From cf4693845d710dfe9d86b8a3374a95376f1d2265 Mon Sep 17 00:00:00 2001
From: Brian Terlson <brian.terlson@microsoft.com>
Date: Thu, 20 Jun 2019 18:10:19 -0700
Subject: [PATCH] WIP fix path fragment inputs

---
 src/index.js                        |  9 ++++++++-
 test/package.json                   | 15 +++++++++++++++
 test/samples/browser-local/delme.js |  3 +++
 test/samples/browser-local/main.js  |  4 ++++
 test/test.js                        | 14 ++++++++++++++
 5 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 test/package.json
 create mode 100644 test/samples/browser-local/delme.js
 create mode 100644 test/samples/browser-local/main.js

diff --git a/src/index.js b/src/index.js
index d2f75b5..f7d6cf5 100644
--- a/src/index.js
+++ b/src/index.js
@@ -239,9 +239,16 @@ export default function nodeResolve ( options = {} ) {
 				resolveOptions.preserveSymlinks = preserveSymlinks;
 			}
 
+			let importSpecifier = importee;
+
+			if (importer === undefined && !importee[0].match(/^\.?\.?\//)) {
+				// convert implicit relative path for `inputs`
+				// to an equivalent explicit relative path
+				importSpecifier = './' + importee;
+			}
+
 			const importeeIsBuiltin = builtins.has(importee);
 			const forceLocalLookup = importeeIsBuiltin && (!preferBuiltins || !isPreferBuiltinsSet);
-			let importSpecifier = importee;
 
 			if (forceLocalLookup) {
 				// need to attempt to look up a local module
diff --git a/test/package.json b/test/package.json
new file mode 100644
index 0000000..5d2dbc8
--- /dev/null
+++ b/test/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "test",
+  "version": "1.0.0",
+  "description": "",
+  "main": "test.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "browser": {
+    "dummy-module": "component-type"
+  }
+}
diff --git a/test/samples/browser-local/delme.js b/test/samples/browser-local/delme.js
new file mode 100644
index 0000000..9ef1725
--- /dev/null
+++ b/test/samples/browser-local/delme.js
@@ -0,0 +1,3 @@
+import s from 'dummy-module';
+
+export default x = 1;
\ No newline at end of file
diff --git a/test/samples/browser-local/main.js b/test/samples/browser-local/main.js
new file mode 100644
index 0000000..0560c2d
--- /dev/null
+++ b/test/samples/browser-local/main.js
@@ -0,0 +1,4 @@
+// test browser mapped imports from the main entrypoint
+import s from 'dummy-module';
+
+export default s;
\ No newline at end of file
diff --git a/test/test.js b/test/test.js
index d0b52f6..95d612b 100644
--- a/test/test.js
+++ b/test/test.js
@@ -337,6 +337,20 @@ describe( 'rollup-plugin-node-resolve', function () {
 		});
 	});
 
+	it('respects local browser field', function () {
+		return rollup.rollup({
+			input: 'samples/browser-local/main.js',
+			onwarn: expectNoWarnings,
+			plugins: [
+				nodeResolve({
+					mainFields: ['browser', 'main']
+				})
+			]
+		}).then(executeBundle).then(module => {
+			assert.equal(module.exports, 'component-type');
+		});
+	});
+
 	it( 'warns when importing builtins', function () {
 		return rollup.rollup({
 			input: 'samples/builtins/main.js',