Report errors in external files (#6308)

Co-authored-by: Laurenz <laurmaedje@gmail.com>

2 files changed, 13 insertions, 2 deletions

diff --git a/crates/typst-library/src/foundations/bytes.rs b/crates/typst-library/src/foundations/bytes.rs
index d633c99a..180dcdad 100644
--- a/crates/typst-library/src/foundations/bytes.rs
+++ b/crates/typst-library/src/foundations/bytes.rs
@@ -7,6 +7,7 @@ use std::sync::Arc;
 
 use ecow::{eco_format, EcoString};
 use serde::{Serialize, Serializer};
+use typst_syntax::Lines;
 use typst_utils::LazyHash;
 
 use crate::diag::{bail, StrResult};
@@ -286,6 +287,16 @@ impl Serialize for Bytes {
     }
 }
 
+impl TryFrom<&Bytes> for Lines<String> {
+    type Error = Utf8Error;
+
+    #[comemo::memoize]
+    fn try_from(value: &Bytes) -> Result<Lines<String>, Utf8Error> {
+        let text = value.as_str()?;
+        Ok(Lines::new(text.to_string()))
+    }
+}
+
 /// Any type that can back a byte buffer.
 trait Bytelike: Send + Sync {
     fn as_bytes(&self) -> &[u8];
diff --git a/crates/typst-library/src/foundations/plugin.rs b/crates/typst-library/src/foundations/plugin.rs
index 31f8cd73..a04443bf 100644
--- a/crates/typst-library/src/foundations/plugin.rs
+++ b/crates/typst-library/src/foundations/plugin.rs
@@ -151,8 +151,8 @@ pub fn plugin(
     /// A [path]($syntax/#paths) to a WebAssembly file or raw WebAssembly bytes.
     source: Spanned<DataSource>,
 ) -> SourceResult<Module> {
-    let data = source.load(engine.world)?;
-    Plugin::module(data).at(source.span)
+    let loaded = source.load(engine.world)?;
+    Plugin::module(loaded.data).at(source.span)
 }
 
 #[scope]