How can I disable glow/shadow effect?

Effects can be disabled from 1 component (series, title, axis, legend, etc.) by using setEffect(enabled: boolean) methods. The exact method might have a prefix added to it, e.g. setTitleEffect().

// Example, disable effects from a point series
pointSeries.setEffect(false)

All effects can be disabled via Theme:

const chart = lightningChart().ChartXY({
    theme: disableThemeEffects(Themes.darkGold)
})