@typespec/compiler/templates/library-ts/src/lib.ts

TypeSpec Compiler Preview

import { createTypeSpecLibrary, paramMessage } from "@typespec/compiler";

export const $lib = createTypeSpecLibrary({
  name: "{{name}}",
  // Define diagnostics for the library. This will provide a typed API to report diagnostic as well as a auto doc generation.
  diagnostics: {
    "banned-alternate-name": {
      severity: "error",
      messages: {
        default: paramMessage`Banned alternate name "${"name"}".`,
      },
    },
  },
  // Defined state keys for storing metadata in decorator.
  state: {
    alternateName: { description: "alternateName" },
  },
});

export const { reportDiagnostic, createDiagnostic, stateKeys: StateKeys } = $lib;