add error message for when the index.jsx or index.tsx is not found

lib/compiler.js

@@ -1,5 +1,6 @@
-const { create_dist } = require("./utils");
+const { create_dist, log } = require("./utils");
 const path = require("path");
+const fs = require("fs");
 const loadFilesInfo = require("./actions/loadFilesInfo");
 const toolsFiles = require("./actions/toolsFiles");
 const loadFilesContent = require("./actions/loadFilesContent");
@@ -18,7 +19,14 @@ const distFolder = process.env.DIST_FOLDER || "build";
 function compile_files() {
   create_dist(distFolder);
 
-  const entryFile = path.join(".", "src", "index.tsx");
+  let entryFile = path.join(".", "src", "index.tsx");
+  entryFile = fs.existsSync(entryFile)
+    ? entryFile
+    : path.join(".", "src", "index.jsx");
+  if (!fs.existsSync(entryFile)) {
+    log.error("src/index.tsx or src/index.jsx not found.");
+    process.exit(1);
+  }
 
   // TEST
   // #1 - Load imported files content

package.json

@@ -1,7 +1,7 @@
 {
   "name": "alem",
   "description": "Create web3 applications for NEAR BOS with a focus on performance while using concepts that are based on ReactJS.",
-  "version": "0.0.1-alpha.17",
+  "version": "0.0.1-alpha.18",
   "main": "main.js",
   "types": "index.d.ts",
   "author": "Wenderson Pires - wendersonpires.near",