Add LCH conversions
+- Allow fallbacks in RGB conversions (for gray conversions)
+- Add Lab and LCH tests
+- Simplify test array joining
+- Rename references from "LAB" to "Lab"
+
+### 1.3.0 (January 25, 2018)
+
+- Export all converter combinations of `rgb`, `hsl`, `hwb`, `lab`, `hsv`,
+  `xyz`, and also the `rgb2hue` converter
+- Organize library into files
+
+### 1.2.0 (January 24, 2018)
+
+- Export `rgb2lab`, `lab2rgb`, `hsl2lab`, etc. converters
+
+### 1.1.0 (January 22, 2018)
+
+- Export `rgb2hue` converter
+
+### 1.0.0 (January 21, 2018)
+
+- Initial version

backend/frontend/node_modules/@csstools/convert-colors/LICENSE.md

@@ -0,0 +1,108 @@
+# CC0 1.0 Universal
+
+## Statement of Purpose
+
+The laws of most jurisdictions throughout the world automatically confer
+exclusive Copyright and Related Rights (defined below) upon the creator and
+subsequent owner(s) (each and all, an “owner”) of an original work of
+authorship and/or a database (each, a “Work”).
+
+Certain owners wish to permanently relinquish those rights to a Work for the
+purpose of contributing to a commons of creative, cultural and scientific works
+(“Commons”) that the public can reliably and without fear of later claims of
+infringement build upon, modify, incorporate in other works, reuse and
+redistribute as freely as possible in any form whatsoever and for any purposes,
+including without limitation commercial purposes. These owners may contribute
+to the Commons to promote the ideal of a free culture and the further
+production of creative, cultural and scientific works, or to gain reputation or
+greater distribution for their Work in part through the use and efforts of
+others.
+
+For these and/or other purposes and motivations, and without any expectation of
+additional consideration or compensation, the person associating CC0 with a
+Work (the “Affirmer”), to the extent that he or she is an owner of Copyright
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+
+1. Copyright and Related Rights. A Work made available under CC0 may be
+   protected by copyright and related or neighboring rights (“Copyright and
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+   to, the following:
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+   6. database rights (such as those arising under Directive 96/9/EC of the
+      European Parliament and of the Council of 11 March 1996 on the legal
+      protection of databases, and under any national implementation thereof,
+      including any amended or successor version of such directive); and
+   7. other similar, equivalent or corresponding rights throughout the world
+      based on applicable law or treaty, and any national implementations
+      thereof.
+
+2. Waiver. To the greatest extent permitted by, but not in contravention of,
+   applicable law, Affirmer hereby overtly, fully, permanently, irrevocably and
+   unconditionally waives, abandons, and surrenders all of Affirmer’s Copyright
+   and Related Rights and associated claims and causes of action, whether now
+   known or unknown (including existing as well as future claims and causes of
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+   extensions), (iii) in any current or future medium and for any number of
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+   makes the Waiver for the benefit of each member of the public at large and
+   to the detriment of Affirmer’s heirs and successors, fully intending that
+   such Waiver shall not be subject to revocation, rescission, cancellation,
+   termination, or any other legal or equitable action to disrupt the quiet
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+
+3. Public License Fallback. Should any part of the Waiver for any reason be
+   judged legally invalid or ineffective under applicable law, then the Waiver
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+   Affirmer’s express Statement of Purpose. In addition, to the extent the
+   Waiver is so judged Affirmer hereby grants to each affected person a
+   royalty-free, non transferable, non sublicensable, non exclusive,
+   irrevocable and unconditional license to exercise Affirmer’s Copyright and
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+   maximum duration provided by applicable law or treaty (including future time
+   extensions), (iii) in any current or future medium and for any number of
+   copies, and (iv) for any purpose whatsoever, including without limitation
+   commercial, advertising or promotional purposes (the “License”). The License
+   shall be deemed effective as of the date CC0 was applied by Affirmer to the
+   Work. Should any part of the License for any reason be judged legally
+   invalid or ineffective under applicable law, such partial invalidity or
+   ineffectiveness shall not invalidate the remainder of the License, and in
+   such case Affirmer hereby affirms that he or she will not (i) exercise any
+   of his or her remaining Copyright and Related Rights in the Work or (ii)
+   assert any associated claims and causes of action with respect to the Work,
+   in either case contrary to Affirmer’s express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+   1. No trademark or patent rights held by Affirmer are waived, abandoned,
+      surrendered, licensed or otherwise affected by this document.
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+
+For more information, please see
+http://creativecommons.org/publicdomain/zero/1.0/.

