RegexOptions: "i" | "m" | "s" | "x" | "is" | "im" | "ix" | "si" | "sm" | "sx" | "mi" | "ms" | "mx" | "xi" | "xs" | "xm" | "ism" | "isx" | "ims" | "imx" | "ixs" | "ixm" | "sim" | "six" | "smi" | "smx" | "sxi" | "sxm" | "mis" | "mix" | "msi" | "msx" | "mxi" | "mxs" | "xis" | "xim" | "xsi" | "xsm" | "xmi" | "xms" | "ismx" | "isxm" | "imsx" | "imxs" | "ixsm" | "ixms" | "simx" | "sixm" | "smix" | "smxi" | "sxim" | "sxmi" | "misx" | "mixs" | "msix" | "msxi" | "mxis" | "mxsi" | "xism" | "xims" | "xsim" | "xsmi" | "xmis" | "xmsi"