From acb7917efdcb1222c578686673ea965f34f6b9f0 Mon Sep 17 00:00:00 2001
From: "Kent C. Dodds" <kent+github@doddsfamily.us>
Date: Thu, 9 Feb 2017 11:37:12 -0700
Subject: [PATCH] fix(parallel): remove `--parallel` in favor of `concurrently`
 (#94)

**What**: This removes the `--parallel` capabities from `p-s` in favor
of encouraging the use of the `concurrently` module.

**Why**: DOTADIW. We want `p-s` to stay as small and focused as possible

**How**: Refactoring and documenting

BREAKING CHANGE: you must now use `concurrently` to have scripts run in parallel. Check the docs for an example of how to do this.
---
 README.md                               |  45 +++-------
 cli-test/__snapshots__/cli.test.js.snap |  25 +++---
 other/EXAMPLES.md                       |  45 +++++++++-
 package-scripts.js                      |   9 +-
 package.json                            |   3 +-
 src/bin-utils/index.js                  |  28 +++----
 src/bin-utils/index.test.js             |  36 ++++----
 src/bin/nps.js                          |  16 ++--
 src/index.js                            |  67 +++------------
 src/index.test.js                       | 105 ++++--------------------
 yarn.lock                               |  75 ++++++++++++++++-
 11 files changed, 207 insertions(+), 247 deletions(-)

diff --git a/README.md b/README.md
index 7306ad8..489d3db 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@ module.exports = {
     default: 'node index.js',
     lint: 'eslint .',
     test: {
-      // learn more about Jest here: https://kcd.im/egghead-jest
+      // learn more about Jest here: https://facebook.github.io/jest
       default: 'jest',
       watch: {
         script: 'jest --watch',
@@ -52,10 +52,12 @@ module.exports = {
       }
     },
     build: {
+      // learn more about Webpack here: https://webpack.js.org/
       default: 'webpack',
       prod: 'webpack -p',
     },
-    validate: 'nps --parallel lint,test,build',
+    // learn more about concurrently here: https://npm.im/concurrently
+    validate: 'concurrently "nps lint" "nps test" "nps build"',
   },
 }
 ```
@@ -75,7 +77,7 @@ scripts:
     build:
         default: webpack
         prod: webpack -p
-    validate: nps --parallel lint,test,build
+    validate: concurrently "nps lint" "nps test" "nps build"
 ```
 
 To use `p-s`, it's recommended that you either install it globally (`npm i -g p-s`) or add `./node_modules/bin` to your
@@ -84,7 +86,7 @@ To use `p-s`, it's recommended that you either install it globally (`npm i -g p-
 Then you can run:
 
 ```console
-p-s --help
+nps --help
 ```
 
 Which will output:
@@ -97,7 +99,6 @@ Which will output:
     -h, --help                                  output usage information
     -V, --version                               output the version number
     -s, --silent                                Silent nps output
-    -p, --parallel <script-name1,script-name2>  Scripts to run in parallel (comma seprated)
     -c, --config <filepath>                     Config file to use (defaults to nearest package-scripts.yml or package-scripts.js)
     -l, --log-level <level>                     The log level to use (error, warn, info [default])
     -r, --require <module>                      Module to preload
@@ -109,7 +110,7 @@ test - jest
 test.watch - run in the amazingly intelligent Jest watch mode - jest --watch
 build - webpack
 build.prod - webpack -p
-validate - nps --parallel lint,test,build
+validate - concurrently "nps lint" "nps test" "nps build"
 ```
 
 **Because `p-s` is harder to type, it is recommended that you use the alias `nps` to interact with `p-s`, which is much
@@ -243,14 +244,6 @@ config).
 By default, `nps` will log out to the console before running the command. You can add `-s` to your command to silence
 this.
 
-##### -p, --parallel
-
-Run the given scripts in parallel. This enables handy workflows like this:
-
-```console
-nps -p lint,build,cover && nps check-coverage && nps report-coverage
-```
-
 ##### -c, --config
 
 Use a different config
@@ -283,7 +276,7 @@ nps lint --fix # --fix will be passed on to the lint script
 
 ##### scripts
 
-If you don't use `-p` (because you don't need parallelism) then you can simply provide the name of the script like so:
+To run a script, you simply provide the name of the script like so:
 
 ```console
 nps cover
@@ -377,6 +370,10 @@ Log levels available:
 
 ## FAQ
 
+### How do I do ___ ?
+
+Have you looked at the examples in [other/EXAMPLES.md][examples]?
+
 ### Why `npm start`?
 
 _Just to be clear:_ You do **not** have to use the `start` script. You can use whatever you like. But I recommend using
@@ -404,24 +401,6 @@ This was inspired by [a tweet][tweet] by [@sindresorhus][sindre].
 a line for every script (one of the pains I'm trying to solve) and a each script requires its own file (one of the
 benefits of npm scripts I wanted to keep).
 
