use require to import modules when input is not a module

[RiESAEX]

For polyfills and external helpers when input is not a module, swc will throw unreachable.
There is no standard way to import a module in script, but swc's module passing and webpack understand require.
I think we can use require to import modules when input is not a module
relative to #6500 #6500

[kdy1]

I agree, we can use require for scripts.