fix(node): resolve types via package.json for directory import (#22878)

Does a package resolve when resolving types for a directory (copying the
behaviour that typescript does).

ext/node/polyfills/01_require.js

@@ -491,31 +491,6 @@ Module.globalPaths = modulePaths;
 
 const CHAR_FORWARD_SLASH = 47;
 const TRAILING_SLASH_REGEX = /(?:^|\/)\.?\.$/;
-const encodedSepRegEx = /%2F|%2C/i;
-
-function finalizeEsmResolution(
-  resolved,
-  parentPath,
-  pkgPath,
-) {
-  if (RegExpPrototypeTest(encodedSepRegEx, resolved)) {
-    throw new ERR_INVALID_MODULE_SPECIFIER(
-      resolved,
-      'must not include encoded "/" or "\\" characters',
-      parentPath,
-    );
-  }
-  // const filename = fileURLToPath(resolved);
-  const filename = resolved;
-  const actual = tryFile(filename, false);
-  if (actual) {
-    return actual;
-  }
-  throw new ERR_MODULE_NOT_FOUND(
-    filename,
-    path.resolve(pkgPath, "package.json"),
-  );
-}
 
 // This only applies to requests of a specific form:
 // 1. name/.*

ext/node/resolution.rs

@@ -203,8 +203,14 @@ impl NodeResolver {
         let path = url.to_file_path().unwrap();
         // todo(16370): the module kind is not correct here. I think we need
         // typescript to tell us if the referrer is esm or cjs
-        match self.path_to_declaration_path(path, NodeModuleKind::Esm) {
+        let maybe_decl_url = self.path_to_declaration_url(
-          Some(path) => to_file_specifier(&path),
+          path,
+          referrer,
+          NodeModuleKind::Esm,
+          permissions,
+        )?;
+        match maybe_decl_url {
+          Some(url) => url,
           None => return Ok(None),
         }
       }
@@ -231,10 +237,12 @@ impl NodeResolver {
         let file_path = to_file_path(&resolved_specifier);
         // todo(dsherret): the node module kind is not correct and we
         // should use the value provided by typescript instead
-        let declaration_path =
+        self.path_to_declaration_url(
-          self.path_to_declaration_path(file_path, NodeModuleKind::Esm);
+          file_path,
-        declaration_path
+          referrer,
-          .map(|declaration_path| to_file_specifier(&declaration_path))
+          NodeModuleKind::Esm,
+          permissions,
+        )?
       } else {
         Some(resolved_specifier)
       }
@@ -363,8 +371,13 @@ impl NodeResolver {
       NodeResolutionMode::Types => {
         if resolved_url.scheme() == "file" {
           let path = resolved_url.to_file_path().unwrap();
-          match self.path_to_declaration_path(path, node_module_kind) {
+          match self.path_to_declaration_url(
-            Some(path) => to_file_specifier(&path),
+            path,
+            referrer,
+            node_module_kind,
+            permissions,
+          )? {
+            Some(url) => url,
             None => return Ok(None),
           }
         } else {
@@ -448,11 +461,13 @@ impl NodeResolver {
   }
 
   /// Checks if the resolved file has a corresponding declaration file.
-  fn path_to_declaration_path(
+  fn path_to_declaration_url(
     &self,
     path: PathBuf,
+    referrer: &ModuleSpecifier,
     referrer_kind: NodeModuleKind,
-  ) -> Option<PathBuf> {
+    permissions: &dyn NodePermissions,
+  ) -> Result<Option<ModuleSpecifier>, AnyError> {
     fn probe_extensions(
       fs: &dyn deno_fs::FileSystem,
       path: &Path,
@@ -502,14 +517,34 @@ impl NodeResolver {
       || lowercase_path.ends_with(".d.cts")
       || lowercase_path.ends_with(".d.mts")
     {
-      return Some(path);
+      return Ok(Some(to_file_specifier(&path)));
     }
     if let Some(path) =
       probe_extensions(&*self.fs, &path, &lowercase_path, referrer_kind)
     {
-      return Some(path);
+      return Ok(Some(to_file_specifier(&path)));
     }
     if self.fs.is_dir_sync(&path) {
+      let package_json_path = path.join("package.json");
+      if let Ok(pkg_json) =
+        self.load_package_json(permissions, package_json_path)
+      {
+        let maybe_resolution = self.resolve_package_subpath(
+          &pkg_json,
+          /* sub path */ ".",
+          referrer,
+          referrer_kind,
+          match referrer_kind {
+            NodeModuleKind::Esm => DEFAULT_CONDITIONS,
+            NodeModuleKind::Cjs => REQUIRE_CONDITIONS,
+          },
+          NodeResolutionMode::Types,
+          permissions,
+        )?;
+        if let Some(resolution) = maybe_resolution {
+          return Ok(Some(resolution));
+        }
+      }
       let index_path = path.join("index.js");
       if let Some(path) = probe_extensions(
         &*self.fs,
@@ -517,14 +552,14 @@ impl NodeResolver {
         &index_path.to_string_lossy().to_lowercase(),
         referrer_kind,
       ) {
-        return Some(path);
+        return Ok(Some(to_file_specifier(&path)));
       }
     }
     // allow resolving .css files for types resolution
     if lowercase_path.ends_with(".css") {
-      return Some(path);
+      return Ok(Some(to_file_specifier(&path)));
     }
-    None
+    Ok(None)
   }
 