-## In the wild
-
-- [react-component-template](https://github.com/nkbt/react-component-template) uses `p-s` to implement shareable npm
-scripts. See then how dependent [react-swap](https://github.com/nkbt/react-swap) can reuse them.
-
-GOTCHAS:
-  - use `process.cwd()` as the base for all paths
-
-- [Hypercubed/EventsSpeedTests](https://github.com/Hypercubed/EventsSpeedTests) uses `p-s` to automate benchmark running
-and reporting in node and the browser.  `package-scripts.js` enables us to keep our scripts DRY.  Combined with
-[grunion](https://github.com/Hypercubed/grunion) allows benchmarks to be run, serially or concurrently, on glob
-patterns.
-
-- [SmithersAssistant/Smithers](https://github.com/SmithersAssistant/smithers) is an [electron](https://electron.atom.io)
-based personal assistant. Smithers works on multiple platforms. Smithers uses `p-s` to dynamically find the current
-platform and execute the dev environment. Now we don't have to manually update the `package.json` scripts when you are
-on a different platform!
-
 ## Contributors
 
 Thanks goes to these people ([emoji key][emojis]):
diff --git a/cli-test/__snapshots__/cli.test.js.snap b/cli-test/__snapshots__/cli.test.js.snap
index 8146090..50a6fa8 100644
--- a/cli-test/__snapshots__/cli.test.js.snap
+++ b/cli-test/__snapshots__/cli.test.js.snap
@@ -1,7 +1,7 @@
 exports[`test with --require 1`] = `
 Object {
   "stderr": "",
-  "stdout": "nps executing: echo \"log\"
+  "stdout": "nps executing: echo \"log\"
 log
 ",
 }
@@ -17,7 +17,7 @@ Object {
 
 exports[`test with a missing config 1`] = `
 Object {
-  "stderr": "Unable to find JS config at \"./something-that-does-not-exist.js\". Attempted to require as \"<projectRootDir>/cli-test/fixtures/something-that-does-not-exist.js\" https://github.com/kentcdodds/p-s/blob/v0.0.0-semantically-released/other/ERRORS_AND_WARNINGS.md#unable-to-find-config
+  "stderr": "Unable to find JS config at \"./something-that-does-not-exist.js\". Attempted to require as \"<projectRootDir>/cli-test/fixtures/something-that-does-not-exist.js\" https://github.com/kentcdodds/p-s/blob/v0.0.0-semantically-released/other/ERRORS_AND_WARNINGS.md#unable-to-find-config
 ",
   "stdout": "",
 }
@@ -26,7 +26,7 @@ Object {
 exports[`test with config with default script 1`] = `
 Object {
   "stderr": "",
-  "stdout": "nps executing: echo \"default script\"
+  "stdout": "nps executing: echo \"default script\"
 default script
 ",
 }
@@ -40,19 +40,18 @@ Object {
 
   Options:
 
-    -h, --help                                  output usage information
-    -V, --version                               output the version number
-    -s, --silent                                Silent nps output
-    -p, --parallel <script-name1,script-name2>  Scripts to run in parallel (comma seprated)
-    -c, --config <filepath>                     Config file to use (defaults to nearest package-scripts.yml or package-scripts.js)
-    -l, --log-level <level>                     The log level to use (error, warn, info [default])
-    -r, --require <module>                      Module to preload
+    -h, --help               output usage information
+    -V, --version            output the version number
+    -s, --silent             Silent nps output
+    -c, --config <filepath>  Config file to use (defaults to nearest package-scripts.yml or package-scripts.js)
+    -l, --log-level <level>  The log level to use (error, warn, info [default])
+    -r, --require <module>   Module to preload
 
 Available scripts (camel or kebab case accepted)
 
-test - echo \"test script\"
-lint - echo \"lint.default\"
-lint.sub.thing - this is a description - echo \"deeply nested thing\"
+test - echo \"test script\"
+lint - echo \"lint.default\"
+lint.sub.thing - this is a description - echo \"deeply nested thing\"
 ",
 }
 `;
diff --git a/other/EXAMPLES.md b/other/EXAMPLES.md
index b424079..5f61232 100644
--- a/other/EXAMPLES.md
+++ b/other/EXAMPLES.md
@@ -1,11 +1,23 @@
 # package-scripts examples
 
 ## Links to projects
+
 Examples of how people us `p-s`:
 
 - **[p-s](https://github.com/kentcdodds/p-s):** [scripts](https://github.com/kentcdodds/p-s/blob/7a00d750611f08e8a95f24e78dd1cdc0a2213e51/package.json#L6-L10), [`package-scripts.js`](https://github.com/kentcdodds/p-s/blob/7a00d750611f08e8a95f24e78dd1cdc0a2213e51/package-scripts.js)
-- **[Smithers](https://github.com/SmithersAssistant/smithers):**
-  [scripts](https://github.com/SmithersAssistant/smithers/blob/0732fed616d64ff4696110574e51c300cd409d4c/package.json#L67-L70), [`package-scripts.js`](https://github.com/SmithersAssistant/smithers/blob/0732fed616d64ff4696110574e51c300cd409d4c/package-scripts.js)
+- **[react-component-template](https://github.com/nkbt/react-component-template)** uses `p-s` to implement shareable npm
+scripts. See then how dependent [react-swap](https://github.com/nkbt/react-swap) can reuse them. (Gotcha: - use
+`process.cwd()` as the base for all paths).
+- **[Hypercubed/EventsSpeedTests](https://github.com/Hypercubed/EventsSpeedTests)** uses `p-s` to automate benchmark
+running and reporting in node and the browser. `package-scripts.js` enables us to keep our scripts DRY. Combined with
+[grunion](https://github.com/Hypercubed/grunion) allows benchmarks to be run, serially or concurrently, on glob
+patterns.
+- **[SmithersAssistant/Smithers](https://github.com/SmithersAssistant/smithers)** is an
+[electron](https://electron.atom.io) based personal assistant. Smithers works on multiple platforms. Smithers uses `p-s`
+to dynamically find the current platform and execute the dev environment. Now we don't have to manually update the
+`package.json` scripts when you are on a different platform!
+[scripts](https://github.com/SmithersAssistant/smithers/blob/0732fed616d64ff4696110574e51c300cd409d4c/package.json#L67-L70),
+[`package-scripts.js`](https://github.com/SmithersAssistant/smithers/blob/0732fed616d64ff4696110574e51c300cd409d4c/package-scripts.js)
 
 ## Inline Examples
 
@@ -16,6 +28,9 @@ can't determine the platform in the `package.json`, you have to either have to d
 `build:windows` and `build:unix` script), find CLIs that are cross platform (like
 [`cross-env`](http://npm.im/cross-env)), or write your logic in a separate file to handle the platform.
 
