Add save svg-badge directly to gist

This adds the posibility of saving an SVG badge generated by the same
shields.io dirictly to the gist. Instead of prepering a JSON file to
be sent to their service, we use their library directly, which outputs
an SVG file that we can save to the user’s gist.

Filenames ending in `.svg` will use this library automatically.

Additionally there is a major refactoring where the older `node:http`
library has been swapped out for `fetch`.

Also swap from node 16 to node 20

fixes #24

node_modules/color-convert/test/basic.js

@@ -0,0 +1,187 @@
+var convert = require("../index"),
+    assert = require("assert");
+
+assert.deepEqual(convert.rgb2hsl([140, 200, 100]), [96, 48, 59]);
+assert.deepEqual(convert.rgb2hsv([140, 200, 100]), [96, 50, 78]);
+assert.deepEqual(convert.rgb2hwb([140, 200, 100]), [96, 39, 22]);
+assert.deepEqual(convert.rgb2cmyk([140, 200, 100]), [30, 0, 50, 22]);
+assert.deepEqual(convert.rgb2cmyk([0,0,0,1]), [0,0,0,100]);
+assert.deepEqual(convert.rgb2keyword([255, 228, 196]), "bisque");
+assert.deepEqual(convert.rgb2xyz([92, 191, 84]), [25, 40, 15]);
+assert.deepEqual(convert.rgb2lab([92, 191, 84]), [70, -50, 45]);
+assert.deepEqual(convert.rgb2lch([92, 191, 84]), [70, 67, 138]);
+
+assert.deepEqual(convert.hsl2rgb([96, 48, 59]), [140, 201, 100]);
+assert.deepEqual(convert.hsl2hsv([96, 48, 59]), [96, 50, 79]); // colorpicker says [96,50,79]
+assert.deepEqual(convert.hsl2hwb([96, 48, 59]), [96, 39, 21]); // computer round to 21, should be 22
+assert.deepEqual(convert.hsl2cmyk([96, 48, 59]), [30, 0, 50, 21]);
+assert.deepEqual(convert.hsl2keyword([240, 100, 50]), "blue");
+
+assert.deepEqual(convert.hsv2rgb([96, 50, 78]), [139, 199, 99]);
+assert.deepEqual(convert.hsv2hsl([96, 50, 78]), [96, 47, 59]);
+assert.deepEqual(convert.hsv2hsl([0,0,0]), [0,0,0]);
+assert.deepEqual(convert.hsv2hwb([96, 50, 78]), [96, 39, 22]);
+assert.deepEqual(convert.hsv2cmyk([96, 50, 78]), [30, 0, 50, 22]);
+assert.deepEqual(convert.hsv2keyword([240, 100, 100]), "blue");
+
+assert.deepEqual(convert.cmyk2rgb([30, 0, 50, 22]), [139, 199, 99]);
+assert.deepEqual(convert.cmyk2hsl([30, 0, 50, 22]), [96, 47, 59]);
+assert.deepEqual(convert.cmyk2hsv([30, 0, 50, 22]), [96, 50, 78]);
+assert.deepEqual(convert.cmyk2hwb([30, 0, 50, 22]), [96, 39, 22]);
+assert.deepEqual(convert.cmyk2keyword([100, 100, 0, 0]), "blue");
+
+assert.deepEqual(convert.keyword2rgb("blue"), [0, 0, 255]);
+assert.deepEqual(convert.keyword2hsl("blue"), [240, 100, 50]);
+assert.deepEqual(convert.keyword2hsv("blue"), [240, 100, 100]);
+assert.deepEqual(convert.keyword2hwb("blue"), [240, 0, 0]);
+assert.deepEqual(convert.keyword2cmyk("blue"), [100, 100, 0, 0]);
+assert.deepEqual(convert.keyword2lab("blue"), [32, 79, -108]);
+assert.deepEqual(convert.keyword2xyz("blue"), [18, 7, 95]);
+
+assert.deepEqual(convert.xyz2rgb([25, 40, 15]), [97, 190, 85]);
+assert.deepEqual(convert.xyz2rgb([50, 100, 100]), [0, 255, 241]);
+assert.deepEqual(convert.xyz2lab([25, 40, 15]), [69, -48, 44]);
+assert.deepEqual(convert.xyz2lch([25, 40, 15]), [69, 65, 137]);
+
+assert.deepEqual(convert.lab2xyz([69, -48, 44]), [25, 39, 15]);
+assert.deepEqual(convert.lab2rgb([75, 20, -30]), [194, 175, 240]);
+assert.deepEqual(convert.lab2lch([69, -48, 44]), [69, 65, 137]);
+
+assert.deepEqual(convert.lch2lab([69, 65, 137]), [69, -48, 44]);