   #[allow(clippy::too_many_arguments)]
@@ -771,8 +806,7 @@ impl NodeResolver {
     permissions: &dyn NodePermissions,
   ) -> Result<Option<ModuleSpecifier>, AnyError> {
     if let Some(target) = target.as_str() {
-      return self
+      let url = self.resolve_package_target_string(
-        .resolve_package_target_string(
         target,
         subpath,
         package_subpath,
@@ -784,17 +818,18 @@ impl NodeResolver {
         conditions,
         mode,
         permissions,
-        )
+      )?;
-        .map(|url| {
       if mode.is_types() && url.scheme() == "file" {
         let path = url.to_file_path().unwrap();
-            self
+        return self.path_to_declaration_url(
-              .path_to_declaration_path(path, referrer_kind)
+          path,
-              .map(|path| to_file_specifier(&path))
+          referrer,
+          referrer_kind,
+          permissions,
+        );
       } else {
-            Some(url)
+        return Ok(Some(url));
       }
-        });
     } else if let Some(target_arr) = target.as_array() {
       if target_arr.is_empty() {
         return Ok(None);
@@ -1090,29 +1125,36 @@ impl NodeResolver {
         Ok(found) => return Ok(Some(found)),
         Err(exports_err) => {
           if mode.is_types() && package_subpath == "." {
-            if let Ok(Some(path)) =
+            return self.legacy_main_resolve(
-              self.legacy_main_resolve(package_json, referrer_kind, mode)
+              package_json,
-            {
+              referrer,
-              return Ok(Some(to_file_specifier(&path)));
+              referrer_kind,
-            } else {
+              mode,
-              return Ok(None);
+              permissions,
-            }
+            );
           }
           return Err(exports_err);
         }
       }
     }
     if package_subpath == "." {
-      return self
+      return self.legacy_main_resolve(
-        .legacy_main_resolve(package_json, referrer_kind, mode)
+        package_json,
-        .map(|maybe_resolved| maybe_resolved.map(|p| to_file_specifier(&p)));
+        referrer,
+        referrer_kind,
+        mode,
+        permissions,
+      );
     }
 
     let file_path = package_json.path.parent().unwrap().join(package_subpath);
     if mode.is_types() {
-      let maybe_declaration_path =
+      self.path_to_declaration_url(
-        self.path_to_declaration_path(file_path, referrer_kind);
+        file_path,
-      Ok(maybe_declaration_path.map(|p| to_file_specifier(&p)))
+        referrer,
+        referrer_kind,
+        permissions,
+      )
     } else {
       Ok(Some(to_file_specifier(&file_path)))
     }
@@ -1183,9 +1225,11 @@ impl NodeResolver {
   pub(super) fn legacy_main_resolve(
     &self,
     package_json: &PackageJson,
+    referrer: &ModuleSpecifier,
     referrer_kind: NodeModuleKind,
     mode: NodeResolutionMode,
-  ) -> Result<Option<PathBuf>, AnyError> {
+    permissions: &dyn NodePermissions,
+  ) -> Result<Option<ModuleSpecifier>, AnyError> {
     let maybe_main = if mode.is_types() {
       match package_json.types.as_ref() {
         Some(types) => Some(types),
@@ -1194,9 +1238,13 @@ impl NodeResolver {
           // a corresponding declaration file
           if let Some(main) = package_json.main(referrer_kind) {
             let main = package_json.path.parent().unwrap().join(main).clean();
-            if let Some(path) =
+            let maybe_decl_url = self.path_to_declaration_url(
-              self.path_to_declaration_path(main, referrer_kind)
+              main,
-            {
+              referrer,
+              referrer_kind,
+              permissions,
+            )?;
+            if let Some(path) = maybe_decl_url {
               return Ok(Some(path));
             }
           }
@@ -1210,7 +1258,7 @@ impl NodeResolver {
     if let Some(main) = maybe_main {
       let guess = package_json.path.parent().unwrap().join(main).clean();
       if self.fs.is_file_sync(&guess) {
-        return Ok(Some(guess));
+        return Ok(Some(to_file_specifier(&guess)));
       }
 