+You can also use [`cross-var`](http://npm.im/cross-var) in basically the same way to do the same for using environment
+variables in your scripts so it works on both windows and mac/linux
+
 With `package-scripts`, you can really easily have a single script that uses the platform to determine what should be
 run. For example:
 
@@ -35,6 +50,32 @@ module.exports = {
 Note, in this specific scenario, I'd recommend that you actually use [`rimraf`](http://npm.im/rimraf), but I think you
 get the idea 😄. This is a pretty nice win over traditional npm scripts 👍
 
+### parallel scripts
+
+Often, scripts can run concurrently because they are not interdependent. We recommend
+[`concurrently`](http://npm.im/concurrently) for this:
+
+```javascript
+module.exports = {
+  scripts: {
+    validate: concurrent([
+      'build',
+      'lint',
+      'test',
+      'order.sandwich',
+    ]),
+    // etc...
+  }
+}
+
+function concurrent(scripts) {
+  process.env.FORCE_COLOR = true // this is necessary until https://github.com/kimmobrunfeldt/concurrently/issues/86
+  const names = scripts.join(',')
+  const quotedScripts = `"nps ${scripts.join('" "nps ')}"`
+  return `concurrently --prefix "[{name}]" --names "${names}" ${quotedScripts}`
+}
+```
+
 ## Instructions
 
 Thanks for using `p-s`! I'm glad/I hope it's been helpful to you. Please add a link to your example here. If you're
diff --git a/package-scripts.js b/package-scripts.js
index a254a32..c02a7f3 100644
--- a/package-scripts.js
+++ b/package-scripts.js
@@ -43,7 +43,7 @@ module.exports = {
     },
     validate: {
       description: 'This runs several scripts to make sure things look good before committing or on clean install',
-      script: `nps -p ${validate.join(',')}`,
+      script: concurrent(validate),
     },
     addContributor: {
       description: 'When new people contribute to the project, run this',
@@ -58,3 +58,10 @@ module.exports = {
     silent: false,
   },
 }
+
+function concurrent(scripts) {
+  process.env.FORCE_COLOR = true // this is required until https://github.com/kimmobrunfeldt/concurrently/issues/86
+  const names = scripts.join(',')
+  const quotedScripts = `"nps ${scripts.join('" "nps ')}"`
+  return `concurrently --prefix "[{name}]" --names "${names}" ${quotedScripts}`
+}
diff --git a/package.json b/package.json
index 6613722..f709ee1 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
   "dependencies": {
     "arrify": "^1.0.1",
     "bluebird": "^3.4.7",
-    "colors": "^1.1.2",
+    "chalk": "^1.1.3",
     "commander": "^2.9.0",
     "find-up": "^2.1.0",
     "js-yaml": "^3.7.0",
@@ -56,6 +56,7 @@
     "husky": "^0.13.1",
     "jest-cli": "^18.1.0",
     "opt-cli": "^1.5.1",
+    "concurrently": "^3.1.0",
     "p-s": "*",
     "rimraf": "^2.5.4",
     "semantic-release": "^6.3.6",
diff --git a/src/bin-utils/index.js b/src/bin-utils/index.js
index 72a1301..b97df1d 100644
--- a/src/bin-utils/index.js
+++ b/src/bin-utils/index.js
@@ -3,7 +3,7 @@ import {readFileSync} from 'fs'
 import {remove, includes, isPlainObject, isUndefined, isEmpty, isFunction} from 'lodash'
 import typeOf from 'type-detect'
 import shellEscape from 'shell-escape'
-import colors from 'colors/safe'
+import chalk from 'chalk'
 import {safeLoad} from 'js-yaml'
 
 import getLogger from '../get-logger'
@@ -20,7 +20,7 @@ const log = getLogger()
  */
 const preloadModule = getAttemptModuleRequireFn((moduleName, requirePath) => {
   log.warn({
-    message: colors.yellow(`Unable to preload "${moduleName}". Attempted to require as "${requirePath}"`),
+    message: chalk.yellow(`Unable to preload "${moduleName}". Attempted to require as "${requirePath}"`),
     ref: 'unable-to-preload-module',
   })
   return undefined
@@ -28,7 +28,7 @@ const preloadModule = getAttemptModuleRequireFn((moduleName, requirePath) => {
 
