This is a core library plus some indicators for Technical Analysis (TA) written in Javascript vanilla. Some functions and indicators are:
dema
tema
trix
tma
macd
momemtum
roc
boolinger
adl
stochasticsFast
williamsR
inside
outside
range
gapDown
gapUp
median
medianSeries
variance
stdDev
weighted
typical
slope
rising
falling
cross
barsAgo
barsUp
barsDown
nBarsUp
nBarsDown
highestBar
lowestBar
count
low
high
open
close
volume
yesterday
sma
ema
cum
prod
sum
dif
mul
div
sumIf
countIf
countIfPrev
predicate
max
min
lowest
highest
pow
sqrt
cbrt
abs
ceil
floor
round
hypot
log
log10
sin
tan
tanh
random
Implementation of new indicators is really very easy.