backend/frontend/node_modules/@csstools/convert-colors/README.md

@@ -0,0 +1,87 @@
+# Convert Colors [<img src="https://cdn.worldvectorlogo.com/logos/nodejs-icon.svg" alt="Convert Colors" width="90" height="90" align="right">][Convert Colors]
+
+[![NPM Version][npm-img]][npm-url]
+[![Linux Build Status][cli-img]][cli-url]
+[![Windows Build Status][win-img]][win-url]
+
+[Convert Colors] converts colors between RGB, HSL, HWB, Lab, LCH, HSV, and XYZ.
+
+```js
+import convert from '@csstools/convert-colors';
+
+convert.rgb2hsl(100, 100, 100); // [ 0, 0, 100 ]
+convert.rgb2hwb(100, 100, 100); // [ 0, 100, 0 ]
+
+convert.hsl2rgb(0, 0, 100); // [ 0, 100, 0 ]
+convert.hsl2hwb(0, 0, 100); // [ 0, 100, 0 ]
+
+convert.hwb2rgb(0, 100, 0); // [ 0, 0, 100 ]
+convert.hwb2hsl(0, 100, 0); // [ 0, 0, 100 ]
+
+convert.rgb2hue(0, 0, 100); // 240
+```
+
+## Usage
+
+Add [Convert Colors] to your build tool:
+
+```bash
+npm install @csstools/convert-colors --save-dev
+```
+
+## Features
+
+Conversions work by taking arguments that represents a color in one color space
+and returning an array of that same color in another color space.
+
+- rgb2hsl(r, g, b)
+- rgb2hwb(r, g, b)
+- rgb2lab(r, g, b)
+- rgb2lch(r, g, b)
+- rgb2hsv(r, g, b)
+- rgb2xyz(r, g, b)
+- hsl2rgb(h, s, l)
+- hsl2hwb(h, s, l)
+- hsl2lab(h, s, l)
+- hsl2lch(h, s, l)
+- hsl2hsv(h, s, l)
+- hsl2xyz(h, s, l)
+- hwb2rgb(h, w, b)
+- hwb2hsl(h, w, b)
+- hwb2lab(h, w, b)
+- hwb2lch(h, w, b)
+- hwb2hsv(h, w, b)
+- hwb2xyz(h, w, b)
+- lab2rgb(l, a, b)
+- lab2hsl(l, a, b)
+- lab2hwb(l, a, b)
+- lab2lch(l, a, b)
+- lab2hsv(l, a, b)
+- lab2xyz(l, a, b)
+- lch2rgb(l, c, h)
+- lch2hsl(l, c, h)
+- lch2hwb(l, c, h)
+- lch2lab(l, c, h)
+- lch2hsv(l, c, h)
+- lch2xyz(l, c, h)
+- hsv2rgb(h, s, v)
+- hsv2hsl(h, s, v)
+- hsv2hwb(h, s, v)
+- hsv2lab(h, s, v)
+- hsv2lch(h, s, v)
+- hsv2xyz(h, s, v)
+- xyz2rgb(x, y, z)
+- xyz2hsl(x, y, z)
+- xyz2hwb(x, y, z)
+- xyz2lab(x, y, z)
+- xyz2lch(x, y, z)
+- xyz2hsv(x, y, z)
+
+[npm-url]: https://www.npmjs.com/package/@csstools/convert-colors
+[npm-img]: https://img.shields.io/npm/v/@csstools/convert-colors.svg
+[cli-url]: https://travis-ci.org/jonathantneal/convert-colors
+[cli-img]: https://img.shields.io/travis/jonathantneal/convert-colors.svg
+[win-url]: https://ci.appveyor.com/project/jonathantneal/convert-colors
+[win-img]: https://img.shields.io/appveyor/ci/jonathantneal/convert-colors.svg
+
+[Convert Colors]: https://github.com/jonathantneal/convert-colors