 const loadJSConfig = getAttemptModuleRequireFn(function onFail(configPath, requirePath) {
   log.error({
-    message: colors.red(`Unable to find JS config at "${configPath}". Attempted to require as "${requirePath}"`),
+    message: chalk.red(`Unable to find JS config at "${configPath}". Attempted to require as "${requirePath}"`),
     ref: 'unable-to-find-config',
   })
   return undefined
@@ -59,7 +59,7 @@ function loadConfig(configPath, input) {
   }
   if (!isPlainObject(config)) {
     log.error({
-      message: colors.red(
+      message: chalk.red(
         `The package-scripts configuration ("${configPath}") ` +
         'must be an object or a function that returns an object.',
       ),
@@ -86,7 +86,7 @@ function loadYAMLConfig(configPath) {
       throw e
     }
     log.error({
-      message: colors.red(`Unable to find YML config at "${configPath}".`),
+      message: chalk.red(`Unable to find YML config at "${configPath}".`),
       ref: 'unable-to-find-config',
     })
     return undefined
@@ -97,22 +97,18 @@ function getScriptsAndArgs(program) {
   let scripts = []
   let args = ''
   const {rawArgs} = program
-  const parallel = !isEmpty(program.parallel)
-  if (parallel) {
-    scripts = program.parallel.split(',')
-    args = getArgs(program.args, program.rawArgs, scripts)
-  } else if (!isEmpty(program.args)) {
+  if (!isEmpty(program.args)) {
     const [scriptsString] = program.args
     scripts = scriptsString.split(',')
     remove(rawArgs, arg => arg === scriptsString)
     args = getArgs(program.args.slice(1), rawArgs, scripts)
   }
-  return {scripts, args, parallel}
+  return {scripts, args}
 }
 
 function getArgs(args, rawArgs, scripts) {
   const allArgs = rawArgs.slice(2)
-  const psArgs = ['-p', '--parallel', '-c', '--config', '-r', '--require']
+  const psArgs = ['-c', '--config', '-r', '--require']
   const psFlags = ['-s', '--silent']
   const cleanedArgs = remove(allArgs, (item, index, array) => {
     const isArgOrFlag = includes(psArgs, item) || includes(psFlags, item)
@@ -165,11 +161,11 @@ function help({scripts}) {
   const availableScripts = getAvailableScripts(scripts)
   const filteredScripts = availableScripts.filter(script => !script.hiddenFromHelp)
   const scriptLines = filteredScripts.map(({name, description, script}) => {
-    const coloredName = colors.green(name)
-    const coloredScript = colors.gray(script)
+    const coloredName = chalk.green(name)
+    const coloredScript = chalk.gray(script)
     let line
     if (description) {
-      line = [coloredName, colors.white(description), coloredScript]
+      line = [coloredName, chalk.white(description), coloredScript]
     } else {
       line = [coloredName, coloredScript]
     }
@@ -180,7 +176,7 @@ function help({scripts}) {
     const message = `${topMessage}\n\n${scriptLines.join('\n')}`
     return message
   } else {
-    return colors.yellow('There are no scripts available')
+    return chalk.yellow('There are no scripts available')
   }
 }
 
diff --git a/src/bin-utils/index.test.js b/src/bin-utils/index.test.js
index eef8af4..223f159 100644
--- a/src/bin-utils/index.test.js
+++ b/src/bin-utils/index.test.js
@@ -1,6 +1,6 @@
 /* eslint import/newline-after-import:0, global-require:0 */
 import path from 'path'
-import colors from 'colors/safe'
+import chalk from 'chalk'
 import {spy} from 'sinon'
 import {getScriptsAndArgs, help, preloadModule, loadConfig} from './index'
 
@@ -21,14 +21,6 @@ test('getScriptsAndArgs: gets scripts in series', () => {
   expect(args).toEqual('')
 })
 
-test('getScriptsAndArgs: gets parallel scripts', () => {
-  const {scripts} = getScriptsAndArgs({
-    parallel: 'boo,baz',
-    rawArgs: ['node', 'p-s', '-p', 'boo,baz'],
-  })
-  expect(scripts).toEqual(['boo', 'baz'])
-})
-
 test('getScriptsAndArgs: passes args to scripts', () => {
   const {args, scripts} = getScriptsAndArgs({
     args: ['boo'],
@@ -38,7 +30,7 @@ test('getScriptsAndArgs: passes args to scripts', () => {
   expect(args).toBe('--watch --verbose')
 })
 
-test('getScriptsAndArgs: returns empty scripts and args if not parallel and no args', () => {
+test('getScriptsAndArgs: returns empty scripts and args if no args', () => {
   const {args, scripts} = getScriptsAndArgs({
     args: [],
     rawArgs: ['node', 'p-s'],
@@ -62,8 +54,8 @@ test('preloadModule: resolves an absolute path', () => {
 })
 
 test('preloadModule: resolves a node_module', () => {
-  const val = preloadModule('colors/safe')
-  expect(val).toBe(colors)
+  const val = preloadModule('chalk')
+  expect(val).toBe(chalk)
 })
 
 test('preloadModule: logs a warning when the module cannot be required', () => {
@@ -221,14 +213,14 @@ test('help: formats a nice message', () => {
   const expected = `
 Available scripts (camel or kebab case accepted)
 
-${colors.green('foo')} - ${colors.white('the foo script')} - ${colors.gray('echo "foo"')}
-${colors.green('bar')} - ${colors.white('stuff')} - ${colors.gray('echo "bar default"')}
-${colors.green('bar.baz')} - ${colors.gray('echo "baz"')}
-${colors.green('bar.barBub')} - ${colors.gray('echo "barBub"')}
-${colors.green('build')} - ${colors.gray('webpack')}
-${colors.green('build.x')} - ${colors.white('webpack with x env')} - ${colors.gray('webpack --env.x')}
-${colors.green('build.x.y')} - ${colors.white('build X-Y')} - ${colors.gray('echo "build x-y"')}
-${colors.green('foobar')} - ${colors.gray('echo "foobar"')}
+${chalk.green('foo')} - ${chalk.white('the foo script')} - ${chalk.gray('echo "foo"')}
+${chalk.green('bar')} - ${chalk.white('stuff')} - ${chalk.gray('echo "bar default"')}
+${chalk.green('bar.baz')} - ${chalk.gray('echo "baz"')}
+${chalk.green('bar.barBub')} - ${chalk.gray('echo "barBub"')}
+${chalk.green('build')} - ${chalk.gray('webpack')}
+${chalk.green('build.x')} - ${chalk.white('webpack with x env')} - ${chalk.gray('webpack --env.x')}
+${chalk.green('build.x.y')} - ${chalk.white('build X-Y')} - ${chalk.gray('echo "build x-y"')}
+${chalk.green('foobar')} - ${chalk.gray('echo "foobar"')}
 `.trim()
 
