Report errors in external files (#6308)

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

1 files changed, 11 insertions, 0 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];