backend/frontend/node_modules/@csstools/convert-colors/index.js

@@ -0,0 +1,359 @@
+import { rgb2hsl, hsl2rgb } from './lib/rgb-hsl';
+import { rgb2hwb, hwb2rgb } from './lib/rgb-hwb';
+import { rgb2hsv, hsv2rgb } from './lib/rgb-hsv';
+import { rgb2xyz, xyz2rgb } from './lib/rgb-xyz';
+import { hsl2hsv, hsv2hsl } from './lib/hsl-hsv';
+import { hwb2hsv, hsv2hwb } from './lib/hwb-hsv';
+import { lab2xyz, xyz2lab } from './lib/lab-xyz';
+import { lab2lch, lch2lab } from './lib/lab-lch';
+import { rgb2hue } from './lib/util';
+
+/* Convert between RGB and Lab
+/* ========================================================================== */
+
+function rgb2lab(rgbR, rgbG, rgbB) {
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+	const [ labL, labA, labB ] = xyz2lab(xyzX, xyzY, xyzZ);
+
+	return [ labL, labA, labB ];
+}
+
+function lab2rgb(labL, labA, labB) {
+	const [ xyzX, xyzY, xyzZ ] = lab2xyz(labL, labA, labB);
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+
+	return [ rgbR, rgbG, rgbB ];
+}
+
+/* Convert between RGB and LCH
+/* ========================================================================== */
+
+function rgb2lch(rgbR, rgbG, rgbB) {
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+	const [ labL, labA, labB ] = xyz2lab(xyzX, xyzY, xyzZ);
+	const [ lchL, lchC, lchH ] = lab2lch(labL, labA, labB);
+
+	return [ lchL, lchC, lchH ];
+}
+
+function lch2rgb(lchL, lchC, lchH) {
+	const [ labL, labA, labB ] = lch2lab(lchL, lchC, lchH);
+	const [ xyzX, xyzY, xyzZ ] = lab2xyz(labL, labA, labB);
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+
+	return [ rgbR, rgbG, rgbB ];
+}
+
+/* Convert between HSL and HWB
+/* ========================================================================== */
+
+function hwb2hsl(hwbH, hwbW, hwbB) {
+	const [ hsvH, hsvS, hsvV ] = hwb2hsv(hwbH, hwbW, hwbB);
+	const [ hslH, hslS, hslL ] = hsv2hsl(hsvH, hsvS, hsvV);
+
+	return [ hslH, hslS, hslL ];
+}
+
+function hsl2hwb(hslH, hslS, hslL) {
+	const [ , hsvS, hsvV ] = hsl2hsv(hslH, hslS, hslL);
+	const [ , hwbW, hwbB ] = hsv2hwb(hslH, hsvS, hsvV);
+
+	return [ hslH, hwbW, hwbB ];
+}
+
+/* Convert between HSL and Lab
+/* ========================================================================== */
+
+function hsl2lab(hslH, hslS, hslL) {
+	const [ rgbR, rgbG, rgbB ] = hsl2rgb(hslH, hslS, hslL);
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+	const [ labL, labA, labB ] = xyz2lab(xyzX, xyzY, xyzZ);
+
+	return [ labL, labA, labB ];
+}
+
+function lab2hsl(labL, labA, labB, fallbackhue) {
+	const [ xyzX, xyzY, xyzZ ] = lab2xyz(labL, labA, labB);
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+	const [ hslH, hslS, hslL ] = rgb2hsl(rgbR, rgbG, rgbB, fallbackhue);
+
+	return [ hslH, hslS, hslL ];
+}
+
+/* Convert between HSL and LCH
+/* ========================================================================== */
+
+function hsl2lch(hslH, hslS, hslL) {
+	const [ rgbR, rgbG, rgbB ] = hsl2rgb(hslH, hslS, hslL);
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+	const [ labL, labA, labB ] = xyz2lab(xyzX, xyzY, xyzZ);
+	const [ lchL, lchC, lchH ] = lab2lch(labL, labA, labB);
+
+	return [ lchL, lchC, lchH ];
+}
+
+function lch2hsl(lchL, lchC, lchH, fallbackhue) {
+	const [ labL, labA, labB ] = lch2lab(lchL, lchC, lchH);
+	const [ xyzX, xyzY, xyzZ ] = lab2xyz(labL, labA, labB);
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+	const [ hslH, hslS, hslL ] = rgb2hsl(rgbR, rgbG, rgbB, fallbackhue);
+
+	return [ hslH, hslS, hslL ];
+}
+
+/* Convert between HSL and XYZ
+/* ========================================================================== */
+
+function hsl2xyz(hslH, hslS, hslL) {
+	const [ rgbR, rgbG, rgbB ] = hsl2rgb(hslH, hslS, hslL);
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+
+	return [ xyzX, xyzY, xyzZ ];
+}
+
+function xyz2hsl(xyzX, xyzY, xyzZ, fallbackhue) {
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+	const [ hslH, hslS, hslL ] = rgb2hsl(rgbR, rgbG, rgbB, fallbackhue);
+
+	return [ hslH, hslS, hslL ];
+}
+
+/* Convert between HWB and Lab
+/* ========================================================================== */
+
+function hwb2lab(hwbH, hwbW, hwbB) {
+	const [ rgbR, rgbG, rgbB ] = hwb2rgb(hwbH, hwbW, hwbB);
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+	const [ labL, labA, labB ] = xyz2lab(xyzX, xyzY, xyzZ);
+
+	return [ labL, labA, labB ];
+}
+
+function lab2hwb(labL, labA, labB, fallbackhue) {
+	const [ xyzX, xyzY, xyzZ ] = lab2xyz(labL, labA, labB);
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+	const [ hwbH, hwbW, hwbB ] = rgb2hwb(rgbR, rgbG, rgbB, fallbackhue);
+
+	return [ hwbH, hwbW, hwbB ];
+}
+
+/* Convert between HWB and LCH
