Provide compiled JSON to TypeScript compiler. (#4404)

Fixes #4101

Previously, we would just provide the raw JSON to the TypeScript
compiler worker, but TypeScript does not transform JSON.  This caused
a problem when emitting a bundle, that the JSON would just be "inlined"
into the output, instead of being transformed into a module.

This fixes this problem by providing the compiled JSON to the TypeScript
compiler, so TypeScript just sees JSON as a "normal" TypeScript module.

1 files changed, 10 insertions, 2 deletions

diff --git a/cli/ops/compiler.rs b/cli/ops/compiler.rs
index e6ed364da..baa7b4c1c 100644
--- a/cli/ops/compiler.rs
+++ b/cli/ops/compiler.rs
@@ -136,9 +136,9 @@ fn op_fetch_source_files(
           }
           _ => f,
         };
-        // Special handling of Wasm files:
+        // Special handling of WASM and JSON files:
         // compile them into JS first!
-        // This allows TS to do correct export types.
+        // This allows TS to do correct export types as well as bundles.
         let source_code = match file.media_type {
           msg::MediaType::Wasm => {
             global_state
@@ -148,6 +148,14 @@ fn op_fetch_source_files(
               .map_err(|e| OpError::other(e.to_string()))?
               .code
           }
+          msg::MediaType::Json => {
+            global_state
+              .json_compiler
+              .compile(&file)
+              .await
+              .map_err(|e| OpError::other(e.to_string()))?
+              .code
+          }
           _ => String::from_utf8(file.source_code).unwrap(),
         };
         Ok::<_, OpError>(json!({