Thunder

Build Lightning Experience Apps in Go

Thunder lets you build Salesforce Lightning Experience applications in Go that compile to WebAssembly. Write type-safe, maintainable applications using the Elm Architecture pattern with professional SLDS-styled components.

Key Features

Go + WebAssembly - Write Lightning apps in Go, compile to WASM
SLDS Components - Complete library of Lightning Design System components
Elm Architecture - Predictable state management with masc framework
Local Development - Rapid development with hot reload
Type Safety - Compile-time checking for reliable applications

Getting Started

# Install Thunder CLI
go install github.com/octoberswimmer/thunder/cmd/thunder@latest

# Login to Salesforce
force login

# Serve locally with hot reload
thunder serve ./myapp

# Deploy to Salesforce
thunder deploy ./myapp --tab

Component Library

Thunder provides a comprehensive set of components for building Lightning apps:

Form Components - TextInput, Textarea, Select, Datepicker, Checkbox, RadioGroup with validation
Layout Components - Grid, Card, Modal, Page layouts with semantic spacing
Data Components - DataTable with sorting/actions, Lookup, AddressAutocomplete
UI Components - Button, Badge, Icon, ProgressBar, Spinner, Toast, Tabs

Example Application

func (m *AppModel) Render(send func(masc.Msg)) masc.ComponentOrHTML {
	headers := []string{"Name", "Industry"}
	rows := []map[string]string{
		{"Name": "Acme Corp", "Industry": "Manufacturing"},
		{"Name": "Stark Industries", "Industry": "Technology"},
	}

	return components.Page(
		components.PageHeader("Accounts", "Manage your accounts"),
		components.Card("Account List",
			components.DataTable(headers, rows),
		),
	)
}

Use Cases

Custom UIs - Build tailored interfaces for specific business processes
Data Entry Forms - Complex forms with validation and business logic
Dashboard Apps - Interactive dashboards with real-time data
Simplify Maintenance - Replace rich, but hard-to-maintain application frameworks such as OmniStudio
Record Actions - Custom actions on Lightning record pages
Migration Tools - Replace Visualforce pages with modern Lightning apps

Docs

GitHub Repository →

Example Applications →

Requirements

• Go 1.24+
• Force CLI
• Lightning Web Security enabled in Salesforce org