graphql-typed-client/src/cli.ts

A tool that generates a strongly typed client library for any GraphQL endpoint. The client allows writing GraphQL queries as plain JS objects (with type safety, awesome code completion experience, custom scalar type mapping, type guards and more)

#!/usr/bin/env node

import program from 'commander'
import Listr from 'listr'
import chalk from 'chalk'
import { task } from './cliHelpers/task'
import { validateConfigs } from './cliHelpers/validateConfigs'

import { Config } from './config'
import { requireModuleFromPath } from './helpers/files'

program
  .option('-o, --output <./myClient>', 'output directory')
  .option('-e, --endpoint <http://example.com/graphql>', 'GraphQL endpoint')
  .option('-p, --post', 'use POST for introspection query')
  .option('-s, --schema <./mySchema.graphql>', 'path to GraphQL schema definition file')
  .option('-f, --fetcher <./schemaFetcher.js>', 'path to introspection query fetcher file')
  .option('-c, --config <./myConfig.js>', 'path to config file')
  .option('-v, --verbose', 'verbose output')
  .parse(process.argv)

const resolveConfigs = (configs: Config | Config[]) => (Array.isArray(configs) ? configs : [configs])

const configs: Config[] = program.config
  ? resolveConfigs(<Config>requireModuleFromPath([program.config]))
  : [
      {
        endpoint: program.endpoint,
        post: program.post,
        schema: program.schema,
        output: program.output,
        fetcher: program.fetcher,
      },
    ]

if (!validateConfigs(configs)) program.help()

new Listr(configs.map(config => task(config)), { renderer: program.verbose ? 'verbose' : 'default' }).run().catch(e => {
  console.log(chalk.red(e.stack))
  process.exit(1)
})