+/* ========================================================================== */
+
+function hwb2lch(hwbH, hwbW, hwbB) {
+	const [ rgbR, rgbG, rgbB ] = hwb2rgb(hwbH, hwbW, hwbB);
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+	const [ labL, labA, labB ] = xyz2lab(xyzX, xyzY, xyzZ);
+	const [ lchL, lchC, lchH ] = lab2lch(labL, labA, labB);
+
+	return [ lchL, lchC, lchH ];
+}
+
+function lch2hwb(lchL, lchC, lchH, fallbackhue) {
+	const [ labL, labA, labB ] = lch2lab(lchL, lchC, lchH);
+	const [ xyzX, xyzY, xyzZ ] = lab2xyz(labL, labA, labB);
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+	const [ hwbH, hwbW, hwbB ] = rgb2hwb(rgbR, rgbG, rgbB, fallbackhue);
+
+	return [ hwbH, hwbW, hwbB ];
+}
+
+/* Convert between HWB and XYZ
+/* ========================================================================== */
+
+function hwb2xyz(hwbH, hwbW, hwbB) {
+	const [ rgbR, rgbG, rgbB ] = hwb2rgb(hwbH, hwbW, hwbB);
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+
+	return [ xyzX, xyzY, xyzZ ];
+}
+
+function xyz2hwb(xyzX, xyzY, xyzZ, fallbackhue) {
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+	const [ hwbH, hwbW, hwbB ] = rgb2hwb(rgbR, rgbG, rgbB, fallbackhue);
+
+	return [ hwbH, hwbW, hwbB ];
+}
+
+/* Convert between HSV and Lab
+/* ========================================================================== */
+
+function hsv2lab(hsvH, hsvS, hsvV) {
+	const [ rgbR, rgbG, rgbB ] = hsv2rgb(hsvH, hsvS, hsvV);
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+	const [ labL, labA, labB ] = xyz2lab(xyzX, xyzY, xyzZ);
+
+	return [ labL, labA, labB ];
+}
+
+function lab2hsv(labL, labA, labB, fallbackhue) {
+	const [ xyzX, xyzY, xyzZ ] = lab2xyz(labL, labA, labB);
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+	const [ hsvH, hsvS, hsvV ] = rgb2hsv(rgbR, rgbG, rgbB, fallbackhue);
+
+	return [ hsvH, hsvS, hsvV ];
+}
+
+/* Convert between HSV and LCH
+/* ========================================================================== */
+
+function hsv2lch(hsvH, hsvS, hsvV) {
+	const [ rgbR, rgbG, rgbB ] = hsv2rgb(hsvH, hsvS, hsvV);
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+	const [ labL, labA, labB ] = xyz2lab(xyzX, xyzY, xyzZ);
+	const [ lchL, lchC, lchH ] = lab2lch(labL, labA, labB);
+
+	return [ lchL, lchC, lchH ];
+}
+
+function lch2hsv(lchL, lchC, lchH, fallbackhue) {
+	const [ labL, labA, labB ] = lch2lab(lchL, lchC, lchH);
+	const [ xyzX, xyzY, xyzZ ] = lab2xyz(labL, labA, labB);
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+	const [ hsvH, hsvS, hsvV ] = rgb2hsv(rgbR, rgbG, rgbB, fallbackhue);
+
+	return [ hsvH, hsvS, hsvV ];
+}
+
+/* Convert between HSV and XYZ
+/* ========================================================================== */
+
+function hsv2xyz(hsvH, hsvS, hsvV) {
+	const [ rgbR, rgbG, rgbB ] = hsv2rgb(hsvH, hsvS, hsvV);
+	const [ xyzX, xyzY, xyzZ ] = rgb2xyz(rgbR, rgbG, rgbB);
+
+	return [ xyzX, xyzY, xyzZ ];
+}
+
+function xyz2hsv(xyzX, xyzY, xyzZ, fallbackhue) {
+	const [ rgbR, rgbG, rgbB ] = xyz2rgb(xyzX, xyzY, xyzZ);
+	const [ hsvH, hsvS, hsvV ] = rgb2hsv(rgbR, rgbG, rgbB, fallbackhue);
+
+	return [ hsvH, hsvS, hsvV ];
+}
+
+/* Convert between XYZ and LCH
+/* ========================================================================== */
+
+function xyz2lch(xyzX, xyzY, xyzZ) {
+	const [ labL, labA, labB ] = xyz2lab(xyzX, xyzY, xyzZ);
+	const [ lchL, lchC, lchH ] = lab2lch(labL, labA, labB);
+
+	return [ lchL, lchC, lchH ];
+}
+
+function lch2xyz(lchL, lchC, lchH) {
+	const [ labL, labA, labB ] = lch2lab(lchL, lchC, lchH);
+	const [ xyzX, xyzY, xyzZ ] = lab2xyz(labL, labA, labB);
+
+	return [ xyzX, xyzY, xyzZ ];
+}
+
+/* All Conversions
+/* ========================================================================== */
+
+export {
+	rgb2hsl,
+	rgb2hwb,
+	rgb2lab,
+	rgb2lch,
+	rgb2hsv,
+	rgb2xyz,
+
+	hsl2rgb,
+	hsl2hwb,
+	hsl2lab,
+	hsl2lch,
+	hsl2hsv,
+	hsl2xyz,
+
+	hwb2rgb,
+	hwb2hsl,
+	hwb2lab,
+	hwb2lch,
+	hwb2hsv,
+	hwb2xyz,
+
+	lab2rgb,
+	lab2hsl,
+	lab2hwb,
+	lab2lch,
+	lab2hsv,
+	lab2xyz,
+
+	lch2rgb,
+	lch2hsl,
+	lch2hwb,
+	lch2lab,
+	lch2hsv,
+	lch2xyz,
+
+	hsv2rgb,
+	hsv2hsl,
+	hsv2hwb,
+	hsv2lab,
+	hsv2lch,
+	hsv2xyz,
+
+	xyz2rgb,
+	xyz2hsl,
+	xyz2hwb,
+	xyz2lab,
+	xyz2lch,
+	xyz2hsv,
+
+	rgb2hue
+};
+
+export default {
+	rgb2hsl,
+	rgb2hwb,
+	rgb2lab,
+	rgb2lch,
+	rgb2hsv,
+	rgb2xyz,
+
+	hsl2rgb,
+	hsl2hwb,
+	hsl2lab,
+	hsl2lch,
+	hsl2hsv,
+	hsl2xyz,
+
+	hwb2rgb,
+	hwb2hsl,
+	hwb2lab,
+	hwb2lch,
+	hwb2hsv,
+	hwb2xyz,
+
+	lab2rgb,
+	lab2hsl,
+	lab2hwb,
+	lab2lch,
+	lab2hsv,
+	lab2xyz,
+
+	lch2rgb,
+	lch2hsl,
+	lch2hwb,
+	lch2lab,
+	lch2hsv,
+	lch2xyz,
+
+	hsv2rgb,
+	hsv2hsl,
+	hsv2hwb,
+	hsv2lab,
+	hsv2lch,
+	hsv2xyz,
+
+	xyz2rgb,
+	xyz2hsl,
+	xyz2hwb,
+	xyz2lab,
+	xyz2lch,
+	xyz2hsv,
+
+	rgb2hue
+};

