allow scoped packages to be skipped – fixes #15

Author: Rich-Harris

src/index.js

@@ -16,8 +16,13 @@ export default function npm ( options ) {
 
 	return {
 		resolveId ( importee, importer ) {
-			const parts = importee.split( /[\/\\]/ );
-			const id = parts.shift();
+			let parts = importee.split( /[\/\\]/ );
+			let id = parts.shift();
+
+			// scoped packages
+			if ( id[0] === '@' && parts.length ) {
+				id += `/${parts.shift()}`;
+			}
 
 			if ( ~skip.indexOf(id) ) return null;
 

test/node_modules/@scoped/foo/index.js

@@ -0,0 +1,3 @@
+import foo from '@scoped/foo';
+
+foo();

test/samples/scoped/main.js

@@ -197,4 +197,17 @@ describe( 'rollup-plugin-npm', function () {
 			assert.equal( module.exports, path.sep );
 		});
 	});
+
+	it( 'allows scoped packages to be skipped', () => {
+		return rollup.rollup({
+			entry: 'samples/scoped/main.js',
+			plugins: [
+				npm({
+					skip: [ '@scoped/foo' ]
+				})
+			]
+		}).then( bundle => {
+			assert.deepEqual( bundle.imports, [ '@scoped/foo' ]);
+		});
+	});
 });