Refactor libdeno ES module interface. (#1624)

Allows for future asynchronous module loading.

Add support for import.meta.url

Fixes #1496

1 files changed, 18 insertions, 0 deletions

diff --git a/src/errors.rs b/src/errors.rs
index 0855e0079..74502acc5 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -1,5 +1,6 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 
+use crate::js_errors::JSError;
 pub use crate::msg::ErrorKind;
 use crate::resolve_addr::ResolveAddrError;
 
@@ -178,3 +179,20 @@ pub fn permission_denied() -> DenoError {
     String::from("permission denied"),
   )
 }
+
+pub enum RustOrJsError {
+  Rust(DenoError),
+  Js(JSError),
+}
+
+impl From<DenoError> for RustOrJsError {
+  fn from(e: DenoError) -> Self {
+    RustOrJsError::Rust(e)
+  }
+}
+
+impl From<JSError> for RustOrJsError {
+  fn from(e: JSError) -> Self {
+    RustOrJsError::Js(e)
+  }
+}