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x/ldkit/library/global.ts

LDkit - Linked Data query toolkit for TypeScript developers
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import type { Context, IQueryEngine } from "./rdf.ts";import { QueryEngine } from "./engine/mod.ts";
let defaultContext: Context | undefined = undefined;let defaultEngine: IQueryEngine | undefined = undefined;
export const setDefaultContext = (context: Context) => { defaultContext = context;};
export const resolveContext = (context?: Context) => { if (!context && !defaultContext) { throw new Error( "No context found. Please create a default context or pass one to createLens function", ); } return context || defaultContext!;};
export const setDefaultEngine = (engine: IQueryEngine) => { defaultEngine = engine;};
export const resolveEngine = (engine?: IQueryEngine) => { if (!engine && !defaultEngine) { setDefaultEngine(new QueryEngine()); // TODO: consider the consequences here, maybe log a warning? /*throw new Error( "No engine found. Please create a default engine or pass one to createLens function", );*/ } return engine || defaultEngine!;};