   expect(message).toBe(expected)
@@ -237,7 +229,7 @@ ${colors.green('foobar')} - ${colors.gray('echo "foobar"')}
 test('help: returns no scripts available', () => {
   const config = {scripts: {}}
   const message = help(config)
-  const expected = colors.yellow('There are no scripts available')
+  const expected = chalk.yellow('There are no scripts available')
   expect(message).toBe(expected)
 })
 
@@ -252,7 +244,7 @@ test('help: do not display scripts with flag hiddenFromHelp set to true', () =>
     },
   }
   const message = help(config)
-  const expected = colors.yellow('There are no scripts available')
+  const expected = chalk.yellow('There are no scripts available')
   expect(message).toBe(expected)
 })
 
diff --git a/src/bin/nps.js b/src/bin/nps.js
index 4cd1680..9976da2 100644
--- a/src/bin/nps.js
+++ b/src/bin/nps.js
@@ -3,7 +3,7 @@
 import findUp from 'find-up'
 import {merge, includes, indexOf} from 'lodash'
 import program from 'commander'
-import colors from 'colors/safe'
+import chalk from 'chalk'
 import {keyInYN} from 'readline-sync'
 import runPackageScript from '../index'
 import {
@@ -23,7 +23,6 @@ program
   .version(version)
   .allowUnknownOption()
   .option('-s, --silent', 'Silent nps output')
-  .option('-p, --parallel <script-name1,script-name2>', 'Scripts to run in parallel (comma seprated)')
   .option('-c, --config <filepath>', 'Config file to use (defaults to nearest package-scripts.yml or package-scripts.js)')
   .option('-l, --log-level <level>', 'The log level to use (error, warn, info [default])')
   .option('-r, --require <module>', 'Module to preload')
@@ -58,7 +57,6 @@ function loadAndRun(psConfig) {
     args: scriptsAndArgs.args,
     options: merge(psConfig.options, {
       silent: program.silent,
-      parallel: scriptsAndArgs.parallel,
       logLevel: program.logLevel,
     }),
   }).catch(error => {
@@ -73,7 +71,7 @@ function getPSConfig() {
   }
   const configFilepath = getPSConfigFilepath()
   if (!configFilepath) {
-    log.warn(colors.yellow('Unable to find a config file and none was specified.'))
+    log.warn(chalk.yellow('Unable to find a config file and none was specified.'))
     return {scripts: {}} // empty config
   }
   const config = loadConfig(configFilepath, scriptsAndArgs)
@@ -89,18 +87,18 @@ function getPSConfigFilepath() {
 
 function onInit() {
   if (getPSConfigFilepath()) {
-    if (!keyInYN(colors.yellow(`Do you want to overwrite your existing config file?`))) {
+    if (!keyInYN(chalk.yellow(`Do you want to overwrite your existing config file?`))) {
       process.exit(FAIL_CODE)
     }
   }
   shouldRun = false
   const {packageScriptsPath} = initialize(getConfigType())
-  log.info(`Your scripts have been saved at ${colors.green(packageScriptsPath)}`)
-  log.info(colors.gray(
+  log.info(`Your scripts have been saved at ${chalk.green(packageScriptsPath)}`)
+  log.info(chalk.gray(
     'Check out your scripts in there. Go ahead and update them and add descriptions to the ones that need it',
   ))
-  log.info(colors.gray('Your package.json scripts have also been updated. Run `npm start help` for help'))
-  log.info(colors.gray(
+  log.info(chalk.gray('Your package.json scripts have also been updated. Run `npm start help` for help'))
+  log.info(chalk.gray(
     'You may also want to install the package globally and installing autocomplete script. You can do so by running\n' +
     '  npm install --global p-s\n' +
     '  nps completion <optionally-your-bash-profile-file>\n' +
diff --git a/src/index.js b/src/index.js
index db9bce3..ae2a0d3 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,6 +1,6 @@
 import spawn from 'spawn-command-with-kill'
 import Promise from 'bluebird'
-import colors from 'colors/safe'
+import chalk from 'chalk'
 import {isString, clone} from 'lodash'
 import {sync as findUpSync} from 'find-up'
 import managePath from 'manage-path'
@@ -18,50 +18,12 @@ function runPackageScripts({scriptConfig, scripts, args, options = {}}) {
     scripts = ['default']
   }
   const scriptNames = arrify(scripts)
-  if (options.parallel) {
-    return runParallel()
-  } else {
-    return runSeries()
-  }
-
-  function runSeries() {
-    return scriptNames.reduce((res, scriptName) => {
-      return res.then(() => (
-        runPackageScript({scriptConfig, options, scriptName, args})
-      ))
-    }, Promise.resolve())
-  }
-
-  function runParallel() {
-    const results = scriptNames.map(script => ({script, code: undefined}))
-    let aborted = false
-
-    const promises = scriptNames.map(scriptName => {
-      return runPackageScript({scriptConfig, options, scriptName, args})
-    })
-
-    const allPromise = Promise.all(promises.map((promise, index) => {
-      return promise.then(code => {
-        results[index].code = code
-      })
-    })).then(() => results)
 
