graphql-client-1.0.0: js/graphql-codegen-haskell-fallback.js

/**
 * This file should be loaded if, for some reason, `graphql-codegen-haskell.js`
 * isn't built yet.
 *
 * If this is the case, building `graphql-client` SHOULD NOT fail, but running
 * `graphql-codegen` SHOULD fail UNLESS the user gets a copy of
 * `graphql-codegen-haskell.js` themselves and points to it via the
 * `GRAPHQL_CODEGEN` environment variable.
 */

const fs = require('fs')
const path = require('path')
const utils = require('__utils')

const ERROR_MESSAGE = `
The graphql-codegen executable was built without the
graphql-codegen-haskell.js bundle. This can happen if you're building the
graphql-client package from a source other than Hackage.

If this is the case, get the graphql-codegen-haskell.js bundle manually and set
the GRAPHQL_CODEGEN environment variable to the location of that bundle. You
can get the bundle in one of the following ways:

  1. Download from CircleCI (recommended)
      a. Go to ${utils.GITHUB_URL}
      b. Navigate to the appropriate commit
      c. Click on the commit status icon and click on the 'test_latest' CI job
      d. Go to the Artifacts tab
      e. Download 'graphql-codegen-haskell.js'
  2. Build manually
      a. Clone ${utils.GITHUB_URL}
      b. Follow the instructions in DEVELOPER.md to build the bundle
`

const error = (msg) => {
  console.error(['*'.repeat(80), msg, ERROR_MESSAGE, '*'.repeat(80)].join('\n'))
  process.exit(1)
}

const requireFile = (file) => {
  try {
    return require(file)
  } catch (e) {
    error(`Could not load file ${file}:\n${e}`)
  }
}

const GRAPHQL_CODEGEN = process.env.GRAPHQL_CODEGEN
if (GRAPHQL_CODEGEN === undefined) {
  error('GRAPHQL_CODEGEN environment variable not set')
}

const codegenFileSrc = path.resolve(process.cwd(), GRAPHQL_CODEGEN)
const codegenFile = path.resolve(
  __dirname,
  './graphql-codegen-haskell-external.js'
)

// require(...) searches for a node_modules directory in the parents of the JS
// file being required, so copy the file into here.
fs.copyFileSync(codegenFileSrc, codegenFile)

requireFile(codegenFile).main()