First commit.

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

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

@@ -0,0 +1,26 @@
+
+/* IMPORT */
+
+import {describe} from 'fava';
+import {alpha} from '../../dist/index.js';
+
+/* MAIN */
+
+describe ( 'alpha', it => {
+
+  it ( 'gets the alpha channel of the color', t => {
+
+    const tests = [
+      ['rgba(10, 20, 30)', 1],
+      ['rgba(10, 20, 30, 0.1)', 0.1],
+      ['#10203040', 0.2509803922],
+      ['hsla(10, 20%, 30%, 0.5)', 0.5]
+    ];
+
+    tests.forEach ( ([ color, output ]) => {
+      t.is ( alpha ( color ), output );
+    });
+
+  });
+
+});