-    allPromise.catch(() => {
-      /* istanbul ignore if */
-      if (aborted) {
-        // this is very unlikely to happen
-      } else {
-        abortAll()
-      }
-    })
-
-    return allPromise
-
-    function abortAll() {
-      aborted = true
-      promises.forEach(p => p.abort())
-    }
-  }
+  return scriptNames.reduce((res, scriptName) => {
+    return res.then(() => (
+      runPackageScript({scriptConfig, options, scriptName, args})
+    ))
+  }, Promise.resolve())
 }
 
 
@@ -70,7 +32,7 @@ function runPackageScript({scriptConfig, options, scriptName, args}) {
   const script = getScriptToRun(scripts, scriptName)
   if (!isString(script)) {
     return Promise.reject({
-      message: colors.red(
+      message: chalk.red(
         `Scripts must resolve to strings. There is no script that can be resolved from "${scriptName}"`,
       ),
       ref: 'missing-script',
@@ -78,15 +40,14 @@ function runPackageScript({scriptConfig, options, scriptName, args}) {
   }
   const command = [script, args].join(' ').trim()
   const log = getLogger(getLogLevel(options))
-  log.info(colors.gray('nps executing: ') + colors.green(command))
+  log.info(chalk.gray('nps executing: ') + chalk.green(command))
   let child
   const promise = new Promise((resolve, reject) => {
     child = spawn(command, {stdio: 'inherit', env: getEnv()})
 
     child.on('error', error => {
-      child = null
       reject({
-        message: colors.red(
+        message: chalk.red(
           `The script called "${scriptName}" which runs "${command}" emitted an error`,
         ),
         ref: 'emitted-an-error',
@@ -95,12 +56,11 @@ function runPackageScript({scriptConfig, options, scriptName, args}) {
     })
 
     child.on('close', code => {
-      child = null
       if (code === NON_ERROR) {
         resolve(code)
       } else {
         reject({
-          message: colors.red(
+          message: chalk.red(
             `The script called "${scriptName}" which runs "${command}" failed with exit code ${code}`,
           ),
           ref: 'failed-with-exit-code',
@@ -110,13 +70,6 @@ function runPackageScript({scriptConfig, options, scriptName, args}) {
     })
   })
 
-  promise.abort = function abort() {
-    if (child !== null) {
-      child.kill()
-      child = null
-    }
-  }
-
   return promise
 }
 
diff --git a/src/index.test.js b/src/index.test.js
index a3cbf6c..a57cdf1 100644
--- a/src/index.test.js
+++ b/src/index.test.js
@@ -2,7 +2,7 @@
 import {resolve} from 'path'
 import Promise from 'bluebird'
 import {spy} from 'sinon'
-import color from 'colors/safe'
+import chalk from 'chalk'
 import managePath from 'manage-path'
 
 test('spawn called with the parent process.env + npm path', () => {
@@ -39,7 +39,7 @@ test('returns a log object when no script is found', () => {
   const scriptConfig = {lint: {script: 42}}
   return runPackageScript({scriptConfig, scripts: ['lint']}).catch(error => {
     expect(error).toEqual({
-      message: color.red('Scripts must resolve to strings. There is no script that can be resolved from "lint"'),
+      message: chalk.red('Scripts must resolve to strings. There is no script that can be resolved from "lint"'),
       ref: 'missing-script',
     })
   })
@@ -69,7 +69,7 @@ test('passes on additional arguments', () => {
   })
 })
 
-test('runs scripts serially if given an array of input without parallel', () => {
+test('runs scripts serially if given an array of input', () => {
   const lintCommand = 'eslint'
   const buildCommand = 'babel'
   const args = 'src/ scripts/'
@@ -126,116 +126,43 @@ test('stops running scripts when running serially if any given script fails', ()
   })
 })
 
-test('runs scripts in parallel if given an array of input', () => {
-  const lintCommand = 'eslint'
-  const buildCommand = 'babel'
-  const args = 'src/ scripts/'
-  const {runPackageScript, mockSpawnStubSpy} = setup()
-  const scripts = ['lint', 'build']
-  const scriptConfig = {build: buildCommand, lint: lintCommand}
-  const options = {parallel: true}
-  return runPackageScript({scriptConfig, scripts, args, options}).then(() => {
-    expect(mockSpawnStubSpy.calledTwice)
-    const [command1] = mockSpawnStubSpy.firstCall.args
-    const [command2] = mockSpawnStubSpy.secondCall.args
-    expect(command1).toBe('eslint src/ scripts/')
-    expect(command2).toBe('babel src/ scripts/')
-  })
-})
-
 test('runs the default script if no scripts provided', () => {
   return testSpawnCall({default: 'echo foo'}, []).then(({command}) => {
     expect(command).toBe(`echo foo`)
   })
 })
 
