From b7d431255c74bd5f499b317db7e45792b8932c03 Mon Sep 17 00:00:00 2001 From: stelcheck Date: Wed, 20 Dec 2017 17:19:55 +0900 Subject: [PATCH] Removing subprocess. This commit: 1. Cleans up how the code is loaded 2. Removes the necessity to use 'spawn' Replaces #476 Replaces #489 --- package-lock.json | 1336 +++++++++++++++++++++++++++++++++++++++++++++ src/_bin.ts | 251 +++------ src/args.ts | 162 ++++++ src/bin.ts | 94 +--- src/index.spec.ts | 45 +- tests/signals.ts | 12 - 6 files changed, 1602 insertions(+), 298 deletions(-) create mode 100644 package-lock.json create mode 100644 src/args.ts delete mode 100644 tests/signals.ts diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 000000000..e2ab55f66 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,1336 @@ +{ + "name": "ts-node", + "version": "3.3.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "@types/arrify": { + "version": "1.0.2", + "resolved": "https://registry.npmjs.org/@types/arrify/-/arrify-1.0.2.tgz", + "integrity": "sha512-gB1Oqypj/WbMjnWyCcvQdynRyfusKtqzUpt+EN/OtgFcjikC7ZV4qzS3SLbO1Ai2B0iVSgWvwR9A49lZGfivYg==" + }, + "@types/chai": { + "version": "4.0.5", + "resolved": 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version?: boolean - help?: boolean - compiler?: string - project?: string - require?: string | string[] - ignore?: boolean | string | string[] - ignoreWarnings?: string | string[] - compilerOptions?: any - _: string[] -} - -const strings = ['eval', 'print', 'compiler', 'project', 'ignoreWarnings', 'require', 'cacheDirectory', 'ignore'] -const booleans = ['help', 'typeCheck', 'version', 'cache'] - -const aliases: { [key: string]: string[] } = { - help: ['h'], - version: ['v'], - eval: ['e'], - print: ['p'], - project: ['P'], - compiler: ['C'], - require: ['r'], - typeCheck: ['type-check'], - cacheDirectory: ['cache-directory'], - ignoreWarnings: ['I', 'ignore-warnings'], - compilerOptions: ['O', 'compiler-options'] -} - -let stop = process.argv.length - -function isFlagOnly (arg: string) { - const name = arg.replace(/^--?/, '') - - // The value is part of this argument. - if (/=/.test(name) || /^--no-/.test(arg)) { - return true - } +import { register, Register, VERSION, getFile, fileExists, TSError, parse, printError } from './index' - for (const bool of booleans) { - if (name === bool) { - return true - } - - const alias = aliases[bool] - - if (alias) { - for (const other of alias) { - if (other === name) { - return true - } - } - } - } - - return false -} - -// Hack around known subarg issue with `stopEarly`. -for (let i = 2; i < process.argv.length; i++) { - const arg = process.argv[i] - const next = process.argv[i + 1] - - if (/^\[/.test(arg) || /\]$/.test(arg)) { - continue - } - - if (/^-/.test(arg)) { - // Skip next argument. - if (!isFlagOnly(arg) && !/^-/.test(next)) { - i++ - } - - continue - } - - stop = i - break -} +const cwd = process.cwd() -const argv = minimist(process.argv.slice(2, stop), { - string: strings, - boolean: booleans, - alias: aliases, - default: { - cache: null, - typeCheck: null - } -}) - -if (argv.help) { - console.log(` -Usage: ts-node [options] [ -e script | script.ts ] [arguments] - -Options: - - -e, --eval [code] Evaluate code - -p, --print [code] Evaluate code and print result - -r, --require [path] Require a node module for execution - -C, --compiler [name] Specify a custom TypeScript compiler - -I, --ignoreWarnings [code] Ignore TypeScript warnings by diagnostic code - -P, --project [path] Path to TypeScript project (or \`false\`) - -O, --compilerOptions [opts] JSON object to merge with compiler options - -F, --fast Run TypeScript compilation in transpile mode - --ignore [regexp], --no-ignore Set the ignore check (default: \`/node_modules/\`) - --no-cache Disable the TypeScript cache - --cache-directory Configure the TypeScript cache directory -`) - - process.exit(0) -} +/** + * Eval helpers. + */ +const EVAL_FILENAME = `[eval].ts` +const EVAL_PATH = join(cwd, EVAL_FILENAME) +const EVAL_INSTANCE = { input: '', output: '', version: 0, lines: 0 } -const cwd = process.cwd() -const code = argv.eval === undefined ? argv.print : argv.eval -const isEvalScript = typeof argv.eval === 'string' || !!argv.print // Minimist struggles with empty strings. -const isEval = isEvalScript || stop === process.argv.length -const isPrinted = argv.print !