Class ExitHandler

deps/npm/lib/cli/exit-handler.js:4–166

const { errorMessage, getExitCodeFromError } = require('../utils/error-message.js')

class ExitHandler {
  #npm = null
  #process = null
  #exited = false
  #exitErrorMessage = false

  #noNpmError = false

  get #hasNpm () {
    return !!this.#npm
  }

  get #loaded () {
    return !!this.#npm?.loaded
  }

  get #showExitErrorMessage () {
    if (!this.#loaded) {
      return false
    }
    if (!this.#exited) {
      return true
    }
    return this.#exitErrorMessage
  }

  get #notLoadedOrExited () {
    return !this.#loaded && !this.#exited
  }

  setNpm (npm) {
    this.#npm = npm
  }

  constructor ({ process }) {
    this.#process = process
    this.#process.on('exit', this.#handleProcessExitAndReset)
  }

  registerUncaughtHandlers () {
    this.#process.on('uncaughtException', this.#handleExit)
    this.#process.on('unhandledRejection', this.#handleExit)
  }

  exit (err) {
    this.#handleExit(err)
  }

  #handleProcessExitAndReset = (code) => {
    this.#handleProcessExit(code)

    // Reset all the state. This is only relevant for tests since in reality the process fully exits here.
    this.#process.off('exit', this.#handleProcessExitAndReset)
    this.#process.off('uncaughtException', this.#handleExit)
    this.#process.off('unhandledRejection', this.#handleExit)
    if (this.#loaded) {
      this.#npm.unload()
    }