backend/frontend/node_modules/@csstools/convert-colors/package.json

@@ -0,0 +1,70 @@
+{
+  "name": "@csstools/convert-colors",
+  "version": "1.4.0",
+  "description": "Convert colors between RGB, HSL, and HWB",
+  "author": "Jonathan Neal <jonathantneal@hotmail.com>",
+  "license": "CC0-1.0",
+  "repository": "jonathantneal/convert-colors",
+  "homepage": "https://github.com/jonathantneal/convert-colors#readme",
+  "bugs": "https://github.com/jonathantneal/convert-colors/issues",
+  "main": "index.bundle.js",
+  "module": "index.js",
+  "files": [
+    "index.js",
+    "index.bundle.js",
+    "lib"
+  ],
+  "scripts": {
+    "prepublishOnly": "npm test",
+    "pretest": "rollup -c .rollup.js --silent",
+    "test": "echo 'Running tests...'; npm run test:ec && npm run test:js && npm run test:tape",
+    "test:ec": "echint test",
+    "test:js": "eslint *.js --cache --ignore-path .gitignore --quiet",
+    "test:tape": "node .tape"
+  },
+  "engines": {
+    "node": ">=4.0.0"
+  },
+  "devDependencies": {
+    "babel-core": "^6.26.0",
+    "babel-preset-env": "^1.6",
+    "echint": "^4.0",
+    "eslint": "^4.15",
+    "eslint-config-dev": "2.0",
+    "pre-commit": "^1.2",
+    "rollup": "^0.54",
+    "rollup-plugin-babel": "^3.0"
+  },
+  "eslintConfig": {
+    "extends": "dev",
+    "rules": {
+      "max-params": [
+        2,
+        4
+      ]
+    }
+  },
+  "keywords": [
+    "colors",
+    "converts",
+    "conversions",
+    "converting",
+    "css",
+    "rgb",
+    "hsl",
+    "hwb",
+    "lab",
+    "lch",
+    "hsv",
+    "xyz",
+    "red",
+    "green",
+    "blue",
+    "hue",
+    "saturation",
+    "lightness",
+    "whiteness",
+    "blackness",
+    "cie"
+  ]
+}

backend/frontend/node_modules/@csstools/sass-import-resolve/LICENSE.md

@@ -0,0 +1,106 @@
+# CC0 1.0 Universal
+
+## Statement of Purpose
+
+The laws of most jurisdictions throughout the world automatically confer
+exclusive Copyright and Related Rights (defined below) upon the creator and
+subsequent owner(s) (each and all, an “owner”) of an original work of
+authorship and/or a database (each, a “Work”).
+
+Certain owners wish to permanently relinquish those rights to a Work for the
+purpose of contributing to a commons of creative, cultural and scientific works
+(“Commons”) that the public can reliably and without fear of later claims of
+infringement build upon, modify, incorporate in other works, reuse and
+redistribute as freely as possible in any form whatsoever and for any purposes,
+including without limitation commercial purposes. These owners may contribute
+to the Commons to promote the ideal of a free culture and the further
+production of creative, cultural and scientific works, or to gain reputation or
+greater distribution for their Work in part through the use and efforts of
+others.
+
+For these and/or other purposes and motivations, and without any expectation of
+additional consideration or compensation, the person associating CC0 with a
+Work (the “Affirmer”), to the extent that he or she is an owner of Copyright
+and Related Rights in the Work, voluntarily elects to apply CC0 to the Work and
+publicly distribute the Work under its terms, with knowledge of his or her
+Copyright and Related Rights in the Work and the meaning and intended legal
+effect of CC0 on those rights.
+
+1. Copyright and Related Rights. A Work made available under CC0 may be
+	 protected by copyright and related or neighboring rights (“Copyright and
+	 Related Rights”). Copyright and Related Rights include, but are not limited
+	 to, the following:
+	1. the right to reproduce, adapt, distribute, perform, display,
+		 communicate, and translate a Work;
+	2. moral rights retained by the original author(s) and/or performer(s);
+	3. publicity and privacy rights pertaining to a person’s image or likeness
+		 depicted in a Work;
+	4. rights protecting against unfair competition in regards to a Work,
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+	5. rights protecting the extraction, dissemination, use and reuse of data
+		 in a Work;
+	6. database rights (such as those arising under Directive 96/9/EC of the
+		 European Parliament and of the Council of 11 March 1996 on the legal
+		 protection of databases, and under any national implementation thereof,
+		 including any amended or successor version of such directive); and
+	7. other similar, equivalent or corresponding rights throughout the world
+		 based on applicable law or treaty, and any national implementations
+		 thereof.
+
+2. Waiver. To the greatest extent permitted by, but not in contravention of,
+applicable law, Affirmer hereby overtly, fully, permanently, irrevocably and
+unconditionally waives, abandons, and surrenders all of Affirmer’s Copyright
+and Related Rights and associated claims and causes of action, whether now
+known or unknown (including existing as well as future claims and causes of
+action), in the Work (i) in all territories worldwide, (ii) for the maximum
+duration provided by applicable law or treaty (including future time
+extensions), (iii) in any current or future medium and for any number of
+copies, and (iv) for any purpose whatsoever, including without limitation
+commercial, advertising or promotional purposes (the “Waiver”). Affirmer makes
+the Waiver for the benefit of each member of the public at large and to the
+detriment of Affirmer’s heirs and successors, fully intending that such Waiver
+shall not be subject to revocation, rescission, cancellation, termination, or
+any other legal or equitable action to disrupt the quiet enjoyment of the Work
+by the public as contemplated by Affirmer’s express Statement of Purpose.
+
+3. Public License Fallback. Should any part of the Waiver for any reason be
+judged legally invalid or ineffective under applicable law, then the Waiver
+shall be preserved to the maximum extent permitted taking into account
+Affirmer’s express Statement of Purpose. In addition, to the extent the Waiver
+is so judged Affirmer hereby grants to each affected person a royalty-free, non
+transferable, non sublicensable, non exclusive, irrevocable and unconditional
+license to exercise Affirmer’s Copyright and Related Rights in the Work (i) in
+all territories worldwide, (ii) for the maximum duration provided by applicable
+law or treaty (including future time extensions), (iii) in any current or
+future medium and for any number of copies, and (iv) for any purpose
+whatsoever, including without limitation commercial, advertising or promotional
+purposes (the “License”). The License shall be deemed effective as of the date
+CC0 was applied by Affirmer to the Work. Should any part of the License for any
+reason be judged legally invalid or ineffective under applicable law, such
+partial invalidity or ineffectiveness shall not invalidate the remainder of the
+License, and in such case Affirmer hereby affirms that he or she will not (i)
+exercise any of his or her remaining Copyright and Related Rights in the Work
+or (ii) assert any associated claims and causes of action with respect to the
+Work, in either case contrary to Affirmer’s express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+		1. No trademark or patent rights held by Affirmer are waived, abandoned,
+			 surrendered, licensed or otherwise affected by this document.
+		2. Affirmer offers the Work as-is and makes no representations or
+			 warranties of any kind concerning the Work, express, implied, statutory
+			 or otherwise, including without limitation warranties of title,
+			 merchantability, fitness for a particular purpose, non infringement, or
+			 the absence of latent or other defects, accuracy, or the present or
+			 absence of errors, whether or not discoverable, all to the greatest
+			 extent permissible under applicable law.
+		3. Affirmer disclaims responsibility for clearing rights of other persons
+			 that may apply to the Work or any use thereof, including without
+			 limitation any person’s Copyright and Related Rights in the Work.
+			 Further, Affirmer disclaims responsibility for obtaining any necessary
+			 consents, permissions or other rights required for any use of the Work.
+		4. Affirmer understands and acknowledges that Creative Commons is not a
+			 party to this document and has no duty or obligation with respect to
+			 this CC0 or use of the Work.
+
+For more information, please see
+http://creativecommons.org/publicdomain/zero/1.0/.

