Add math mod for lib

math/.gitignore

@@ -0,0 +1,7 @@
+/target
+**/*.rs.bk
+Cargo.lock
+bin/
+pkg/
+wasm-pack.log
+.cargo-ok

math/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "math"
+version = "0.1.0"
+authors = ["Sambo Chea <sombochea@cubetiqs.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

math/src/lib.rs

@@ -0,0 +1,16 @@
+mod math {
+    #[allow(dead_code)]
+    pub fn sum(a: i32, b: i32) -> i32 {
+        a + b
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        assert_eq!(math::sum(10, 10), 20);
+    }
+}

src/lib.rs

@@ -3,7 +3,6 @@ use wasm_bindgen::prelude::*;
 extern crate web_sys;
 
 mod utils;
-mod main;
 
 // When the `wee_alloc` feature is enabled, use `wee_alloc` as the global
 // allocator.

src/main.rs

@@ -1,11 +0,0 @@
-fn main() {
-    let a = 10;
-    let b = 5;
-    let sum = sum(a, b);
-
-    println!("Sum of {} + {} = {}", a, b, sum);
-}
-
-pub fn sum(a: i32, b: i32) -> i32 {
-    a + b
-}

www/index.ts

@@ -3,3 +3,6 @@ import * as wasm from "./../pkg/wasmweb_sample"
 
 wasm.greet()
 wasm.log("[WEB] external logging...")
+
+const sum = wasm.just_sum()
+console.log("Sum of number", sum)