69 FPS in Bubble Tea

main.go

package main

import (
	"fmt"
	"time"

	tea "github.com/charmbracelet/bubbletea"
)

type stepMsg time.Time

func stepAnimation() tea.Cmd {
	return tea.Tick(time.Second/69, func(t time.Time) tea.Msg {
		return stepMsg(t)
	})
}

type model struct {
	frame int
}

func (m model) Init() tea.Cmd {
	return stepAnimation()
}

func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg.(type) {
	case tea.KeyMsg:
		return m, tea.Quit
	case stepMsg:
		m.frame++
		return m, stepAnimation()
	}
	return m, nil
}

func (m model) View() string {
	return fmt.Sprintf("Frame: %d", m.frame)
}

func main() {
	if err := tea.NewProgram(model{}).Start(); err != nil {
		fmt.Println("Oh no!", err)
	}
}