== undefined - -// Register the TypeScript compiler instance. -const service = register({ - typeCheck: argv.typeCheck, - cache: argv.cache, - cacheDirectory: argv.cacheDirectory, - compiler: argv.compiler, - project: argv.project, - ignore: argv.ignore, - ignoreWarnings: argv.ignoreWarnings, - compilerOptions: parse(argv.compilerOptions), - getFile: isEval ? getFileEval : getFile, - fileExists: isEval ? fileExistsEval : fileExists -}) - -// Output project information. -if (argv.version) { +/** + * Print version information for debugging purposes, and exit + * + * @param exitCode + */ +function printVersionInformationAndExit (service: any, exitCode: number = 0) { console.log(`ts-node v${VERSION}`) console.log(`node ${process.version}`) console.log(`typescript v${service.ts.version}`) console.log(`cache ${JSON.stringify(service.cachedir)}`) - process.exit(0) + process.exit(exitCode) } -// Require specified modules before start-up. -(Module as any)._preloadModules(arrify(argv.require)) +/** + * Interface describing the object received by + * the exported execute method + */ +export interface IExecuteOptions { + tsNodeArgs: ITSNodeArgs + scriptFile: string + scriptArgs: string[] +} /** - * Eval helpers. + * Execute the received script, or start in REPL mode */ -const EVAL_FILENAME = `[eval].ts` -const EVAL_PATH = join(cwd, EVAL_FILENAME) -const EVAL_INSTANCE = { input: '', output: '', version: 0, lines: 0 } +export function execute ({ + tsNodeArgs, + scriptFile, + scriptArgs +}: IExecuteOptions) { + const code = tsNodeArgs.eval === undefined ? tsNodeArgs.print : tsNodeArgs.eval + const isPrinted = tsNodeArgs.print !== undefined + const isEval = scriptArgs.length === 0 + + // Minimist struggles with empty strings. + const isEvalScript = typeof tsNodeArgs.eval === 'string' || !!tsNodeArgs.print + + // Register the TypeScript compiler instance. + const service = register({ + typeCheck: tsNodeArgs.typeCheck, + cache: tsNodeArgs.cache, + cacheDirectory: tsNodeArgs.cacheDirectory, + compiler: tsNodeArgs.compiler, + project: tsNodeArgs.project, + ignore: tsNodeArgs.ignore, + ignoreWarnings: tsNodeArgs.ignoreWarnings, + compilerOptions: parse(tsNodeArgs.compilerOptions), + getFile: isEval ? getFileEval : getFile, + fileExists: isEval ? fileExistsEval : fileExists + }) + + // Output project information. + if (tsNodeArgs.version) { + return printVersionInformationAndExit(service) + } -// Execute the main contents (either eval, script or piped). -if (isEvalScript) { - evalAndExit(code as string, isPrinted) -} else { - if (stop < process.argv.length) { - const args = process.argv.slice(stop) - args[0] = resolve(cwd, args[0]) - process.argv = ['node'].concat(args) + // Require specified modules before start-up. + (Module as any)._preloadModules(arrify(tsNodeArgs.require)) + + // Execute the main contents (either eval, script or piped). + if (isEvalScript) { + // Evaluate the script bit fed as a CLI argument + evalAndExit(service, code as string, isPrinted) + } else if (scriptFile) { + // We received a file to run, run this file + process.argv = ['node', scriptFile].concat(scriptArgs) process.execArgv.unshift(__filename) Module.runMain() + } else if ((process.stdin as any).isTTY) { + // Run the REPL + startRepl(service) } else { - // Piping