fix: sub-path module resolve wrong with pkg browser field

.gitignore

@@ -18,3 +18,5 @@
 bin
 esbuild.exe
 node_modules/
+.idea/
+.vscode/

internal/bundler/bundler_default_test.go

@@ -1389,6 +1389,48 @@ NOTE: The package "fs" wasn't found on the file system but is built into node. A
 	})
 }
 
+func TestSubImportModuleWithPkgBrowser(t *testing.T) {
+	default_suite.expectBundled(t, bundled{
+		files: map[string]string{
+			"/entry.js": `
+			import { v } from "pkg/sub";
+			console.log(v);
+		`,
+			"/node_modules/pkg/package.json": `{ "browser": { "./sub": "./sub/index.js" } }`,
+			"/node_modules/pkg/sub/index.js": `
+				export { version as v } from "sub";
+			`,
+			"/node_modules/sub/index.js": `export const version = 123`,
+		},
+		entryPaths: []string{"/entry.js"},
+		options: config.Options{
+			Mode:          config.ModeBundle,
+			AbsOutputFile: "/out.js",
+		},
+	})
+}
+
+func TestSubImportModulePkgBrowser(t *testing.T) {
+	default_suite.expectBundled(t, bundled{
+		files: map[string]string{
+			"/entry.js": `
+			import { v } from "pkg/sub";
+			console.log(v);
+		`,
+			"/node_modules/pkg/package.json": `{ "browser": { "./sub": "./sub/index.js" } }`,
+			"/node_modules/pkg/sub/index.js": `
+				export { version as v } from "sub2";
+			`,
+			"/node_modules/sub2/index.js": `export const version = 123`,
+		},
+		entryPaths: []string{"/entry.js"},
+		options: config.Options{
+			Mode:          config.ModeBundle,
+			AbsOutputFile: "/out.js",
+		},
+	})
+}
+
 func TestImportFSNodeCommonJS(t *testing.T) {
 	default_suite.expectBundled(t, bundled{
 		files: map[string]string{

internal/bundler/snapshots/snapshots_default.txt

@@ -2558,6 +2558,24 @@ TestRequireFSNodeMinify
 ---------- /out.js ----------
 return require("fs");
 
+================================================================================
+TestSubImportModuleWithPkgBrowser
+---------- /out.js ----------
+// node_modules/sub/index.js
+var version = 123;
+
+// entry.js
+console.log(version);
+
+================================================================================
+TestSubImportModulePkgBrowser
+---------- /out.js ----------
+// node_modules/sub2/index.js
+var version = 123;
+
+// entry.js
+console.log(version);
+
 ================================================================================
 TestRequireJson
 ---------- /out.js ----------

internal/resolver/package_json.go

@@ -197,7 +197,7 @@ func (r resolverQuery) checkBrowserMap(resolveDirInfo *dirInfo, inputPath string
 				}
 			}
 			if isInSamePackage {
-				checkPath("./" + inputPath)
+				checkPath(inputPath)
 			}
 		}
 	}

scripts/end-to-end-tests.js

@@ -324,6 +324,17 @@
       'node_modules/pkg/package.json': `{ "browser": { "./pkg2": "./file" } }`,
       'node_modules/pkg/file.js': `var works = true`,
     }),
+    test(['entry.js', '--bundle', '--outfile=node.js'], {
+      'entry.js': `
+          import { v } from "pkg/sub"
+          console.log(v)
+        `,
+      'node_modules/pkg/package.json': `{ "browser": { "./sub": "./sub/index.js" } }`,
+      'node_modules/pkg/sub/index.js': `
+          export { version as v } from "sub";
+        `,
+      'node_modules/sub/index.js': `export const version = 123`,
+    }),
   )
 
   // Test arbitrary module namespace identifier names