this is a bug

[lennylinyu]

rollup-plugin-sass/src/index.ts

Line 80 in 0425739

if (!inCss) return;

This should return a promise, but it returned undefined

[lennylinyu]

If the css file has blank data, throw [!] (plugin rollup-plugin-sass) TypeError: Cannot read properties of undefined (reading 'then')

[elycruz]

Good catch!

[elycruz]

Fix merged and published (see #153 ).