How To Transcode and Re-size A Video Without Compressing It In fluent-ffmpeg

Question

Simple question, how can I transcode and resize a video in fluent-ffmpeg, without compressing it? I understand that some transcoding processes may naturally affect file size, but is there a way to reduce or increase the compression ratio in ffmpeg?

I found other stack overflow answers for the FFMPEG CLI CRF, but how can I adjust the CRF in fluent?

//input {2160x1440} MOV 15MB

const command = ffmpeg()
        .input(video)
        .setFfmpegPath(ffmpegStatic)
        .setFfprobePath(ffprobeStatic.path)
        .videoCodec("libx264")
        .audioCodec("libmp3lame")
        .aspect("16:9")
        .outputFormat("mp4")
        .size(`1920x1080`)
        .save("./transcoded/wout/compression/video.mp4")
        
//output {1920x1080} MP4 15MB