From 1c9aeff1ce3715bc22a3b4eebb8bc5bb7109ade4 Mon Sep 17 00:00:00 2001
From: Pablo Estrada <pabloem@apache.org>
Date: Tue, 4 Jan 2022 13:21:05 -0800
Subject: [PATCH] sketching the core API for JS SDK

---
 sdks/node-ts/src/apache_beam/core.ts | 39 ++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 sdks/node-ts/src/apache_beam/core.ts

diff --git a/sdks/node-ts/src/apache_beam/core.ts b/sdks/node-ts/src/apache_beam/core.ts
new file mode 100644
index 0000000000000..b98c418086571
--- /dev/null
+++ b/sdks/node-ts/src/apache_beam/core.ts
@@ -0,0 +1,39 @@
+class PValue {
+    constructor() {
+    }
+
+    apply(transform: PTransform): PValue {
+        return transform.expand(this);
+    }
+
+    map(callable): PValue {
+        return this.apply(new ParDo(callable));
+    }
+
+}
+
+class Pipeline extends PValue {
+
+}
+
+class PCollection extends PValue {
+
+}
+
+class PTransform {
+    expand(input: PValue): PValue {
+        throw new Error('Method expand has not been implemented.');
+    }
+}
+
+class ParDo extends PTransform {
+    private doFn;
+    constructor(callableOrDoFn) {
+        super()
+        this.doFn = callableOrDoFn;
+    }
+}
+
+class DoFn {
+    
+}
\ No newline at end of file