+assert.deepEqual(convert.lch2xyz([69, 65, 137]), [25, 39, 15]);
+assert.deepEqual(convert.lch2rgb([69, 65, 137]), [98, 188, 83]);
+
+// non-array arguments
+assert.deepEqual(convert.hsl2rgb(96, 48, 59), [140, 201, 100]);
+
+// raw functions
+function round(vals) {
+  for (var i = 0; i < vals.length; i++)
+    vals[i] = vals[i].toFixed(1);
+  return vals;
+}
+
+assert.deepEqual(round(convert.hsl2rgbRaw([96, 48, 59])), [140.4, 200.6, 100.3]);
+assert.deepEqual(round(convert.rgb2hslRaw([140, 200, 100])), [96, 47.6, 58.8]);
+
+assert.deepEqual(round(convert.hsv2rgbRaw([96, 50, 78])), [139.2, 198.9, 99.5]);
+assert.deepEqual(round(convert.rgb2hsvRaw([140, 200, 100])), [96, 50, 78.4]);
+
+assert.deepEqual(round(convert.hwb2rgbRaw([96, 39, 22])), [139.2, 198.9, 99.5]);
+assert.deepEqual(round(convert.rgb2hwbRaw([140, 200, 100])), [96, 39.2, 21.6]);
+
+assert.deepEqual(round(convert.cmyk2rgbRaw([30, 0, 50, 22])), [139.2, 198.9, 99.5]);
+assert.deepEqual(round(convert.rgb2cmykRaw([140, 200, 100])), [30, 0, 50, 21.6]);
+
+assert.deepEqual(round(convert.keyword2rgbRaw("blue")), [0, 0, 255]);
+assert.deepEqual(convert.rgb2keywordRaw([255, 228, 196]), "bisque");
+
+assert.deepEqual(round(convert.hsv2hslRaw([96, 50, 78])), [96, 47, 58.5]);
+assert.deepEqual(round(convert.hsl2hsvRaw([96, 48, 59])), [96, 50, 78.7]);
+
+assert.deepEqual(round(convert.hsl2hsvRaw([96, 48, 59])), [96, 50, 78.7]);
+
+assert.deepEqual(round(convert.xyz2rgbRaw([25, 40, 15])), [97.4, 189.9, 85]);
+assert.deepEqual(round(convert.rgb2xyzRaw([92, 191, 84])), [24.6, 40.2, 14.8]);
+
+assert.deepEqual(round(convert.rgb2labRaw([92, 191, 84])), [69.6, -50.1, 44.6]);
+
+// hashed
+var val = [140, 200, 100];
+assert.deepEqual(convert["rgb"]["hsl"](val), convert.rgb2hsl(val));
+assert.deepEqual(convert["rgb"]["hsv"](val), convert.rgb2hsv(val));
+assert.deepEqual(convert["rgb"]["hwb"](val), convert.rgb2hwb(val));
+assert.deepEqual(convert["rgb"]["cmyk"](val), convert.rgb2cmyk(val));
+assert.deepEqual(convert["rgb"]["xyz"](val), convert.rgb2xyz(val));
+assert.deepEqual(convert["rgb"]["lab"](val), convert.rgb2lab(val));
+assert.deepEqual(convert["rgb"]["keyword"]([255, 228, 196]), "bisque");
+
+val = [96, 48, 59];
+assert.deepEqual(convert["hsl"]["rgb"](val), convert.hsl2rgb(val));
+assert.deepEqual(convert["hsl"]["hsv"](val), convert.hsl2hsv(val));
+assert.deepEqual(convert["hsl"]["hwb"](val), convert.hsl2hwb(val));
+assert.deepEqual(convert["hsl"]["cmyk"](val), convert.hsl2cmyk(val));
+assert.deepEqual(convert["hsl"]["keyword"](val), convert.hsl2keyword(val  ));
+
+val = [96, 50, 78];
+assert.deepEqual(convert["hsv"]["rgb"](val), convert.hsv2rgb(val));
+assert.deepEqual(convert["hsv"]["hsl"](val), convert.hsv2hsl(val));
+assert.deepEqual(convert["hsv"]["hwb"](val), convert.hsv2hwb(val));
+assert.deepEqual(convert["hsv"]["cmyk"](val), convert.hsv2cmyk(val));
+assert.deepEqual(convert["hsv"]["keyword"](val), convert.hsv2keyword(val));
+
+val = [30, 0, 50, 22];
+assert.deepEqual(convert["cmyk"]["rgb"](val), convert.cmyk2rgb(val));
+assert.deepEqual(convert["cmyk"]["hsl"](val), convert.cmyk2hsl(val));
+assert.deepEqual(convert["cmyk"]["hsv"](val), convert.cmyk2hsv(val));
+assert.deepEqual(convert["cmyk"]["hwb"](val), convert.cmyk2hwb(val));
+assert.deepEqual(convert["cmyk"]["keyword"](val), convert.cmyk2keyword(val));
+
+val = "blue";
+assert.deepEqual(convert["keyword"]["rgb"](val), convert.keyword2rgb(val));
