There are some indicators on TradingView website that are in pine script and I like to add them to chart library so I have them on my website. But I've done a lot of search, and didn't find how to do that. Any help would be appreciated.
This is on of those indicators that I like to convert to JavaScript:
// This work is licensed under a Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) https://creativecommons.org/licenses/by-nc-sa/4.0/
// © LuxAlgo
//@version=4
study("Nadaraya-Watson Estimator [LUX]",overlay=true,max_lines_count=500,max_bars_back=500)
h = input(8.,'Bandwidth')
src = input(close,'Source')
//----
n = bar_index
var ln = array.new_line(0)
if barstate.isfirst
for i = 0 to 499
array.push(ln,line.new(na,na,na,na))
//----
float y2 = na
float y1 = na
float y1_d = na
//----
line l = na
label lb = na
if barstate.islast
for i = 0 to min(499,n-1)
sum = 0.
sumw = 0.
for j = 0 to min(499,n-1)
w = exp(-(pow(i-j,2)/(h*h*2)))
sum += src[j]*w
sumw += w
y2 := sum/sumw
d = y2 - y1
l := array.get(ln,i)
line.set_xy1(l,n-i+1,y1)
line.set_xy2(l,n-i,y2)
line.set_color(l,y2 > y1 ? #ff1100 : #39ff14)
line.set_width(l,2)
if d > 0 and y1_d < 0
label.new(n-i+1,src[i],'▲',color=#00000000,style=label.style_label_up,textcolor=#39ff14,textalign=text.align_center)
if d < 0 and y1_d > 0
label.new(n-i+1,src[i],'▼',color=#00000000,style=label.style_label_down,textcolor=#ff1100,textalign=text.align_center)
y1 := y2
y1_d := d