Apply suggestions from code review

Co-authored-by: Ivan Enderlin <ivan@mnt.io>

lib/js-api/src/env.rs

@@ -45,7 +45,6 @@ impl From<ExportError> for HostEnvInitError {
 ///     #[wasmer(export(optional = true, alias = "memory2", alias = "_memory2"))]
 ///     optional_memory: LazyInit<Memory>,
 /// }
-///
 /// ```
 ///
 /// When deriving `WasmerEnv`, you must wrap your types to be initialized in
@@ -82,7 +81,6 @@ impl From<ExportError> for HostEnvInitError {
 /// When implementing the trait manually, it's important to get a "weak" export to
 /// prevent a cyclic reference leaking memory. You can access a "weak" export with
 /// a method like `get_with_generics_weak`.
-
 pub trait WasmerEnv {
     // TODO: Had to not use Clone here
     // pub trait WasmerEnv: Clone + Send + Sync {

lib/js-api/src/export.rs

@@ -7,8 +7,7 @@ use js_sys::WebAssembly::{Memory, Table};
 use std::cell::RefCell;
 use std::fmt;
 use std::sync::Arc;
-use wasm_bindgen::JsCast;
-use wasm_bindgen::JsValue;
+use wasm_bindgen::{JsCast, JsValue};
 use wasmer_types::{ExternType, FunctionType, GlobalType, MemoryType, TableType};
 
 #[derive(Clone, Debug, PartialEq)]

lib/js-api/src/store.rs

@@ -11,12 +11,12 @@ use std::fmt;
 ///
 /// Spec: <https://webassembly.github.io/spec/core/exec/runtime.html#store>
 #[derive(Clone)]
-pub struct Store {}
+pub struct Store;
 
 impl Store {
     /// Creates a new `Store`.
     pub fn new() -> Self {
-        Self {}
+        Self
     }
 
     /// Checks whether two stores are identical. A store is considered