backend/frontend/node_modules/@csstools/sass-import-resolve/README.md

@@ -0,0 +1,100 @@
+# Sass Import Resolve [<img src="https://jonathantneal.github.io/sass-import-resolve/sass-logo.svg" alt="Sass Logo" width="90" height="90" align="right">][Sass Import Resolve]
+
+[![NPM Version][npm-img]][npm-url]
+[![Linux Build Status][cli-img]][cli-url]
+[![Windows Build Status][win-img]][win-url]
+[![Gitter Chat][git-img]][git-url]
+
+[Sass Import Resolve] resolves the path and contents of Sass imports, following
+the [Sass Import Resolve Specification].
+
+```sh
+npm install @csstools/sass-import-resolve
+```
+
+## The Resolve Method
+
+The `resolve` method takes any path and returns its absolute path, as
+resolved by the [Sass Import Resolve Specification].
+
+```js
+import resolve from '@csstools/sass-import-resolve';
+
+const { file } = resolve('path/to/sass-file');
+```
+
+The `resolve` method may also return the contents of the resolved file.
+
+```js
+const { file, contents } = resolve('path/to/sass-file', {
+  readFile: true
+});
+```
+
+The `resolve` method may also resolve the path from a specific directory.
+
+```js
+const { file } = resolve('sass-file', {
+  cwd: 'path/to'
+});
+```
+
+The `resolve` method may also share its resolved cache.
+
+```js
+const sharedCache = {};
+
+const { file } = resolve('path/to/sass-file', {
+  cache: sharedCache
+});
+
+/* sharedCache {
+  "/absolute/path/to/sass-file": Promise {
+    file,
+    contents (when `readFile` is true)
+  }
+} */
+```
+
+## The Resolve Algorithm
+
+When `@import` is called, the following high-level algorithm is used to resolve
+the location of a file within `url(id)` from `cwd`:
+
+1. if `id` begins with `/`
+   1. `cwd` is the filesystem root
+2. `file` is `cwd/id`
+3. `base` is base path of `file`
+4. `dir` is directory path of `file`
+5. if `base` ends with `.sass`, `.scss`, or `.css`
+   1. test whether `file` exists
+   2. if `base` does not start with `_`
+      1. test whether `dir/_base` exists
+6. otherwise
+   1. test whether `dir/base.scss` exists
+   2. test whether `dir/base.sass` exists
+   3. test whether `dir/base.css` exists
+   4. if `base` does not start with `_`
+      1. test whether `dir/_base.scss` exists
+      2. test whether `dir/_base.sass` exists
+      3. test whether `dir/_base.css` exists
+6. if the length of existing files is `1`
+   1. return the existing file
+7. otherwise, if the length of existing files is greater than `1`
+   1. throw `"It's not clear which file to import"`
+8. otherwise, if `base` does not end with `.css`
+   1. throw `"File to import not found or unreadable"`
+
+See the [Sass Import Resolve Specification] for more details.
+
+[Sass Import Resolve]: https://github.com/jonathantneal/sass-import-resolve
+[Sass Import Resolve Specification]: https://jonathantneal.github.io/sass-import-resolve
+
+[cli-url]: https://travis-ci.org/jonathantneal/sass-import-resolve
+[cli-img]: https://img.shields.io/travis/jonathantneal/sass-import-resolve.svg
+[git-url]: https://gitter.im/postcss/postcss
+[git-img]: https://img.shields.io/badge/chat-gitter-blue.svg
+[npm-url]: https://www.npmjs.com/package/@csstools/sass-import-resolve
+[npm-img]: https://img.shields.io/npm/v/@csstools/sass-import-resolve.svg
+[win-url]: https://ci.appveyor.com/project/jonathantneal/sass-import-resolve
+[win-img]: https://img.shields.io/appveyor/ci/jonathantneal/sass-import-resolve.svg

