The version of gulp-rollup used is outdated, meaning rollup's version of acorn is outdated.
Ultimately this causes the build process to fail, since there is a parsing error when the object spread or rest operators are encountered (since this version acorn does not support parsing them).
This can be fixed by updating gulp-rollup to the latest version.
The version of
gulp-rollupused is outdated, meaningrollup's version ofacornis outdated. Ultimately this causes the build process to fail, since there is a parsing error when the object spread or rest operators are encountered (since this versionacorndoes not support parsing them).This can be fixed by updating
gulp-rollupto the latest version.