of execution _only_ occurs when no other script is specified. - if ((process.stdin as any).isTTY) { - startRepl() - } else { - let code = '' - process.stdin.on('data', (chunk: Buffer) => code += chunk) - process.stdin.on('end', () => evalAndExit(code, isPrinted)) - } + // We do not have a TTY, read script from stdin + let code = '' + process.stdin.on('data', (chunk: Buffer) => code += chunk) + process.stdin.on('end', () => evalAndExit(service, code, isPrinted)) } } /** * Evaluate a script. */ -function evalAndExit (code: string, isPrinted: boolean) { +function evalAndExit (service: Register, code: string, isPrinted: boolean) { const module = new Module(EVAL_FILENAME) module.filename = EVAL_FILENAME module.paths = (Module as any)._nodeModulePaths(cwd) @@ -204,7 +115,7 @@ function evalAndExit (code: string, isPrinted: boolean) { let result: any try { - result = _eval(code, global) + result = _eval(service, code, global) } catch (error) { if (error instanceof TSError) { console.error(printError(error)) @@ -222,7 +133,7 @@ function evalAndExit (code: string, isPrinted: boolean) { /** * Evaluate the code snippet. */ -function _eval (input: string, context: any) { +function _eval (service: Register, input: string, context: any) { const lines = EVAL_INSTANCE.lines const isCompletion = !/\n$/.test(input) const undo = appendEval(input) @@ -262,12 +173,12 @@ function exec (code: string, filename: string, context: any) { /** * Start a CLI REPL. */ -function startRepl () { +function startRepl (service: Register) { const repl = start({ prompt: '> ', input: process.stdin, output: process.stdout, - eval: replEval, + eval: replEval.bind(null, service), useGlobal: false }) @@ -306,7 +217,7 @@ function startRepl () { /** * Eval code from the REPL. */ -function replEval (code: string, context: any, _filename: string, callback: (err?: Error, result?: any) => any) { +function replEval (service: Register, code: string, context: any, _filename: string, callback: (err?: Error, result?: any) => any) { let err: any let result: any @@ -317,7 +228,7 @@ function replEval (code: string, context: any, _filename: string, callback: (err } try { - result = _eval(code, context) + result = _eval(service, code, context) } catch (error) { if (error instanceof TSError) { // Support recoverable compilations using >= node 6. diff --git a/src/args.ts b/src/args.ts new file mode 100644 index 000000000..2468ecb91 --- /dev/null +++ b/src/args.ts @@ -0,0 +1,162 @@ +import v8flags = require('v8flags') +import minimist = require('minimist') +import { isAbsolute, sep } from 'path' + +/** + * Print help output, and exit + */ +function printHelpAndExit (exitCode: number = 0) { + console.log(` +Usage: ts-node [options] [ -e script | script.ts ] [arguments] + +Options: + + -e, --eval [code] Evaluate code + -p, --print [code] Evaluate code and print result + -r, --require [path] Require a node module for execution + -C, --compiler [name] Specify a custom TypeScript compiler + -I, --ignoreWarnings [code] Ignore TypeScript warnings by diagnostic code + -P, --project [path] Path to TypeScript project (or \`false\`) + -O, --compilerOptions [opts] JSON object to merge with compiler options + -F, --fast Run TypeScript compilation in transpile mode + --ignore [regexp], --no-ignore Set the ignore check (default: \`/node_modules/\`) + --no-cache Disable the TypeScript cache + --cache-directory Configure the TypeScript cache directory +`) + + process.exit(exitCode) +} + +/** + * Interface representing the arguments that can be fed to ts-node + */ +export interface ITSNodeArgs { + eval?: string + print?: string + typeCheck?: boolean + cache?: boolean + cacheDirectory?: string + version?: boolean + help?: boolean + compiler?: string + project?: string + require?: string | string[] + ignore?: boolean | string | string[] + ignoreWarnings?: string | string[] + compilerOptions?: any + _: string[] +} + +/** + * Configuration used by minimist to extract ts-node flags + */ +const MINIMIST_CONFIGURATION = { + string: ['eval', 'print', 'compiler', 'project', 'ignoreWarnings', 'require', 'cacheDirectory', 'ignore'], + boolean: ['help', 'typeCheck', 'version', 'cache'], + alias: { + help: ['h'], + version: ['v'], + eval: ['e'], + print: ['p'], + project: ['P'], + compiler: ['C'], + require: ['r'], + typeCheck: ['type-check'], + cacheDirectory: ['cache-directory'], + ignoreWarnings: ['I', 'ignore-warnings'], + compilerOptions: ['O', 'compiler-options'] + }, + default: { + cache: null, + typeCheck: null + } +} + +/** + * Strip node flags from the current list of arguments + * + * @param v8flags V8 flags to strip + * @param argv current list of arguments + */ +function filterNodeArgv (v8flags: string[], argv: string[]) { + let pos = 0 + + for (const arg of argv) { + const flag = arg.split('=', 1)[0] + + if (v8flags.indexOf(flag) > -1) { + argv.splice(pos, 1) + } else { + pos += 1 + } + } + + return argv +} + +/** + * Extract the list of flags that are meant + * for Node itself + * + * @param argv + */ +export async function filterNodeFlags (argv: string[]) { + return new Promise((resolve, reject) => { + v8flags((error, v8flags) => { + if (error) { + return reject(error) + } + + resolve(v8flags) + }) + }).then((v8flags) => v8flags.concat([ + 'debug', + 'inspect', + '--debug', + '--debug-brk', + '--inspect', + '--inspect-brk', + '--nolazy', + '--no-deprecation', + '--log-timer-events', + '--throw-deprecation', + '--trace-deprecation', + '--allow-natives-syntax', + '--perf-basic-prof', + '--preserve-symlinks', + '--expose-gc', + '--expose-http2', + '--trace-warnings' + ])).then((v8flags) => filterNodeArgv(v8flags, argv)) +} + +/** + * Extract and separate ts-node arguments from arguments to be passed + * to the application + * + * @param argv + */ +export function extractArgv (argv: string[]) { + // + const tsNodeArgs: ITSNodeArgs = minimist(argv, MINIMIST_CONFIGURATION) + + const scriptArgs: string[] = tsNodeArgs._ + let scriptFile: string = '' + + if (scriptArgs[0] && scriptArgs[0][0] !== '-') { + scriptFile = scriptArgs.shift() as string + if (!isAbsolute(scriptFile) && scriptFile[0] !== '.') { + scriptFile = '.' + sep + scriptFile + } + } + + if (tsNodeArgs.help) { + return printHelpAndExit() + } + + return { + tsNodeArgs, + scriptFile, + scriptArgs + } +} diff --git a/src/bin.ts b/src/bin.ts index 9e6ea3ba3..6737693e7 100644 --- a/src/bin.ts +++ b/src/bin.ts @@ -1,84 +1,30 @@ #!/usr/bin/env node -import { spawn } from 'child_process' -import { join } from 'path' -import v8flags = require('v8flags') +import { extractArgv, filterNodeFlags } from './args' +import { execute } from './_bin' +import chalk from 'chalk' -const argv = process.argv.slice(2) -const signals: NodeJS.Signals[] = ['SIGINT', 'SIGTERM', 'SIGWINCH'] - -v8flags(function (err, v8flags) { - if (err) { - console.error(err.stack) - process.exit(1) - return - } - - const nodeArgs: string[] = [] - const scriptArgs: string[] = [] +function printErrorAndExit (error: Error) { + let text = chalk.red.bold('тип ') + text += chalk.bold(`Uncaught exception: ${error.message}\n`) - const knownFlags = v8flags.concat([ - 'debug', - 'inspect', - '--debug', - '--debug-brk', - '--inspect', - '--inspect-brk', - '--nolazy', - '--no-deprecation', - '--log-timer-events', - '--throw-deprecation', - '--trace-deprecation', - '--allow-natives-syntax', - '--perf-basic-prof', - '--preserve-symlinks', - '--expose-gc', - '--expose-http2', - '--trace-warnings' - ]) + const stack = error.stack ? error.stack.split('\n') : [] - for (let i = 0; i < argv.length; i++) { - const arg = argv[i] - const flag = arg.split('=', 