27 lines
891 B
Plaintext
27 lines
891 B
Plaintext
// Port of Sindre Sorhus' Sparkly to Rescript
|
|
// reference implementation: https://github.com/sindresorhus/sparkly
|
|
// Omitting rgb "fire" style, so no `chalk` dependency
|
|
// Omitting: NaN handling, special consideration for constant data.
|
|
|
|
let ticks = [`▁`, `▂`, `▃`, `▄`, `▅`, `▆`, `▇`, `█`]
|
|
|
|
let _ticksLength = E.A.length(ticks)
|
|
|
|
let _heightToTickIndex = (maximum: float, v: float) => {
|
|
let suggestedTickIndex = Js.Math.ceil_int(v /. maximum *. Belt.Int.toFloat(_ticksLength)) - 1
|
|
max(suggestedTickIndex, 0)
|
|
}
|
|
|
|
let create = (relativeHeights: array<float>, ~maximum=?, ()) => {
|
|
if E.A.length(relativeHeights) === 0 {
|
|
""
|
|
} else {
|
|
let maximum = maximum->E.O2.default(E.A.max(relativeHeights)->E.O2.toExn(""))
|
|
|
|
relativeHeights
|
|
->E.A2.fmap(_heightToTickIndex(maximum))
|
|
->E.A2.fmap(r => E.A.get(ticks, r)->E.O2.toExn(""))
|
|
->E.A2.joinWith("")
|
|
}
|
|
}
|