backend/frontend/node_modules/@csstools/sass-import-resolve/index.js

@@ -0,0 +1,147 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+	value: true
+});
+exports.default = resolve;
+
+var _fs = require('fs');
+
+var _path = require('path');
+
+/* Resolve the absolute path of a file in Sass
+/* ========================================================================== */
+
+function resolve(id, rawopts) {
+	var opts = Object.assign({
+		cache: {},
+		cwd: process.cwd(),
+		readFile: false
+	}, rawopts);
+
+	// if `id` starts with `/`
+	if (starts_with_root(id)) {
+		// `cwd` is the filesystem root
+		opts.cwd = '';
+	}
+
+	// `file` is `cwd/id`
+	var file = (0, _path.join)(opts.cwd, id);
+
+	// `base` is the last segment path of `file`
+	var base = (0, _path.basename)(file);
+
+	// `dir` is all but the last segment path of `file`
+	var dir = (0, _path.dirname)(file);
+
+	var tests = [];
+
+	// if `base` ends with `.sass`, `.scss`, or `.css`
+	if (ends_with_sass_extension(base) || ends_with_css_extension(base)) {
+		// test whether `file` exists
+		tests.push(test_file(file, opts));
+
+		// if `base` does not start with `_`
+		if (!starts_with_partial(base)) {
+			// test whether `dir/_base` exists
+			tests.push(test_file((0, _path.join)(dir, '_' + base), opts));
+		}
+	} else {
+		// otherwise
+		tests.push(
+		// test whether `dir/base.scss` exists
+		test_file((0, _path.join)(dir, base + '.scss'), opts),
+		// test whether `dir/base.sass` exists
+		test_file((0, _path.join)(dir, base + '.sass'), opts),
+		// test whether `dir/base.css` exists
+		test_file((0, _path.join)(dir, base + '.css'), opts));
+
+		// if `base` does not start with `_`
+		if (!starts_with_partial(base)) {
+			tests.push(
+			// test whether `dir/_base.scss` exists
+			test_file((0, _path.join)(dir, '_' + base + '.scss'), opts),
+			// test whether `dir/_base.sass` exists
+			test_file((0, _path.join)(dir, '_' + base + '.sass'), opts),
+			// test whether `dir/_base.css` exists
+			test_file((0, _path.join)(dir, '_' + base + '.css'), opts));
+		}
+	}
+
+	return Promise.all(tests).then(function (test) {
+		return test.filter(function (result) {
+			return result;
+		});
+	}).then(function (files) {
+		// if the length of existing files is `1`
+		if (files.length === 1) {
+			// return the existing file
+			return files[0];
+		}
+
+		// otherwise, if the length of existing files is greater than `1`
+		if (files.length > 1) {
+			// throw `"It's not clear which file to import"`
+			throw new Error('It\'s not clear which file to import');
+		}
+
+		// otherwise, if `base` does not end with `.css`
+		if (!ends_with_css_extension(base)) {
+			// throw `"File to import not found or unreadable"`
+			throw new Error('File to import not found or unreadable');
+		}
+	});
+}
+
+/* Additional tooling
+/* ========================================================================== */
+
+function test_file(file, opts) {
+	opts.cache[file] = opts.cache[file] || new Promise(function (resolvePromise) {
+		if (opts.readFile) {
+			(0, _fs.readFile)(file, 'utf8', function (error, contents) {
+				if (error) {
+					resolvePromise(false);
+				} else {
+					resolvePromise({
+						file: file,
+						contents: contents
+					});
+				}
+			});
+		} else {
+			(0, _fs.stat)(file, function (error, stats) {
+				if (error || !stats.isFile()) {
+					resolvePromise(false);
+				} else {
+					resolvePromise({
+						file: file
+					});
+				}
+			});
+		}
+	});
+
+	return opts.cache[file];
+}
+
+function starts_with_root(id) {
+	return (/^\//.test(id)
+	);
+}
+
+function starts_with_partial(base) {
+	return (/^_/.test(base)
+	);
+}
+
+function ends_with_css_extension(base) {
+	return (/\.css$/i.test(base)
+	);
+}
+
+function ends_with_sass_extension(base) {
+	return (/\.s[ac]ss$/i.test(base)
+	);
+}
+module.exports = exports['default'];