       // todo(dsherret): investigate exactly how node and typescript handles this
@@ -1240,7 +1288,7 @@ impl NodeResolver {
           .clean();
         if self.fs.is_file_sync(&guess) {
           // TODO(bartlomieju): emitLegacyIndexDeprecation()
-          return Ok(Some(guess));
+          return Ok(Some(to_file_specifier(&guess)));
         }
       }
     }
@@ -1263,7 +1311,7 @@ impl NodeResolver {
         .clean();
       if self.fs.is_file_sync(&guess) {
         // TODO(bartlomieju): emitLegacyIndexDeprecation()
-        return Ok(Some(guess));
+        return Ok(Some(to_file_specifier(&guess)));
       }
     }
 

tests/specs/npm/check_pkg_json_import/__test__.json

@@ -0,0 +1,5 @@
+{
+  "base": "npm",
+  "args": "check --all main.ts",
+  "output": "main.out"
+}

tests/specs/npm/check_pkg_json_import/main.out

@@ -0,0 +1,3 @@
+Download http://localhost:4545/npm/registry/@denotest/types-pkg-json-import
+Download http://localhost:4545/npm/registry/@denotest/types-pkg-json-import/1.0.0.tgz
+Check file:///[WILDLINE]/main.ts

tests/specs/npm/check_pkg_json_import/main.ts

@@ -0,0 +1,18 @@
+import { createContext } from "npm:@denotest/types-pkg-json-import";
+import { useContext } from "npm:@denotest/types-pkg-json-import/hooks";
+
+export interface Foo {
+  foo: string;
+}
+
+export const CTX = createContext<Foo | undefined>(undefined);
+
+function unwrap(foo: Foo) {}
+
+export function useCSP() {
+  const foo = useContext(CTX);
+  // previously this was erroring
+  if (foo) {
+    unwrap(foo);
+  }
+}

tests/testdata/npm/registry/@denotest/types-pkg-json-import/1.0.0/hooks/src/index.d.ts

@@ -0,0 +1,4 @@
+// this directory import was not working (it should resolve via the package.json)
+import { PreactContext } from '../..';
+
+export declare function useContext<T>(context: PreactContext<T>): T;

tests/testdata/npm/registry/@denotest/types-pkg-json-import/1.0.0/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "@denotest/types-directory-import",
+  "version": "1.0.0",
+  "exports": {
+    ".": {
+      "types": "./src/index.d.ts",
+      "import": "./dist/preact.mjs"
+    },
+    "./hooks": {
+      "types": "./hooks/src/index.d.ts",
+      "import": "./hooks/dist/hooks.mjs"
+    }
+  }
+}

tests/testdata/npm/registry/@denotest/types-pkg-json-import/1.0.0/src/index.d.ts

@@ -0,0 +1,76 @@
+export as namespace preact;
+
+export interface VNode<P = {}> {
+	type: any | string;
+	props: P & { children: ComponentChildren };
+	key: Key;
+	/**
+	 * ref is not guaranteed by React.ReactElement, for compatibility reasons
+	 * with popular react libs we define it as optional too
+	 */
+	ref?: Ref<any> | null;
+	/**
+	 * The time this `vnode` started rendering. Will only be set when
+	 * the devtools are attached.
+	 * Default value: `0`
+	 */
+	startTime?: number;
+	/**
+	 * The time that the rendering of this `vnode` was completed. Will only be
+	 * set when the devtools are attached.
+	 * Default value: `-1`
+	 */
+	endTime?: number;
+}
+
+export type Key = string | number | any;
+
+export type RefObject<T> = { current: T | null };
+export type RefCallback<T> = (instance: T | null) => void;
+export type Ref<T> = RefObject<T> | RefCallback<T> | null;
+
+export type ComponentChild =
+	| VNode<any>
+	| object
+	| string
+	| number
+	| bigint
+	| boolean
+	| null
+	| undefined;
+export type ComponentChildren = ComponentChild[] | ComponentChild;
+
+export interface FunctionComponent<P = {}> {
+	(props: any, context?: any): VNode<any> | null;
+	displayName?: string;
+	defaultProps?: Partial<P> | undefined;
+}
+export interface FunctionalComponent<P = {}> extends FunctionComponent<P> {}
+
+//
+// Context
+// -----------------------------------
+export interface Consumer<T>
+	extends FunctionComponent<{
+		children: (value: T) => ComponentChildren;
+	}> {}
+export interface PreactConsumer<T> extends Consumer<T> {}
+
+export interface Provider<T>
+	extends FunctionComponent<{
+		value: T;
+		children?: ComponentChildren;
+	}> {}
+export interface PreactProvider<T> extends Provider<T> {}
+export type ContextType<C extends Context<any>> = C extends Context<infer T>
+	? T
+	: never;
+
+export interface Context<T> {
+	Consumer: Consumer<T>;
+	Provider: Provider<T>;
+	displayName?: string;
+}
+export interface PreactContext<T> extends Context<T> {}
+
+export function createContext<T>(defaultValue: T): Context<T>;

tools/lint.js

@@ -50,6 +50,8 @@ async function dlint() {
     ":!:cli/bench/testdata/react-dom.js",
     ":!:cli/compilers/wasm_wrap.js",
     ":!:cli/tsc/dts/**",
+    ":!:target/**",
+    ":!:tests/specs/**",
     ":!:tests/testdata/encoding/**",
     ":!:tests/testdata/error_syntax.js",
     ":!:tests/testdata/file_extensions/ts_with_js_extension.js",