Merge pull request #11 from spielrs/development

Add build file

crate/yew_styles/build.rs

@@ -0,0 +1,9 @@
+pub fn main() {
+    let using_web_sys = cfg!(feature = "web_sys");
+    let using_std_web = cfg!(feature = "std_web");
+    if using_web_sys && using_std_web {
+        panic!("Yew does not allow the `web_sys` and `std_web` cargo features to be used simultaneously");
+    } else if !using_web_sys && !using_std_web {
+        panic!("Yew requires selecting either the `web_sys` or `std_web` cargo feature");
+    }
+}

crate/yew_styles/src/assets.rs

@@ -1,3 +1,4 @@
+#[cfg(any(feature = "std_web", feature = "web_sys"))]
 use yew::prelude::*;
 
 #[derive(Clone)]

crate/yew_styles/src/components/mod.rs

@@ -1,8 +1,4 @@
 extern crate uuid;
-#[cfg(feature = "std_web")]
-extern crate yew;
-#[cfg(feature = "web_sys")]
-extern crate yew;
 pub mod button;
 pub mod container;
 pub mod item;