1)[0] - - if (knownFlags.indexOf(flag) > -1) { - nodeArgs.push(arg) - } else if (/^-/.test(flag)) { - scriptArgs.push(arg) - } else { - // Break when we encounter a "script". - scriptArgs.push(...argv.slice(i)) - break - } + if (stack[0] === error.message) { + stack.shift() } - const proc = spawn( - process.execPath, - nodeArgs.concat(join(__dirname, '_bin.js'), scriptArgs), - { - // We need to run in detached mode so to avoid - // automatic propagation of signals to the child process. - // This is necessary because by default, keyboard interrupts - // are propagated to the process tree, but `kill` is not. - // - // See: https://nodejs.org/api/child_process.html#child_process_options_detached - detached: true, - stdio: 'inherit' - } - ) + for (const line of stack) { + text += chalk.gray(line) + '\n' + } - // Ignore signals, and instead forward them to the child process. - signals.forEach(signal => process.on(signal, () => proc.kill(signal))) + console.error(text) + process.exit(1) +} - // On spawned close, exit this process with the same code. - proc.on('close', (code: number, signal: string) => { - if (signal) { - process.kill(process.pid, signal) - } else { - process.exit(code) - } - }) +const argv = process.argv.slice(2) - // If this process exits, kill the child first. - process.on('exit', () => proc.kill()) -}) +filterNodeFlags(argv) + .then(extractArgv) + .then(execute) + .catch(printErrorAndExit) diff --git a/src/index.spec.ts b/src/index.spec.ts index 567e84dc0..6f6914633 100644 --- a/src/index.spec.ts +++ b/src/index.spec.ts @@ -1,5 +1,5 @@ import { expect } from 'chai' -import { exec, spawn } from 'child_process' +import { exec } from 'child_process' import { join } from 'path' import semver = require('semver') import ts = require('typescript') @@ -22,41 +22,6 @@ describe('ts-node', function () { describe('cli', function () { this.slow(1000) - it('should forward signals to the child process', function (done) { - this.slow(5000) - - // We use `spawn` instead because apparently TravisCI - // does not let subprocesses be killed when ran under `sh` - // - // See: https://github.com/travis-ci/travis-ci/issues/704#issuecomment-328278149 - const proc = spawn('node', [ - EXEC_PATH, - '--project', - testDir, - 'tests/signals' - ], { - shell: '/bin/bash' - }) - - let stdout = '' - proc.stdout.on('data', (data) => stdout += data.toString()) - - let stderr = '' - proc.stderr.on('data', (data) => stderr += data.toString()) - - proc.on('exit', function (code) { - expect(stderr).to.equal('') - expect(stdout).to.equal('exited fine') - expect(code).to.equal(0) - - return done() - }) - - // Leave enough time for node to fully start - // the process, then send a signal - setTimeout(() => proc.kill('SIGINT'), 2000) - }) - it('should execute cli', function (done) { exec(`${BIN_EXEC} tests/hello-world`, function (err, stdout) { expect(err).to.equal(null) @@ -180,12 +145,8 @@ describe('ts-node', function () { return done('Command was expected to fail, but it succeeded.') } - expect(err.message).to.contain([ - `${join(__dirname, '../tests/throw.ts')}:3`, - ' bar () { throw new Error(\'this is a demo\') }', - ' ^', - 'Error: this is a demo' - ].join('\n')) + expect(err.message).to.contain(`${join(__dirname, '../tests/throw.ts')}:3`) + expect(err.message).to.contain(`Error: this is a demo`) return done() }) diff --git a/tests/signals.ts b/tests/signals.ts deleted file mode 100644 index 0a0ebc6e7..000000000 --- a/tests/signals.ts +++ /dev/null @@ -1,12 +0,0 @@ -process.on('SIGINT', () => { - process.stdout.write('exited') - setTimeout(() => { - process.stdout.write(' fine') - - // Needed to make sure what we wrote has time - // to be written - process.nextTick(() => process.exit()) - }, 500) -}) - -setInterval(() => console.log('should not be reached'), 3000)