Identify Silicon or Intel Computer

Here you go

var sType = sf.system.exec({
    commandLine: `[[ "$(uname -m)" == "arm64" ]] && echo "Apple Silicon" || echo "Intel"`,
});

if (sType.result === "Apple Silicon") {
    //Do Apple Silicon Stuff
}
else if (sType.result === "Intel") {
    //Do Intel stuff
}

Here's an alternate version constructed in a slightly different way...

const processorTypeLookup = {
    "arm64": "Apple Silicon",
    "x86_64": "Intel"
}

const processorArchitecture = sf.system.exec({ commandLine: `uname -m` }).result;
const processorType = processorTypeLookup[processorArchitecture];

if (processorType === "Apple Silicon") {
    // Add Apple Silicon code here
    log("This mac running on Apple Silicon");
} else if (processorType === "Intel") {
    // Add Intel code here
    log("This mac running on Intel");
}

// For Testing purposes
log({ processorArchitecture, processorType });