Atscript is a type-safe annotation language that extends TypeScript-style type definitions with structured metadata. It compiles .as files into standard TypeScript and JavaScript with full runtime type information, enabling validation, documentation, schema generation, and more — all driven by annotations on your types.
This extension provides first-class editor support for Atscript in VS Code.
Features
Syntax highlighting — full grammar support for .as files including interfaces, types, annotations, imports, and ad-hoc annotate blocks
Autocomplete — context-aware suggestions for annotations and their arguments, type references, imported definitions, and top-level keywords (import, export, annotate, interface, type)
Hover tooltips — inline documentation for annotations, showing argument types and descriptions
Diagnostics — real-time error reporting for unknown identifiers, invalid annotation usage, unknown properties in annotate blocks, and more
Go to definition — navigate to type and interface declarations, including cross-file imports
Find references — locate all usages of a type or interface across your project
Installation
Open VS Code
Go to Extensions (Ctrl+Shift+X)
Search for "Atscript" and install
Usage
Open any .as file to activate Atscript language support
Define interfaces and types with @annotations for metadata
Use annotate blocks to attach metadata to existing types without modifying them
The extension picks up your project's atscript.config.mts for annotation definitions and primitives
