Set vmTargetFunctionsMode: 'comment' to only VM-obfuscate functions decorated with a special comment. Works at any nesting level.

function regularFunction() {
    return 'not virtualized';
}

/* javascript-obfuscator:vm */
function sensitiveFunction() {
    return 'this will be VM-protected';
}

class MyClass {
    /* javascript-obfuscator:vm */
    sensitiveMethod() {
        return 'method will be VM-protected';
    }
}

Only root-level functions are considered. Use vmTargetFunctions to allow-list or vmExcludeFunctions to exclude functions by name.

// Protect only these specific functions
{
    vmObfuscation: true,
    vmTargetFunctions: ['validateLicense', 'checkAuth']
}

// Or protect everything EXCEPT these
{
    vmObfuscation: true,
    vmExcludeFunctions: ['render', 'animate']
}