const $JSRTS = {
    throw: function (x) {
        throw x;
    },
    Lazy: function (e) {
        this.js_idris_lazy_calc = e;
        this.js_idris_lazy_val = void 0;
    },
    force: function (x) {
        if (x === undefined || x.js_idris_lazy_calc === undefined) {
            return x
        } else {
            if (x.js_idris_lazy_val === undefined) {
                x.js_idris_lazy_val = x.js_idris_lazy_calc()
            }
            return x.js_idris_lazy_val
        }
    },
    prim_strSubstr: function (offset, len, str) {
        return str.substr(Math.max(0, offset), Math.max(0, len))
    }
};