-test('an non-zero exit code from a script will abort other scripts that are still running', () => {
-  const FAIL_CODE = 1
-  const goodCommand = 'goodButLong'
+test('an error from the child process logs an error', () => {
+  const ERROR = {message: 'there was an error', code: 2}
   const badCommand = 'bad'
-  const longCommand = 'long'
-  const scripts = ['goodS', 'badS', 'longS']
-  const scriptConfig = {
-    goodS: goodCommand,
-    badS: badCommand,
-    longS: longCommand,
-  }
-  const killSpy = spy()
-  function spawnStub(cmd) {
-    return {
-      on(event, cb) {
-        if (event === 'close') {
-          if (cmd === longCommand) {
-            // verifies that the promise callback wont be invoked when it's been aborted
-            setTimeout(() => cb(0))
-          } else if (cmd === badCommand) {
-            cb(FAIL_CODE)
-          } else {
-            cb(0)
-          }
-        }
-      },
-      kill() {
-        killSpy(cmd)
-      },
-    }
-  }
-  const {runPackageScript} = setup(spawnStub)
-  const options = {parallel: true}
-  return runPackageScript({scriptConfig, scripts, options}).then(() => {
-    throw new Error('the promise should be rejected')
-  }, ({code, ref, message}) => {
-    expect(code).toBe(FAIL_CODE)
-    expect(typeof ref === 'string')
-    expect(typeof message === 'string')
-    expect(killSpy.calledOnce) // and only once, just for the longCommand
-    expect(killSpy.firstCall.args[0]).toBe(longCommand)
-  })
-})
-
-test('an error event from a script will abort other scripts', () => {
-  const ERROR_STRING = 'error string'
   const goodCommand = 'good'
-  const badCommand = 'bad'
-  const longCommand = 'long'
-  const scripts = ['goodS', 'badS', 'longS']
+  const scripts = ['badS', 'goodS']
   const scriptConfig = {
     goodS: goodCommand,
     badS: badCommand,
-    longS: longCommand,
   }
-  const killSpy = spy()
   function spawnStub(cmd) {
     return {
       on(event, cb) {
-        if (event === 'close') {
-          if (cmd === longCommand) {
-            // never call the callback
-            // it'll get aborted anyway.
-          } else if (cmd === badCommand) {
-            // do nothing in this case because we're going to call the error cb
-          } else {
-            cb(0)
-          }
-        } else if (event === 'error' && cmd === badCommand) {
-          cb(ERROR_STRING)
+        if (event === 'error' && cmd === badCommand) {
+          cb(ERROR)
         }
       },
       kill() {
-        killSpy(cmd)
       },
     }
   }
-  const {runPackageScript} = setup(spawnStub)
-  const options = {parallel: true}
-  return runPackageScript({scriptConfig, scripts, options}).then(() => {
+  const mockSpawnStubSpy = jest.fn(spawnStub)
+  const {runPackageScript} = setup(mockSpawnStubSpy)
+  return runPackageScript({scriptConfig, scripts}).then(() => {
     throw new Error('the promise should be rejected')
-  }, ({error, ref, message}) => {
-    expect(error).toBe(ERROR_STRING)
+  }, ({message, ref, error}) => {
+    expect(error).toBe(ERROR)
     expect(typeof ref === 'string')
     expect(typeof message === 'string')
-    expect(killSpy.calledOnce) // and only once, just for the longCommand
-    expect(killSpy.firstCall.args[0]).toBe(longCommand)
+    expect(mockSpawnStubSpy).toHaveBeenCalledTimes(1)
+    const [[command1]] = mockSpawnStubSpy.mock.calls
+    expect(command1).toBe(badCommand)
   })
 })
 
diff --git a/yarn.lock b/yarn.lock
index 68280a9..84fe92f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -107,10 +107,18 @@ ansi-escapes@^1.1.0, ansi-escapes@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-1.4.0.tgz#d3a8a83b319aa67793662b13e761c7911422306e"
 
+ansi-regex@^0.2.0, ansi-regex@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-0.2.1.tgz#0d8e946967a3d8143f93e24e298525fc1b2235f9"
+
 ansi-regex@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
 
+ansi-styles@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-1.1.0.tgz#eaecbf66cd706882760b2f4691582b8f55d7a7de"
+
 ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
@@ -924,6 +932,10 @@ block-stream@*:
   dependencies:
     inherits "~2.0.0"
 
+bluebird@2.9.6:
+  version "2.9.6"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-2.9.6.tgz#1fc3a6b1685267dc121b5ec89b32ce069d81ab7d"
+
 bluebird@3.4.7, bluebird@^3.4.1, bluebird@^3.4.6, bluebird@^3.4.7:
   version "3.4.7"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.4.7.tgz#f72d760be09b7f76d08ed8fae98b289a8d05fab3"
@@ -1107,6 +1119,16 @@ center-align@^0.1.1:
     align-text "^0.1.3"
     lazy-cache "^1.0.3"
 
+chalk@0.5.1:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-0.5.1.tgz#663b3a648b68b55d04690d49167aa837858f2174"
+  dependencies:
+    ansi-styles "^1.1.0"
+    escape-string-regexp "^1.0.0"
+    has-ansi "^0.1.0"
+    strip-ansi "^0.3.0"
+    supports-color "^0.2.0"
+
 chalk@1.1.3, chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
@@ -1214,7 +1236,7 @@ colors@1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.0.3.tgz#0433f44d809680fdeb60ed260f1b0c262e82a40b"
 
-colors@1.1.2, colors@^1.1.2:
+colors@1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.1.2.tgz#168a4701756b6a7f51a12ce0c97bfa28c084ed63"
 
