graphql-yoga/esm/cli/index.js

import yargs from 'yargs';
import { hideBin } from 'yargs/helpers';
import { loadConfig } from 'graphql-config';
import { CodeFileLoader } from '@graphql-tools/code-file-loader';
import { createYoga } from 'graphql-yoga';
import { createServer } from 'http';
import { addMocksToSchema } from '@graphql-tools/mock';
const terminateEvents = ['SIGINT', 'SIGTERM'];
function registerTerminateHandler(callback) {
    for (const eventName of terminateEvents) {
        process.on(eventName, () => callback(eventName));
    }
}
export const YogaExtensions = (api) => {
    const codeFileLoader = new CodeFileLoader({
        noPluck: true,
    });
    api.loaders.schema.register(codeFileLoader);
    api.loaders.documents.register(codeFileLoader);
    return {
        name: 'Yoga',
    };
};
export function graphqlYoga() {
    return yargs(hideBin(process.argv)).command('$0', 'Serves GraphQL over HTTP using your GraphQL Config', (builder) => {
        builder.option('project', {
            type: 'string',
            description: 'Project name',
        });
        builder.option('mock', {
            type: 'boolean',
            description: 'Mock the given schema',
        });
    }, async ({ project = 'default', mock }) => {
        console.info(`Loading GraphQL Config from ${process.cwd()}`);
        const config = await loadConfig({
            extensions: [YogaExtensions],
            throwOnMissing: false,
            throwOnEmpty: false,
        });
        console.log(`Loading project: ${project}`);
        const projectConfig = config?.getProject(project);
        console.log(`Loading GraphQL Schema of ${project}`);
        let schema = await projectConfig?.getSchema();
        if (!schema) {
            console.warn(`Could not find schema for project ${project} fallback to default schema`);
        }
        if (mock) {
            if (!schema) {
                console.warn('No schema found for mocking. Skipping mocking.');
            }
            else {
                console.log(`Adding mocks to the schema`);
                schema = addMocksToSchema({ schema });
            }
        }
        console.log(`Building GraphQL Server`);
        const yoga = createYoga({
            schema,
        });
        const server = createServer(yoga);
        console.log(`Starting GraphQL Server`);
        server.listen(4000);
        registerTerminateHandler(() => {
            server.close();
        });
    }).argv;
}
export * from 'graphql-yoga';