Migrate to Deno (#86)

Big bang migration to Deno 🤯

common/util.ts

@@ -0,0 +1,39 @@
+import { YAML } from "./deps.ts";
+
+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);
+    }
+  };
+}
+
+// TODO: This is naive, may be better to use a proper parser
+const yamlSettingsRegex = /```yaml([^`]+)```/;
+
+export function parseYamlSettings(settingsMarkdown: string): {
+  [key: string]: any;
+} {
+  const match = yamlSettingsRegex.exec(settingsMarkdown);
+  if (!match) {
+    return {};
+  }
+  const yaml = match[1];
+  return YAML.parse(yaml) as {
+    [key: string]: any;
+  };
+}