Conformance: Have activity Log Results chart, Effect done.

src/module/abbreviateNumber.js

@@ -0,0 +1,14 @@
+/**
+ * 將數字轉換成簡寫的形式（1k、1m、1b等）
+ * @param   {number} number
+ * @returns {string}
+ */
+export default function abbreviateNumber(number) {
+  const SI_SYMBOLS = ["", "k", "m", "b", "t"];
+  const tier = Math.log10(Math.abs(number)) / 3 | 0;
+  const suffix = SI_SYMBOLS[tier];
+  const scale = Math.pow(10, tier * 3);
+  const scaledNumber = number / scale;
+
+  return Math.round(scaledNumber) + suffix;
+}