First example of a wasm plugin with wasmer

crates/example-runner/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "example-runner"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+wasmer = "4.2.5"

crates/example-runner/src/main.rs

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+use wasmer::{imports, Instance, Module, Store, Value};
+
+static WASM: &[u8] =
+    include_bytes!("../../../target/wasm32-unknown-unknown/debug/example_plugin.wasm");
+
+fn main() {
+    let mut store = Store::default();
+    let module = Module::new(&store, WASM).expect("failed to load Wasm module");
+
+    let import_object = imports! {};
+    let instance = Instance::new(&mut store, &module, &import_object)
+        .expect("failed to instantiate Wasm module");
+    let add = instance
+        .exports
+        .get_function("add")
+        .expect("failed to bind function add");
+    let three = add
+        .call(&mut store, &[Value::I32(1), Value::I32(2)])
+        .expect("failed to execute add");
+    let three = three.first().unwrap().unwrap_i32();
+    println!("three: {}", three); // "three: 3"
+}