Define your domains, bounded contexts, context maps, and team ownership in a concise .dlang syntax — with full editor support in VS Code.
DomainLang brings Domain-Driven Design modeling into your editor. You get syntax highlighting, IntelliSense, real-time validation, formatting, and navigation features that make .dlang files feel like first-class citizens alongside your code.
Domain Commerce {
vision: "Deliver seamless customer buying experiences"
}
Team SalesTeam
Team PaymentsTeam
Classification Core
bc OrderContext for Commerce as Core by SalesTeam {
description: "Owns the order lifecycle"
}
bc PaymentContext for Commerce as Core by PaymentsTeam {
description: "Owns payment authorization and capture"
}
ContextMap CommerceMap {
contains OrderContext, PaymentContext
[OHS] OrderContext -> [ACL] PaymentContext
}
As you type, DomainLang validates your model, auto-completes references, and shows inline documentation on hover. Formatting keeps your models consistent, and go-to-definition lets you navigate large models instantly.
Editor features
Syntax highlighting for .dlang files
IntelliSense with keyword and cross-reference completion
Real-time validation with actionable diagnostics
Hover documentation for every element
Go to definition and find references
Document formatting
Syntax highlighting in Markdown fenced code blocks
AI tools for Copilot and agents
The extension exposes four language model tools that any VS Code agent can call:
Tool
What it does
domainlang_validate
Validate a model or workspace and return diagnostics
domainlang_list
List and filter domains, bounded contexts, teams, and more
domainlang_get
Retrieve element details or a high-level model summary
domainlang_explain
Get a rich Markdown explanation of any element by FQN
Try these prompts with Copilot Chat:
"Validate my DomainLang model."
"List all bounded contexts owned by PaymentsTeam."
"Explain Acme.Sales.OrderContext."
Extension settings
Setting
Default
Description
domainlang.lsp.traceImports
false
Log detailed import resolution traces in language server output
domainlang.lsp.infoLogs
false
Log info-level messages and timing in language server output