+assert.deepEqual(convert["keyword"]["hsl"](val), convert.keyword2hsl(val));
+assert.deepEqual(convert["keyword"]["hsv"](val), convert.keyword2hsv(val));
+assert.deepEqual(convert["keyword"]["hwb"](val), convert.keyword2hwb(val));
+assert.deepEqual(convert["keyword"]["cmyk"](val), convert.keyword2cmyk(val));
+assert.deepEqual(convert["keyword"]["lab"](val), convert.keyword2lab(val));
+assert.deepEqual(convert["keyword"]["xyz"](val), convert.keyword2xyz(val));
+
+val = [25, 40, 15]
+assert.deepEqual(convert["xyz"]["rgb"](val), convert.xyz2rgb(val));
+assert.deepEqual(convert["xyz"]["lab"](val), convert.xyz2lab(val));
+
+val = [69, -48, 44];
+assert.deepEqual(convert["lab"]["xyz"](val), [25, 39, 15]);
+
+
+// converter
+var converter = convert();
+
+var vals = [140, 200, 100];
+converter.rgb(140, 200, 100);
+
+assert.deepEqual(converter.hsl(), convert.rgb2hsl(vals));
+assert.deepEqual(converter.hsv(), convert.rgb2hsv(vals));
+assert.deepEqual(converter.cmyk(), convert.rgb2cmyk(vals));
+assert.deepEqual(converter.rgb(), vals);
+assert.deepEqual(converter.rgb([255, 228, 196]).keyword(), "bisque");
+
+vals = [96, 48, 59];
+converter.hsl(vals);
+assert.deepEqual(converter.rgb(), convert.hsl2rgb(vals));
+assert.deepEqual(converter.hsv(), convert.hsl2hsv(vals));
+assert.deepEqual(converter.cmyk(), convert.hsl2cmyk(vals));
+assert.deepEqual(converter.keyword(), convert.hsl2keyword(vals));
+
+// hwb
+// http://dev.w3.org/csswg/css-color/#hwb-examples
+
+// all extrem value should give black, white or grey
+for(var angle = 0; angle <= 360; angle ++) {
+  assert.deepEqual(convert.hwb2rgb([angle, 0, 100]), [0, 0, 0]);
+  assert.deepEqual(convert.hwb2rgb([angle, 100, 0]), [255, 255, 255]);
+  assert.deepEqual(convert.hwb2rgb([angle, 100, 100]), [128, 128, 128]);
+}
+
+assert.deepEqual(convert.hwb2rgb([0, 0, 0]), [255,0,0]);
+assert.deepEqual(convert.hwb2rgb([0, 20, 40]), [153, 51, 51]);
+assert.deepEqual(convert.hwb2rgb([0, 40, 40]), [153, 102, 102]);
+assert.deepEqual(convert.hwb2rgb([0, 40, 20]), [204, 102, 102]);
+
+assert.deepEqual(convert.hwb2rgb([120, 0, 0]), [0,255,0]);
+assert.deepEqual(convert.hwb2rgb([120, 20, 40]), [51, 153, 51]);
+assert.deepEqual(convert.hwb2rgb([120, 40, 40]), [102, 153, 102]);
+assert.deepEqual(convert.hwb2rgb([120, 40, 20]), [102, 204, 102]);
+
+assert.deepEqual(convert.hwb2rgb([240, 0, 0]), [0,0,255]);
+assert.deepEqual(convert.hwb2rgb([240, 20, 40]), [51, 51, 153]);
+assert.deepEqual(convert.hwb2rgb([240, 40, 40]), [102, 102, 153]);
+assert.deepEqual(convert.hwb2rgb([240, 40, 20]), [102, 102, 204]);
+
+
+// black should always stay black
+val = [0, 0, 0];
+assert.deepEqual(convert.hsl2hsv(val), val);
+assert.deepEqual(convert.hsl2rgb(val), val);
+assert.deepEqual(convert.hsl2hwb(val), [0, 0, 100]);
+assert.deepEqual(convert.hsl2cmyk(val), [0, 0, 0, 100]);

node_modules/color-convert/test/speed.js

@@ -0,0 +1,23 @@
+var convert = require("../index");
+
+var converter = convert();
+
+var times = 10000;
+
+console.time("cached");
+converter.rgb(10, 2, 30);
+for(var i = 0; i < times; i++) {
+   converter.hsv();
+   converter.hsl();
+   converter.cmyk();
+}
+console.timeEnd("cached");
+
+console.time("uncached");
+for(var i = 0; i < times; i++) {
+   convert.rgb2hsl(10, 2, 30);
+   convert.rgb2hsv(10, 2, 30);
+   convert.rgb2cmyk(10, 2, 30);
+}
+console.timeEnd("uncached");
+