my first transformer

Author: gnlow

Diff for: package.json

@@ -10,7 +10,8 @@
     "ts-node": "^9.1.1"
   },
   "scripts": {
-    "start": "ts-node --compiler ttypescript source.ts"
+    "start": "ts-node --compiler ttypescript source.ts",
+    "build": "ttsc"
   },
   "repository": {
     "type": "git",

Diff for: source.js

@@ -0,0 +1,2 @@
+var hello = "world";
+console.log(hello);

Diff for: source.ts

@@ -1 +1,2 @@
-console.log("hello")
+const hello = "test"
+console.log(hello)

Diff for: transform.ts

@@ -2,6 +2,10 @@ import * as ts from 'typescript';
 
 const transformer = (program: ts.Program): ts.TransformerFactory<ts.SourceFile> => context => sourceFile => {
   const visitor = (node: ts.Node): ts.Node => {
+    if (ts.isVariableDeclaration(node)) {
+      return ts.updateVariableDeclaration(node, node.name, node.type, ts.createStringLiteral('world'));
+    }
+
     console.log(node.kind, `\t# ts.SyntaxKind.${ts.SyntaxKind[node.kind]}`);
     return ts.visitEachChild(node, visitor, context);
   };