Posix paths

Author: NotWoods

packages/typescript/src/index.ts

@@ -89,7 +89,7 @@ export default function typescript(options: RollupTypescriptOptions = {}): Plugi
         if (code) {
           this.emitFile({
             type: 'asset',
-            fileName: path.relative(outputOptions.dir!, id),
+            fileName: path.posix.relative(outputOptions.dir!, id),
             source: code
           });
         }
@@ -99,7 +99,7 @@ export default function typescript(options: RollupTypescriptOptions = {}): Plugi
       if (tsBuildInfoPath) {
         this.emitFile({
           type: 'asset',
-          fileName: path.relative(outputOptions.dir!, tsBuildInfoPath),
+          fileName: path.posix.relative(outputOptions.dir!, tsBuildInfoPath),
           source: emittedFiles.get(tsBuildInfoPath)
         });
       }

packages/typescript/test/test.js

@@ -54,7 +54,7 @@ test('supports creating declaration files', async (t) => {
     ['main.js', 'main.d.ts']
   );
 
-  t.is(output[1].source, 'declare const answer = 42;\n');
+  t.true(output[1].source.includes('declare const answer = 42;'), output[1].source);
 });
 
 test('supports creating declaration files in subfolder', async (t) => {
@@ -197,7 +197,7 @@ test('relative paths in tsconfig.json are resolved relative to the file', async
     ['main.js', 'main.d.ts']
   );
 
-  t.is(output[1].source, 'declare const answer = 42;\n');
+  t.true(output[1].source.includes('declare const answer = 42;'), output[1].source);
 });
 
 test('throws for unsupported module types', async (t) => {