@@ -1228,6 +1250,10 @@ combined-stream@^1.0.5, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
+commander@2.6.0:
+  version "2.6.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.6.0.tgz#9df7e52fb2a0cb0fb89058ee80c3104225f37e1d"
+
 commander@2.9.0, commander@^2.8.1, commander@^2.9.0:
   version "2.9.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
@@ -1270,6 +1296,19 @@ concat-stream@^1.4.6, concat-stream@^1.4.7, concat-stream@^1.5.2:
     readable-stream "^2.2.2"
     typedarray "^0.0.6"
 
+concurrently@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/concurrently/-/concurrently-3.1.0.tgz#dc5ef0459090012604756668894c04b434ef90d1"
+  dependencies:
+    bluebird "2.9.6"
+    chalk "0.5.1"
+    commander "2.6.0"
+    lodash "^4.5.1"
+    moment "^2.11.2"
+    rx "2.3.24"
+    spawn-default-shell "^1.1.0"
+    tree-kill "^1.1.0"
+
 condition-node-version@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/condition-node-version/-/condition-node-version-1.3.0.tgz#bd3284b204cf715fe21b948cde7e373a373cb717"
@@ -1673,7 +1712,7 @@ es6-weak-map@^2.0.1:
     es6-iterator "2"
     es6-symbol "3"
 
-escape-string-regexp@^1.0.2, escape-string-regexp@^1.0.5:
+escape-string-regexp@^1.0.0, escape-string-regexp@^1.0.2, escape-string-regexp@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
 
@@ -2334,6 +2373,12 @@ har-validator@~2.0.6:
     is-my-json-valid "^2.12.4"
     pinkie-promise "^2.0.0"
 
+has-ansi@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-0.1.0.tgz#84f265aae8c0e6a88a12d7022894b7568894c62e"
+  dependencies:
+    ansi-regex "^0.2.0"
+
 has-ansi@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-2.0.0.tgz#34f5049ce1ecdf2b0649af3ef24e45ed35416d91"
@@ -2643,7 +2688,7 @@ is-path-inside@^1.0.0:
 
 is-posix-bracket@^0.1.0:
   version "0.1.1"
-  resolved "http://registry.npmjs.org/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz#3334dc79774368e92f016e6fbc0a88f5cd6e6bc4"
+  resolved "https://registry.yarnpkg.com/is-posix-bracket/-/is-posix-bracket-0.1.1.tgz#3334dc79774368e92f016e6fbc0a88f5cd6e6bc4"
 
 is-primitive@^2.0.0:
   version "2.0.0"
@@ -3262,7 +3307,7 @@ lodash@4.17.2:
   version "4.17.2"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.2.tgz#34a3055babe04ce42467b607d700072c7ff6bf42"
 
-lodash@4.17.4, lodash@^4.0.0, lodash@^4.11.2, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.17.4, lodash@^4.2.0, lodash@^4.3.0:
+lodash@4.17.4, lodash@^4.0.0, lodash@^4.11.2, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.17.4, lodash@^4.2.0, lodash@^4.3.0, lodash@^4.5.1:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
@@ -3427,6 +3472,10 @@ minimist@1.2.0, minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0:
   dependencies:
     minimist "0.0.8"
 
+moment@^2.11.2:
+  version "2.17.1"
+  resolved "https://registry.yarnpkg.com/moment/-/moment-2.17.1.tgz#fed9506063f36b10f066c8b59a144d7faebe1d82"
+
 ms@0.7.1:
   version "0.7.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.1.tgz#9cd13c03adbff25b65effde7ce864ee952017098"
@@ -4348,6 +4397,10 @@ rx-lite@^3.1.2:
   version "3.1.2"
   resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-3.1.2.tgz#19ce502ca572665f3b647b10939f97fd1615f102"
 
+rx@2.3.24:
+  version "2.3.24"
+  resolved "https://registry.yarnpkg.com/rx/-/rx-2.3.24.tgz#14f950a4217d7e35daa71bbcbe58eff68ea4b2b7"
+
 rx@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/rx/-/rx-4.1.0.tgz#a5f13ff79ef3b740fe30aa803fb09f98805d4782"
@@ -4524,6 +4577,10 @@ spawn-command@^0.0.2-1:
   version "0.0.2"
   resolved "https://registry.yarnpkg.com/spawn-command/-/spawn-command-0.0.2.tgz#9544e1a43ca045f8531aac1a48cb29bdae62338e"
 
+spawn-default-shell@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/spawn-default-shell/-/spawn-default-shell-1.1.0.tgz#095439d44c4b7c0aff56a53929fbaab87878e7c6"
+
 spawn-sync@^1.0.15:
   version "1.0.15"
   resolved "https://registry.yarnpkg.com/spawn-sync/-/spawn-sync-1.0.15.tgz#b00799557eb7fb0c8376c29d44e8a1ea67e57476"
@@ -4632,6 +4689,12 @@ stringstream@~0.0.4:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/stringstream/-/stringstream-0.0.5.tgz#4e484cd4de5a0bbbee18e46307710a8a81621878"
 
+strip-ansi@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-0.3.0.tgz#25f48ea22ca79187f3174a4db8759347bb126220"
+  dependencies:
+    ansi-regex "^0.2.1"
+
 strip-ansi@^3.0.0, strip-ansi@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
@@ -4799,6 +4862,10 @@ travis-deploy-once@1.0.0-node-0.10-support:
     request-promise "^4.1.1"
     travis-ci "^2.1.1"
 
+tree-kill@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.1.0.tgz#c963dcf03722892ec59cba569e940b71954d1729"
+
 trim-newlines@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/trim-newlines/-/trim-newlines-1.0.0.tgz#5887966bb582a4503a41eb524f7d35011815a613"