Refactor and renaming

packages/common/util.ts

@@ -0,0 +1,31 @@
+export function countWords(str: string): number {
+  const matches = str.match(/[\w\d\'-]+/gi);
+  return matches ? matches.length : 0;
+}
+
+export function readingTime(wordCount: number): number {
+  // 225 is average word reading speed for adults
+  return Math.ceil(wordCount / 225);
+}
+
+export function safeRun(fn: () => Promise<void>) {
+  fn().catch((e) => {
+    console.error(e);
+  });
+}
+
+export function isMacLike() {
+  return /(Mac|iPhone|iPod|iPad)/i.test(navigator.platform);
+}
+
+export function throttle(func: () => void, limit: number) {
+  let timer: any = null;
+  return function () {
+    if (!timer) {
+      timer = setTimeout(() => {
+        func();
+        timer = null;
+      }, limit);
+    }
+  };
+}