Has anyone used Mesa Sinewave with Thinkorswim for day trading with successs? Does anyone have code for a better non-proprietary Sinewave TOS indicator? Looking over the 2 minute chart of the ES, the Mesa Sinewave indicator offers good oscillator readings compared to stochastic/rsi indicators.

if you can't find it on NexusFi (formerly BMT), there's always this, but you would have to pay:

https://www.thinkscripter.com/indicator/sine-wave-cycles/

Anecdotally, I tried using SineWaveCycles for awhile but I didn't find it very helpful. Perhaps you will have a better experience.