1// This is separate to indicate that it should contain code we expect to work in
2// all versions of node >= 6.  This is a best effort to catch syntax errors to
3// give users a good error message if they are using a node version that doesn't
4// allow syntax we are using such as private properties, etc. This file is
5// linted with ecmaVersion=6 so we don't use invalid syntax, which is set in the
6// .eslintrc.local.json file
7
8const { engines: { node: engines }, version } = require('../../package.json')
9const npm = `v${version}`
10
11module.exports = (process, getCli) => {
12  const node = process.version
13
14  /* eslint-disable-next-line max-len */
15  const unsupportedMessage = `npm ${npm} does not support Node.js ${node}. This version of npm supports the following node versions: \`${engines}\`. You can find the latest version at https://nodejs.org/.`
16
17  /* eslint-disable-next-line max-len */
18  const brokenMessage = `ERROR: npm ${npm} is known not to run on Node.js ${node}.  This version of npm supports the following node versions: \`${engines}\`. You can find the latest version at https://nodejs.org/.`
19
20  // coverage ignored because this is only hit in very unsupported node versions
21  // and it's a best effort attempt to show something nice in those cases
22  /* istanbul ignore next */
23  const syntaxErrorHandler = (err) => {
24    if (err instanceof SyntaxError) {
25      // eslint-disable-next-line no-console
26      console.error(`${brokenMessage}\n\nERROR:`)
27      // eslint-disable-next-line no-console
28      console.error(err)
29      return process.exit(1)
30    }
31    throw err
32  }
33
34  process.on('uncaughtException', syntaxErrorHandler)
35  process.on('unhandledRejection', syntaxErrorHandler)
36
37  // require this only after setting up the error handlers
38  const cli = getCli()
39  return cli(process, {
40    node,
41    npm,
42    engines,
43    unsupportedMessage,
44    off: () => {
45      process.off('uncaughtException', syntaxErrorHandler)
46      process.off('unhandledRejection', syntaxErrorHandler)
47    },
48  })
49}
50