backend/frontend/node_modules/@csstools/sass-import-resolve/index.mjs

@@ -0,0 +1,134 @@
+import { readFile, stat } from 'fs';
+import { basename, dirname, join } from 'path';
+
+/* Resolve the absolute path of a file in Sass
+/* ========================================================================== */
+
+export default function resolve(id, rawopts) {
+	const opts = Object.assign({
+		cache: {},
+		cwd: process.cwd(),
+		readFile: false
+	}, rawopts);
+
+	// if `id` starts with `/`
+	if (starts_with_root(id)) {
+		// `cwd` is the filesystem root
+		opts.cwd = '';
+	}
+
+	// `file` is `cwd/id`
+	const file = join(opts.cwd, id);
+
+	// `base` is the last segment path of `file`
+	const base = basename(file);
+
+	// `dir` is all but the last segment path of `file`
+	const dir = dirname(file);
+
+	const tests = [];
+
+	// if `base` ends with `.sass`, `.scss`, or `.css`
+	if (ends_with_sass_extension(base) || ends_with_css_extension(base)) {
+		// test whether `file` exists
+		tests.push(test_file(file, opts));
+
+		// if `base` does not start with `_`
+		if (!starts_with_partial(base)) {
+			// test whether `dir/_base` exists
+			tests.push(test_file(join(dir, `_${base}`), opts));
+		}
+	} else {
+		// otherwise
+		tests.push(
+			// test whether `dir/base.scss` exists
+			test_file(join(dir, `${base}.scss`), opts),
+			// test whether `dir/base.sass` exists
+			test_file(join(dir, `${base}.sass`), opts),
+			// test whether `dir/base.css` exists
+			test_file(join(dir, `${base}.css`), opts)
+		);
+
+		// if `base` does not start with `_`
+		if (!starts_with_partial(base)) {
+			tests.push(
+				// test whether `dir/_base.scss` exists
+				test_file(join(dir, `_${base}.scss`), opts),
+				// test whether `dir/_base.sass` exists
+				test_file(join(dir, `_${base}.sass`), opts),
+				// test whether `dir/_base.css` exists
+				test_file(join(dir, `_${base}.css`), opts)
+			);
+		}
+	}
+
+	return Promise.all(tests).then(
+		test => test.filter(result => result)
+	).then(files => {
+		// if the length of existing files is `1`
+		if (files.length === 1) {
+			// return the existing file
+			return files[0];
+		}
+
+		// otherwise, if the length of existing files is greater than `1`
+		if (files.length > 1) {
+			// throw `"It's not clear which file to import"`
+			throw new Error('It\'s not clear which file to import');
+		}
+
+		// otherwise, if `base` does not end with `.css`
+		if (!ends_with_css_extension(base)) {
+			// throw `"File to import not found or unreadable"`
+			throw new Error('File to import not found or unreadable');
+		}
+	});
+}
+
+/* Additional tooling
+/* ========================================================================== */
+
+function test_file(file, opts) {
+	opts.cache[file] = opts.cache[file] || new Promise(resolvePromise => {
+		if (opts.readFile) {
+			readFile(file, 'utf8', (error, contents) => {
+				if (error) {
+					resolvePromise(false);
+				} else {
+					resolvePromise({
+						file,
+						contents
+					});
+				}
+			});
+		} else {
+			stat(file, (error, stats) => {
+				if (error || !stats.isFile()) {
+					resolvePromise(false);
+				} else {
+					resolvePromise({
+						file
+					});
+				}
+			});
+		}
+	});
+
+	return opts.cache[file];
+}
+
+function starts_with_root(id) {
+	return /^\//.test(id);
+}
+
+function starts_with_partial(base) {
+	return /^_/.test(base);
+}
+
+function ends_with_css_extension(base) {
+	return /\.css$/i.test(base);
+}
+
+function ends_with_sass_extension(base) {
+	return /\.s[ac]ss$/i.test(base);
+}

backend/frontend/node_modules/@csstools/sass-import-resolve/package.json

@@ -0,0 +1,52 @@
+{
+  "name": "@csstools/sass-import-resolve",
+  "version": "1.0.0",
+  "description": "An algorithm for resolving imports in Sass",
+  "author": "Jonathan Neal <jonathantneal@hotmail.com>",
+  "license": "CC0-1.0",
+  "repository": "jonathantneal/sass-import-resolve",
+  "homepage": "https://github.com/jonathantneal/sass-import-resolve#readme",
+  "bugs": "https://github.com/jonathantneal/sass-import-resolve/issues",
+  "main": "index.js",
+  "module": "index.mjs",
+  "files": [
+    "index.mjs",
+    "index.js"
+  ],
+  "scripts": {
+    "prepublishOnly": "npm start",
+    "start": "babel index.mjs --presets=env --plugins=add-module-exports --out-file index.js",
+    "test": "npm start && npm run test:lint && npm run test:tape",
+    "test:lint": "eslint index.mjs --cache --ignore-pattern .gitignore",
+    "test:tape": "node .tape"
+  },
+  "engines": {
+    "node": ">=4.0.0"
+  },
+  "devDependencies": {
+    "babel-cli": "^6.26.0",
+    "babel-plugin-add-module-exports": "^0.2.1",
+    "babel-preset-env": "^1.6.1",
+    "eslint": "^4.12.1",
+    "eslint-config-dev": "^2.0.0"
+  },
+  "eslintConfig": {
+    "extends": "dev",
+    "rules": {
+      "consistent-return": 0,
+      "max-params": 0,
+      "no-param-reassign": 0
+    }
+  },
+  "keywords": [
+    "sass",
+    "spec",
+    "imports",
+    "resolve",
+    "algorithm",
+    "external",
+    "files",
+    "style",
+    "sheets"
+  ]
+}