BREAKING: remove "emit" and "map" from deno info output (#25468)

The map field has been empty for years now and we don't want the emit
file to be exposed so it allows us to iterate on making the cache
faster. Additionally, it's racy/unreliable to rely on this information.
Instead, people should emit the TS files themselves using tools like
deno_emit, typescript, esbuild, etc.

Closes https://github.com/denoland/deno/issues/17703

Cargo.lock

@@ -1582,9 +1582,9 @@ dependencies = [
 
 [[package]]
 name = "deno_graph"
-version = "0.82.0"
+version = "0.82.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "646757b109993751f618d20de9bafc17f8f886fa910fb82c2c89b9e1df220ac6"
+checksum = "78b63015c73aa203da206b5d35b4c1eaa23bc7fed37ab325da62d525a5524a04"
 dependencies = [
  "anyhow",
  "async-trait",

cli/Cargo.toml

@@ -68,7 +68,7 @@ deno_cache_dir = { workspace = true }
 deno_config = { version = "=0.33.2", features = ["workspace", "sync"] }
 deno_core = { workspace = true, features = ["include_js_files_for_snapshotting"] }
 deno_doc = { version = "0.148.0", features = ["html", "syntect"] }
-deno_graph = { version = "=0.82.0" }
+deno_graph = { version = "=0.82.1" }
 deno_lint = { version = "=0.64.0", features = ["docs"] }
 deno_lockfile.workspace = true
 deno_npm = "=0.25.0"

cli/cache/emit.rs

@@ -82,19 +82,6 @@ impl EmitCache {
     Ok(())
   }
 
-  /// Gets the filepath which stores the emit.
-  pub fn get_emit_filepath(
-    &self,
-    specifier: &ModuleSpecifier,
-  ) -> Option<PathBuf> {
-    Some(
-      self
-        .disk_cache
-        .location
-        .join(self.get_emit_filename(specifier)?),
-    )
-  }
-
   fn get_emit_filename(&self, specifier: &ModuleSpecifier) -> Option<PathBuf> {
     self
       .disk_cache

cli/cache/mod.rs

@@ -8,6 +8,7 @@ use crate::file_fetcher::FileFetcher;
 use crate::file_fetcher::FileOrRedirect;
 use crate::npm::CliNpmResolver;
 use crate::util::fs::atomic_write_file_with_retries;
+use crate::util::path::specifier_has_extension;
 
 use deno_ast::MediaType;
 use deno_core::futures;
@@ -106,7 +107,6 @@ pub use deno_cache_dir::HttpCache;
 /// A "wrapper" for the FileFetcher and DiskCache for the Deno CLI that provides
 /// a concise interface to the DENO_DIR when building module graphs.
 pub struct FetchCacher {
-  emit_cache: Arc<EmitCache>,
   file_fetcher: Arc<FileFetcher>,
   file_header_overrides: HashMap<ModuleSpecifier, HashMap<String, String>>,
   global_http_cache: Arc<GlobalHttpCache>,
@@ -118,7 +118,6 @@ pub struct FetchCacher {
 
 impl FetchCacher {
   pub fn new(
-    emit_cache: Arc<EmitCache>,
     file_fetcher: Arc<FileFetcher>,
     file_header_overrides: HashMap<ModuleSpecifier, HashMap<String, String>>,
     global_http_cache: Arc<GlobalHttpCache>,
@@ -127,7 +126,6 @@ impl FetchCacher {
     permissions: PermissionsContainer,
   ) -> Self {
     Self {
-      emit_cache,
       file_fetcher,
       file_header_overrides,
       global_http_cache,
@@ -144,15 +142,7 @@ impl FetchCacher {
     self.cache_info_enabled = true;
   }
 
-  // DEPRECATED: Where the file is stored and how it's stored should be an implementation
-  // detail of the cache.
-  //
-  // todo(dsheret): remove once implementing
-  //  * https://github.com/denoland/deno/issues/17707
-  //  * https://github.com/denoland/deno/issues/17703
-  #[deprecated(
-    note = "There should not be a way to do this because the file may not be cached at a local path in the future."
-  )]
+  /// Only use this for `deno info`.
   fn get_local_path(&self, specifier: &ModuleSpecifier) -> Option<PathBuf> {
     // TODO(@kitsonk) fix when deno_graph does not query cache for synthetic
     // modules
@@ -179,15 +169,7 @@ impl Loader for FetchCacher {
     #[allow(deprecated)]
     let local = self.get_local_path(specifier)?;
     if local.is_file() {
-      let emit = self
-        .emit_cache
-        .get_emit_filepath(specifier)
-        .filter(|p| p.is_file());
-      Some(CacheInfo {
-        local: Some(local),
-        emit,
-        map: None,
-      })
+      Some(CacheInfo { local: Some(local) })
     } else {
       None
     }
@@ -200,9 +182,8 @@ impl Loader for FetchCacher {
   ) -> LoadFuture {
     use deno_graph::source::CacheSetting as LoaderCacheSetting;
 
