@exactjs/language-extension-api

@exactjs/language-extension-api defines the stable, serialized contracts used by trusted eXact language-service contributions. It is a development-time Node package and is never part of an eXact application's browser graph. Enhancement libraries and framework plugins use it when finite declarative metadata is insufficient for their diagnostics, completion, hover, hints, or safe source edits.

Define an analyzer

import type { ExactLanguageAnalyzerFactory } from '@exactjs/language-extension-api';

export const createExactLanguageAnalyzer: ExactLanguageAnalyzerFactory = async (context) => ({
	diagnostics: async (request) => []
});

Protocol boundary

Providers receive compiler-owned projections, not TypeScript compiler objects or an LSP connection. Executable providers require explicit analyzer trust from the consuming application. See compiler-aware language tools for application policy and the language contribution protocol for the complete protocol and security model.

Documentation | Source on GitHub