fix(cli/fmt): show filepath for InvalidData error (#17361)

1 files changed, 5 insertions, 1 deletions

diff --git a/cli/tools/fmt.rs b/cli/tools/fmt.rs
index f16e30731..d987d02d6 100644
--- a/cli/tools/fmt.rs
+++ b/cli/tools/fmt.rs
@@ -20,6 +20,7 @@ use crate::util::fs::FileCollector;
 use crate::util::path::get_extension;
 use crate::util::text_encoding;
 use deno_ast::ParsedSource;
+use deno_core::anyhow::anyhow;
 use deno_core::anyhow::bail;
 use deno_core::anyhow::Context;
 use deno_core::error::generic_error;
@@ -574,7 +575,10 @@ fn read_file_contents(file_path: &Path) -> Result<FileContents, AnyError> {
   let file_bytes = fs::read(file_path)
     .with_context(|| format!("Error reading {}", file_path.display()))?;
   let charset = text_encoding::detect_charset(&file_bytes);
-  let file_text = text_encoding::convert_to_utf8(&file_bytes, charset)?;
+  let file_text = text_encoding::convert_to_utf8(&file_bytes, charset)
+    .map_err(|_| {
+      anyhow!("{} is not a valid UTF-8 file", file_path.display())
+    })?;
   let had_bom = file_text.starts_with(text_encoding::BOM_CHAR);
   let text = if had_bom {
     text_encoding::strip_bom(&file_text).to_string()