-    if specifier.scheme() == "file"
-      && specifier.path().contains("/node_modules/")
-    {
+    if specifier.scheme() == "file" {
+      if specifier.path().contains("/node_modules/") {
         // The specifier might be in a completely different symlinked tree than
         // what the node_modules url is in (ex. `/my-project-1/node_modules`
         // symlinked to `/my-project-2/node_modules`), so first we checked if the path
@@ -217,6 +198,16 @@ impl Loader for FetchCacher {
         }
       }
 
+      // make local CJS modules external to the graph
+      if specifier_has_extension(specifier, "cjs") {
+        return Box::pin(futures::future::ready(Ok(Some(
+          LoadResponse::External {
+            specifier: specifier.clone(),
+          },
+        ))));
+      }
+    }
+
     let file_fetcher = self.file_fetcher.clone();
     let file_header_overrides = self.file_header_overrides.clone();
     let permissions = self.permissions.clone();
@@ -293,6 +284,7 @@ impl Loader for FetchCacher {
   fn cache_module_info(
     &self,
     specifier: &ModuleSpecifier,
+    media_type: MediaType,
     source: &Arc<[u8]>,
     module_info: &deno_graph::ModuleInfo,
   ) {
@@ -300,7 +292,7 @@ impl Loader for FetchCacher {
     let source_hash = CacheDBHash::from_source(source);
     let result = self.module_info_cache.set_module_info(
       specifier,
-      MediaType::from_specifier(specifier),
+      media_type,
       source_hash,
       module_info,
     );

cli/factory.rs

@@ -616,7 +616,6 @@ impl CliFactory {
           self.parsed_source_cache().clone(),
           cli_options.maybe_lockfile().cloned(),
           self.maybe_file_watcher_reporter().clone(),
-          self.emit_cache()?.clone(),
           self.file_fetcher()?.clone(),
           self.global_http_cache()?.clone(),
         )))

cli/graph_util.rs

@@ -368,7 +368,6 @@ pub struct ModuleGraphBuilder {
   parsed_source_cache: Arc<ParsedSourceCache>,
   lockfile: Option<Arc<CliLockfile>>,
   maybe_file_watcher_reporter: Option<FileWatcherReporter>,
-  emit_cache: Arc<cache::EmitCache>,
   file_fetcher: Arc<FileFetcher>,
   global_http_cache: Arc<GlobalHttpCache>,
 }
@@ -385,7 +384,6 @@ impl ModuleGraphBuilder {
     parsed_source_cache: Arc<ParsedSourceCache>,
     lockfile: Option<Arc<CliLockfile>>,
     maybe_file_watcher_reporter: Option<FileWatcherReporter>,
-    emit_cache: Arc<cache::EmitCache>,
     file_fetcher: Arc<FileFetcher>,
     global_http_cache: Arc<GlobalHttpCache>,
   ) -> Self {
@@ -399,7 +397,6 @@ impl ModuleGraphBuilder {
       parsed_source_cache,
       lockfile,
       maybe_file_watcher_reporter,
-      emit_cache,
       file_fetcher,
       global_http_cache,
     }
@@ -681,7 +678,6 @@ impl ModuleGraphBuilder {
     permissions: PermissionsContainer,
   ) -> cache::FetchCacher {
     cache::FetchCacher::new(
-      self.emit_cache.clone(),
       self.file_fetcher.clone(),
       self.options.resolve_file_header_overrides(),
       self.global_http_cache.clone(),

cli/lsp/documents.rs

@@ -1524,12 +1524,16 @@ impl<'a> deno_graph::source::Loader for OpenDocumentsGraphLoader<'a> {
   fn cache_module_info(
     &self,
     specifier: &deno_ast::ModuleSpecifier,
+    media_type: MediaType,
     source: &Arc<[u8]>,
     module_info: &deno_graph::ModuleInfo,
   ) {
-    self
-      .inner_loader
-      .cache_module_info(specifier, source, module_info)
+    self.inner_loader.cache_module_info(
+      specifier,
+      media_type,
+      source,
+      module_info,
+    )
   }
 }
 

cli/schemas/module-graph.json

@@ -83,14 +83,6 @@
           "type": "string",
           "description": "The checksum of the local source file. This can be used to validate if the current on disk version matches the version described here."
         },
-        "emit": {
-          "type": "string",
-          "description": "The path to an emitted version of the module, if the module requires transpilation to be loaded into the Deno runtime."
-        },
-        "map": {
-          "type": "string",
-          "description": "The path to an optionally emitted source map between the original and emitted version of the file."
-        },
         "error": {
           "type": "string",
           "description": "If when resolving the module, Deno encountered an error and the module is unavailable, the text of that error will be indicated here."

