@theguild/federation-composition/esm/graphql/contains-supergraph-spec.js

Open Source Composition library for Apollo Federation

import { Kind } from 'graphql';
import { extraFederationDirectiveNames, extraFederationTypeNames, getSupergraphSpecNodes, } from './supergraph-spec.js';
let containsSupergraphSpecRegex = null;
export function containsSupergraphSpec(sdl) {
    if (containsSupergraphSpecRegex !== null) {
        return containsSupergraphSpecRegex.test(sdl);
    }
    const patterns = [];
    for (const { name, kind } of getSupergraphSpecNodes()) {
        if (kind === Kind.DIRECTIVE) {
            patterns.push(`@${name}`);
        }
        else {
            patterns.push(`\\[${name}`, `\\s${name}`);
        }
    }
    extraFederationTypeNames.forEach(name => {
        patterns.push(`\\[${name}`, `\\s${name}`);
    });
    extraFederationDirectiveNames.forEach(name => {
        patterns.push(`@${name}`);
    });
    containsSupergraphSpecRegex = new RegExp(patterns.join('|'));
    return containsSupergraphSpecRegex.test(sdl);
}