Need transpiling between compile and assemble

[3cp]

Currently gulp-vue-file relies on next step on gulp pipeline to transpile js/ts code. But assemble before transpiling could result invalid js code.

For example

@Component
export default class App {}

assemble will rewrite it into invalid code

@Component
const __vue_script__ = class App {}

Need to translate those new syntax (like the decorator showing above) before assembling.

[3cp]

Not sure how rollup-plugin-vue handles transpiling, need to read more on rollup architect.