cli/tools/info.rs

@@ -461,22 +461,6 @@ impl<'a> GraphDisplayContext<'a> {
               local.to_string_lossy()
             )?;
           }
-          if let Some(emit) = &cache_info.emit {
-            writeln!(
-              writer,
-              "{} {}",
-              colors::bold("emit:"),
-              emit.to_string_lossy()
-            )?;
-          }
-          if let Some(map) = &cache_info.map {
-            writeln!(
-              writer,
-              "{} {}",
-              colors::bold("map:"),
-              map.to_string_lossy()
-            )?;
-          }
         }
         if let Some(module) = root.js() {
           writeln!(writer, "{} {}", colors::bold("type:"), module.media_type)?;

cli/util/path.rs

@@ -42,6 +42,21 @@ pub fn get_extension(file_path: &Path) -> Option<String> {
     .map(|e| e.to_lowercase());
 }
 
+pub fn specifier_has_extension(
+  specifier: &ModuleSpecifier,
+  searching_ext: &str,
+) -> bool {
+  let Some((_, ext)) = specifier.path().rsplit_once('.') else {
+    return false;
+  };
+  let searching_ext = searching_ext.strip_prefix('.').unwrap_or(searching_ext);
+  debug_assert!(!searching_ext.contains('.')); // exts like .d.ts are not implemented here
+  if ext.len() != searching_ext.len() {
+    return false;
+  }
+  ext.eq_ignore_ascii_case(searching_ext)
+}
+
 pub fn get_atomic_dir_path(file_path: &Path) -> PathBuf {
   let rand = gen_rand_path_component();
   let new_file_name = format!(
@@ -377,6 +392,18 @@ mod test {
     }
   }
 
+  #[test]
+  fn test_specifier_has_extension() {
+    fn get(specifier: &str, ext: &str) -> bool {
+      specifier_has_extension(&ModuleSpecifier::parse(specifier).unwrap(), ext)
+    }
+
+    assert!(get("file:///a/b/c.ts", "ts"));
+    assert!(get("file:///a/b/c.ts", ".ts"));
+    assert!(!get("file:///a/b/c.ts", ".cts"));
+    assert!(get("file:///a/b/c.CtS", ".cts"));
+  }
+
   #[test]
   fn test_to_percent_decoded_str() {
     let str = to_percent_decoded_str("%F0%9F%A6%95");

tests/integration/info_tests.rs

@@ -5,31 +5,6 @@ use test_util::itest;
 // use util::env_vars_for_npm_tests;
 use util::TestContextBuilder;
 
-#[test]
-fn info_with_compiled_source() {
-  let context = TestContextBuilder::new().use_http_server().build();
-  let module_path = "http://127.0.0.1:4545/run/048_media_types_jsx.ts";
-
-  let output = context
-    .new_command()
-    .current_dir(util::testdata_path())
-    .args_vec(["cache", module_path])
-    .run();
-  output.assert_exit_code(0);
-  output.skip_output_check();
-
-  let output = context
-    .new_command()
-    .current_dir(util::testdata_path())
-    .args_vec(["info", module_path])
-    .split_output()
-    .run();
-
-  // check the output of the test.ts program.
-  assert!(output.stdout().trim().contains("emit: "));
-  assert_eq!(output.stderr(), "");
-}
-
 #[test]
 fn info_lock_write() {
   let context = TestContextBuilder::new().use_http_server().build();

tests/specs/info/multiple_redirects/main.out

@@ -27,8 +27,6 @@ Download http://localhost:4545/subdir/redirects/redirect1.js
         }
       ],
       "local": "[WILDLINE]main.ts",
-      "emit": null,
-      "map": null,
       "size": 97,
       "mediaType": "TypeScript",
       "specifier": "file:///[WILDLINE]/multiple_redirects/main.ts"
@@ -36,8 +34,6 @@ Download http://localhost:4545/subdir/redirects/redirect1.js
     {
       "kind": "esm",
       "local": "[WILDLINE]",
-      "emit": null,
-      "map": null,
       "size": 27,
       "mediaType": "JavaScript",
       "specifier": "http://localhost:4545/subdir/redirects/redirect1.js"

tests/testdata/npm/cjs_with_deps/main_info_json.out

@@ -42,8 +42,6 @@
         }
       ],
       "local": "[WILDCARD]main.js",
-      "emit": null,
-      "map": null,
       "size": 325,
       "mediaType": "JavaScript",
       "specifier": "[WILDCARD]/main.js"

tests/testdata/npm/peer_deps_with_copied_folders/main_info_json.out

@@ -42,8 +42,6 @@
         }
       ],
       "local": "[WILDCARD]main.ts",
-      "emit": null,
-      "map": null,
       "size": 171,
       "mediaType": "TypeScript",
       "specifier": "file://[WILDCARD]/main.ts"