chore(sync): fix sync to use try catch (#3)

#### What this PR does / why we need it:

As per title.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,14 +1,3 @@
-<!--  Thanks for sending a pull request! -->
-
 #### What this PR does / why we need it:
 
 #### Which issue(s) will this PR fix?:
-
-<!--
-(Optional) Automatically closes linked issue when PR is merged.
-Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
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-
-Fixes #
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-#### Additional comments?:

workspace/sync-trustwallet-assets/src/sync.ts

@@ -44,15 +44,15 @@ export abstract class Sync {
 
   async shouldWrite(dir: string, info: Partial<Info>): Promise<boolean> {
     // Make sure logo.png and info.json exists
-    const fromLogoStats = await stat(`${this.from}/${dir}/logo.png`);
-    const fromInfoStats = await stat(`${this.from}/${dir}/info.json`);
-    if (!fromLogoStats.isFile() || !fromInfoStats.isFile()) return false;
+    const hasFromLogo = await hasFile(`${this.from}/${dir}/logo.png`);
+    const hasFromInfo = await hasFile(`${this.from}/${dir}/info.json`);
+    if (!hasFromLogo || !hasFromInfo) return false;
 
     // If README.md and logo.png do not exist on the other side, write it
     const namespace = this.getNamespace(info);
-    const toLogoStats = await stat(`${this.to}/${namespace}/logo.png`);
-    const toReadmeStats = await stat(`${this.to}/${namespace}/README.md`);
-    if (!toLogoStats.isFile() || !toReadmeStats.isFile()) return true;
+    const hasToLogo = await hasFile(`${this.to}/${namespace}/logo.png`);
+    const hasToReadme = await hasFile(`${this.to}/${namespace}/README.md`);
+    if (!hasToLogo || !hasToReadme) return true;
 
     // Otherwise, allow overwriting if the author is Frontmatter Bot
     const name = await getAuthorName(`${this.to}/${namespace}/README.md`);
@@ -80,6 +80,13 @@ export abstract class Sync {
   }
 }
 
+function hasFile(filepath: string): Promise<boolean> {
+  return stat(filepath).then(
+    () => true,
+    () => false,
+  );
+}
+
 export class Eip155Sync extends Sync {
   async write(dir: string, info: Partial<Info>): Promise<void> {
     const namespace = this.getNamespace(info);