feat(rollup): pass params to svelte compilers

Author: tivac

rollup/svelte2.js

@@ -33,7 +33,8 @@ module.exports = (args = {}) => {
             const { js } = compile(result.toString(), {
                 onwarn : (warning) => this.warn(warning),
 
-                ...options.options,
+                ...defaults.options,
+                ...(args.options || {}),
 
                 filename,
             });

rollup/svelte3.js

@@ -32,7 +32,8 @@ module.exports = (args = {}) => {
             dependencies.forEach((dep) => this.addWatchFile(dep));
 
             const { js, warnings } = compile(processed, {
-                ...options.options,
+                ...defaults.options,
+                ...(args.options || {}),
 
                 filename,
             });