Try #573:

bors[bot] · web-flow · commit ca55dbe04663 · 2020-03-12T18:10:50.000Z
diff --git a/src/index.js b/src/index.js
@@ -552,8 +552,7 @@ function createConfig(options, entry, format, writeMeta) {
 								compilerOptions: {
 									sourceMap: options.sourcemap,
 									declaration: true,
-									jsx: 'react',
-									jsxFactory: options.jsx || 'h',
+									jsx: 'preserve',
 								},
 							},
 							tsconfig: options.tsconfig,
