Modules - strictly ESM imports and exports - imports, exports, re-exports, defaults, etc. it's all the same - import data files - no async imports / exports - no CommonJS - no export type / import type - nested module { ... } block whose decorators configure the module itself - JSON, TOML, and YAML imports become exact deeply readonly literal values at compile time - Markdown, CSS, HTML, and plain text import as string; images, fonts, Wasm, and other binary files import as uint8[] - with { type: ... } overrides the loader with json, toml, yaml, text, binary, or base64 export function square(value: float64): float64 { value * value } import { square } from "./geometry.ds"; square(4.0); - Globals