Merge branch 'main' of https://github.com/mattpocock/beginners-typescript

Author: mattpocock

README.md

@@ -2,6 +2,8 @@
 
 ## Quickstart
 
+Clone this repo or [open in Gitpod](https://gitpod.io/#https://github.com/total-typescript/beginners-typescript).
+
 ```sh
 # Installs all dependenciesG
 npm install

scripts/exercise.js

@@ -42,12 +42,12 @@ chokidar.watch(exerciseFile).on("all", (event, path) => {
     console.clear();
     if (containsVitest) {
       console.log("Running tests...");
-      execSync(`vitest run ${exerciseFile} --passWithNoTests`, {
+      execSync(`vitest run "${exerciseFile}" --passWithNoTests`, {
         stdio: "inherit",
       });
     }
     console.log("Checking types...");
-    execSync(`tsc ${exerciseFile} --noEmit --strict`, {
+    execSync(`tsc "${exerciseFile}" --noEmit --strict`, {
       stdio: "inherit",
     });
     console.log("Typecheck complete. You finished the exercise!");

src/13-catch-blocks.solution.2.ts

@@ -6,9 +6,7 @@ const tryCatchDemo = (state: "fail" | "succeed") => {
       throw new Error("Failure!");
     }
   } catch (e) {
-    if (e instanceof Error) {
-      return e.message;
-    }
+    return (e as Error).message;
   }
 };
 

src/13-catch-blocks.solution.3.ts

@@ -0,0 +1,17 @@
+import { expect, it } from "vitest";
+
+const tryCatchDemo = (state: "fail" | "succeed") => {
+  try {
+    if (state === "fail") {
+      throw new Error("Failure!");
+    }
+  } catch (e) {
+    if (e instanceof Error) {
+      return e.message;
+    }
+  }
+};
+
+it("Should return the message when it fails", () => {
+  expect(tryCatchDemo("fail")).toEqual("Failure!");
+});