Add { Load, Resolve }

ecmascript/utils/Cargo.toml

@@ -15,6 +15,7 @@ swc_ecma_ast = { version = "0.17.0", path ="../ast" }
 swc_atoms = { version = "0.2.0", path ="../../atoms" }
 swc_common = { version = "0.5.0", path ="../../common" }
 swc_ecma_parser = { version = "0.19", path ="../parser", features = ["verify"] }
+anyhow = "1.0.26"
 once_cell = "1"
 scoped-tls = "1"
 unicode-xid = "0.2"

ecmascript/utils/src/lib.rs

@@ -36,7 +36,9 @@ mod macros;
 pub mod constructor;
 mod factory;
 pub mod ident;
+pub mod load;
 pub mod options;
+pub mod resolve;
 mod value;
 pub mod var;
 

ecmascript/utils/src/load.rs

@@ -0,0 +1,20 @@
+use anyhow::Error;
+use std::{path::Path, sync::Arc};
+use swc_common::SourceFile;
+use swc_ecma_ast::Module;
+
+pub trait Load {
+    fn load(&self, path: &Path) -> Result<(Arc<SourceFile>, Module), Error>;
+}
+
+impl<T: ?Sized + Load> Load for Box<T> {
+    fn load(&self, path: &Path) -> Result<(Arc<SourceFile>, Module), Error> {
+        T::load(self, path)
+    }
+}
+
+impl<'a, T: ?Sized + Load> Load for &'a T {
+    fn load(&self, path: &Path) -> Result<(Arc<SourceFile>, Module), Error> {
+        T::load(self, path)
+    }
+}

ecmascript/utils/src/resolve.rs

@@ -0,0 +1,20 @@
+use anyhow::Error;
+use std::path::{Path, PathBuf};
+
+pub trait Resolve {
+    /// Returned filename will be hashed if possible and used to generate module
+    /// id.
+    fn resolve(&self, base: &Path, import: &str) -> Result<PathBuf, Error>;
+}
+
+impl<T: ?Sized + Resolve> Resolve for Box<T> {
+    fn resolve(&self, base: &Path, import: &str) -> Result<PathBuf, Error> {
+        T::resolve(self, base, import)
+    }
+}
+
+impl<'a, T: ?Sized + Resolve> Resolve for &'a T {
+    fn resolve(&self, base: &Path, import: &str) -> Result<PathBuf, Error> {
+        T::resolve(self, base, import)
+    }
+}