graphile-settings/esm/plugins/meta-schema/plugin.js

graphile settings

import { getCachedTablesMeta, setCachedTablesMeta } from './cache';
import { extendQueryWithMetaField } from './graphql-meta-field';
import { collectTablesMeta } from './table-meta-builder';
export const MetaSchemaPlugin = {
    name: 'MetaSchemaPlugin',
    version: '1.0.0',
    description: 'Exposes _meta query for database schema introspection',
    schema: {
        hooks: {
            init(input, rawBuild) {
                const build = rawBuild;
                setCachedTablesMeta(collectTablesMeta(build));
                return input;
            },
            GraphQLObjectType_fields(rawFields, _rawBuild, rawContext) {
                const context = rawContext;
                if (context.Self?.name !== 'Query')
                    return rawFields;
                return extendQueryWithMetaField(rawFields, getCachedTablesMeta());
            },
        },
    },
};