evalScript doesn't support module

[XuJiandong]

❯ cat bar.mjs
import * as std from "std";

try {
    let result = std.evalScript(`
        import * as os from "os";
        os.getcwd()
    `, "async");
    console.log(result);
} catch (e) {
    console.log("Uncaught error:", e);
}
❯ qjs bar.mjs
Uncaught error: SyntaxError: expecting '('

This statement import * as os from "os"; causes this issue.

[Kreijstal]

esm is not es6