First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

client/node_modules/khroma/test/methods/saturation.js

@@ -0,0 +1,27 @@
+
+/* IMPORT */
+
+import {describe} from 'fava';
+import {saturation} from '../../dist/index.js';
+
+/* MAIN */
+
+describe ( 'saturation', it => {
+
+  it ( 'gets the saturation channel of the color', t => {
+
+    const tests = [
+      ['hsl(10, 20%, 30%)', 20],
+      ['rgb(10, 20, 30)', 50],
+      ['rgb(0, 0, 0)', 0],
+      ['#102030', 50],
+      ['#ff0000', 100]
+    ];
+
+    tests.forEach ( ([ color, output ]) => {
+      t.is ( saturation ( color ), output );
+    });
+
+  });
+
+});