Fix tsconfig path loading bug and add tests

Signed-off-by: Zabil Cheriya Maliackal <zabilcm@gmail.com>

e2e/package.json

@@ -12,6 +12,7 @@
   "devDependencies": {
     "@getgauge/cli": "latest",
     "@types/node": "latest",
-    "taiko": "^1.4.0"
+    "taiko": "^1.4.0",
+    "tsconfig-paths": "^4.2.0"
   }
 }

e2e/src/VowelCounter.ts

@@ -0,0 +1,17 @@
+export default class VowelCounter {
+  private vowels: string[];
+
+  constructor(vowels: string[]) {
+    this.vowels = vowels;
+  }
+
+  countVowels(word: string): number {
+    let count = 0;
+    for (const char of word) {
+      if (this.vowels.includes(char.toLowerCase())) {
+        count++;
+      }
+    }
+    return count;
+  }
+}

e2e/tests/implementation.ts

@@ -1,17 +1,21 @@
 import * as assert from "node:assert";
+import VowelCounter from "@lib/VowelCounter";
 import { DataStoreFactory, Step, type Table } from "gauge-ts";
 
 class Implementation {
   static vowelsCount = (word: string): number => {
-    const vowels = DataStoreFactory.getSpecDataStore().get(
-      "vowels",
-    ) as string[];
-    return word.split("").filter((c) => vowels.includes(c)).length;
+    const counter = DataStoreFactory.getSpecDataStore().get(
+      "counter",
+    ) as VowelCounter;
+    return counter.countVowels(word);
   };
 
   @Step("Vowels in English language are <aeiou>.")
   public async listVowels(vowels: string) {
-    DataStoreFactory.getSpecDataStore().put("vowels", vowels.split(""));
+    DataStoreFactory.getSpecDataStore().put(
+      "counter",
+      new VowelCounter(vowels.split("")),
+    );
   }
 
   @Step("The word <gauge> has <3> vowels.")

e2e/tsconfig.json

@@ -7,7 +7,10 @@
     "strict": true,
     "moduleResolution": "node",
     "experimentalDecorators": true,
-    "emitDecoratorMetadata": true
+    "emitDecoratorMetadata": true,
+    "paths": {
+      "@lib/*": ["./src/*"]
+    }
   },
   "include": ["tests/**/*", "gen/**/*"],
   "exclude": ["node_modules/"]

gauge-ts/launcher.mjs

@@ -1,5 +1,8 @@
 #!/usr/bin/env node
 
+import { createRequire } from "node:module";
+const require = createRequire(import.meta.url);
+
 const version = process.versions.node.split(".");
 if (Number.parseInt(version[0]) < 20) {
   throw new Error(