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Filename :
exit-handler.js
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const { log, output, META } = require('proc-log') 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.#handleProcesExitAndReset) } registerUncaughtHandlers () { this.#process.on('uncaughtException', this.#handleExit) this.#process.on('unhandledRejection', this.#handleExit) } exit (err) { this.#handleExit(err) } #handleProcesExitAndReset = (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.#handleProcesExitAndReset) this.#process.off('uncaughtException', this.#handleExit) this.#process.off('unhandledRejection', this.#handleExit) if (this.#loaded) { this.#npm.unload() } this.#npm = null this.#exited = false this.#exitErrorMessage = false } #handleProcessExit (code) { // Force exit code to a number if it has not been set const exitCode = typeof code === 'number' ? code : (this.#exited ? 0 : 1) this.#process.exitCode = exitCode if (this.#notLoadedOrExited) { // Exit handler was not called and npm was not loaded so we have to log something this.#logConsoleError(new Error(`Process exited unexpectedly with code: ${exitCode}`)) return } if (this.#logNoNpmError()) { return } const os = require('node:os') log.verbose('cwd', this.#process.cwd()) log.verbose('os', `${os.type()} ${os.release()}`) log.verbose('node', this.#process.version) log.verbose('npm ', `v${this.#npm.version}`) // only show the notification if it finished if (typeof this.#npm.updateNotification === 'string') { log.notice('', this.#npm.updateNotification, { [META]: true, force: true }) } if (!this.#exited) { log.error('', 'Exit handler never called!') log.error('', 'This is an error with npm itself. Please report this error at:') log.error('', ' <https://github.com/npm/cli/issues>') if (this.#npm.silent) { output.error('') } } log.verbose('exit', exitCode) if (exitCode) { log.verbose('code', exitCode) } else { log.info('ok') } if (this.#showExitErrorMessage) { log.error('', this.#npm.exitErrorMessage()) } } #logConsoleError (err) { // Run our error message formatters on all errors even if we // have no npm or an unloaded npm. This will clean the error // and possible return a formatted message about EACCESS or something. const { summary, detail } = errorMessage(err, this.#npm) const formatted = [...new Set([...summary, ...detail].flat().filter(Boolean))].join('\n') // If we didn't get anything from the formatted message then just display the full stack // eslint-disable-next-line no-console console.error(formatted === err.message ? err.stack : formatted) } #logNoNpmError (err) { if (this.#hasNpm) { return false } // Make sure we only log this error once if (!this.#noNpmError) { this.#noNpmError = true this.#logConsoleError( new Error(`Exit prior to setting npm in exit handler`, err ? { cause: err } : {}) ) } return true } #handleExit = (err) => { this.#exited = true // No npm at all if (this.#logNoNpmError(err)) { return this.#process.exit(this.#process.exitCode || getExitCodeFromError(err) || 1) } // npm was never loaded but we still might have a config loading error or // something similar that we can run through the error message formatter // to give the user a clue as to what happened.s if (!this.#loaded) { this.#logConsoleError(new Error('Exit prior to config file resolving', { cause: err })) return this.#process.exit(this.#process.exitCode || getExitCodeFromError(err) || 1) } this.#exitErrorMessage = err?.suppressError === true ? false : !!err // Prefer the exit code of the error, then the current process exit code, // then set it to 1 if we still have an error. Otherwise we call process.exit // with undefined so that it can determine the final exit code const exitCode = err?.exitCode ?? this.#process.exitCode ?? (err ? 1 : undefined) // explicitly call process.exit now so we don't hang on things like the // update notifier, also flush stdout/err beforehand because process.exit doesn't // wait for that to happen. this.#process.stderr.write('', () => this.#process.stdout.write('', () => { this.#process.exit(exitCode) })) } } module.exports = ExitHandler