wgc/dist/src/commands/mcp/tools/utils/schema.js

The official CLI tool to manage the GraphQL Federation Platform Cosmo

import { parse, visit } from 'graphql';
import { buildASTSchema } from '@wundergraph/composition';
/**
 * Removes all directive definitions and directive usages from a GraphQL schema string
 * and returns a built GraphQLSchema.
 *
 * @param schemaString - The GraphQL schema string to process
 * @returns A built GraphQLSchema with all directives removed
 */
export function buildSchemaWithoutDirectives(schemaString) {
    // Parse the schema into an AST
    try {
        const ast = parse(schemaString, { noLocation: true });
        // Visit the AST and remove all directives
        const cleanedAst = visit(ast, {
            // Remove directive definitions
            DirectiveDefinition: () => null,
            // Remove directive usages from any node that can have directives
            Directive: () => null,
        });
        // Build and return the schema
        return buildASTSchema(cleanedAst, { assumeValid: true, assumeValidSDL: true });
    }
    catch (error) {
        throw new Error(`Failed to parse schema: ${error.message}`);
    }
}
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