Normalize absolute paths in default resolver

src/utils/defaults.js

@@ -19,7 +19,7 @@ export function resolveId ( importee, importer ) {
 	if ( typeof process === 'undefined' ) throw new Error( `It looks like you're using Rollup in a non-Node.js environment. This means you must supply a plugin with custom resolveId and load functions. See https://github.com/rollup/rollup/wiki/Plugins for more information` );
 
 	// absolute paths are left untouched
-	if ( isAbsolute( importee ) ) return addJsExtensionIfNecessary( importee );
+	if ( isAbsolute( importee ) ) return addJsExtensionIfNecessary( resolve( importee ) );
 
 	// if this is the entry point, resolve against cwd
 	if ( importer === undefined ) return addJsExtensionIfNecessary( resolve( process.cwd(), importee ) );

test/form/absolute-path-resolver/_config.js

@@ -1,7 +1,6 @@
 var path = require('path');
 
 module.exports = {
-	solo: true,
 	description: 'normalizes absolute ids',
 	options: {
 		plugins: [{