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+| [index](../README.md) | npm-run-all | [run-s](run-s.md) | [run-p](run-p.md) | [Node API](node-api.md) |
+|-----------------------|-------------|-------------------|-------------------|-------------------------|
+
+# `npm-run-all` command
+
+```
+Usage:
+ $ npm-run-all [--help | -h | --version | -v]
+ $ npm-run-all [tasks] [OPTIONS]
+
+ Run given npm-scripts in parallel or sequential.
+
+ <tasks> : A list of npm-scripts' names and Glob-like patterns.
+
+Options:
+ --aggregate-output - - - Avoid interleaving output by delaying printing of
+ each command's output until it has finished.
+ -c, --continue-on-error - Set the flag to continue executing
+ other/subsequent tasks even if a task threw an
+ error. 'npm-run-all' itself will exit with
+ non-zero code if one or more tasks threw error(s)
+ --max-parallel <number> - Set the maximum number of parallelism. Default is
+ unlimited.
+ --npm-path <string> - - - Set the path to npm. Default is the value of
+ environment variable npm_execpath.
+ If the variable is not defined, then it's "npm."
+ In this case, the "npm" command must be found in
+ environment variable PATH.
+ -l, --print-label - - - - Set the flag to print the task name as a prefix
+ on each line of output. Tools in tasks may stop
+ coloring their output if this option was given.
+ -n, --print-name - - - - Set the flag to print the task name before
+ running each task.
+ -p, --parallel <tasks> - Run a group of tasks in parallel.
+ e.g. 'npm-run-all -p foo bar' is similar to
+ 'npm run foo & npm run bar'.
+ -r, --race - - - - - - - Set the flag to kill all tasks when a task
+ finished with zero. This option is valid only
+ with 'parallel' option.
+ -s, --sequential <tasks> - Run a group of tasks sequentially.
+ --serial <tasks> e.g. 'npm-run-all -s foo bar' is similar to
+ 'npm run foo && npm run bar'.
+ '--serial' is a synonym of '--sequential'.
+ --silent - - - - - - - - Set 'silent' to the log level of npm.
+
+Examples:
+ $ npm-run-all --serial clean lint build:**
+ $ npm-run-all --parallel watch:**
+ $ npm-run-all clean lint --parallel "build:** -- --watch"
+ $ npm-run-all -l -p start-server start-browser start-electron
+```
+
+### npm-scripts
+
+It's `"scripts"` field of `package.json`.
+For example:
+
+```json
+{
+ "scripts": {
+ "clean": "rimraf dist",
+ "lint": "eslint src",
+ "build": "babel src -o lib"
+ }
+}
+```
+
+We can run a script with `npm run` command.
+On the other hand, this `npm-run-all` command runs multiple scripts in parallel or sequential.
+
+### Run scripts sequentially
+
+```
+$ npm-run-all clean lint build
+```
+
+This is same as `npm run clean && npm run lint && npm run build`.
+
+**Note:** If a script exited with non zero code, the following scripts are not run.
+If `--continue-on-error` option is given, this behavior will be disabled.
+
+### Run scripts in parallel
+
+```
+$ npm-run-all --parallel lint build
+```
+
+This is similar to `npm run lint & npm run build`.
+
+**Note1:** If a script exited with a non-zero code, the other scripts and those descendant processes are killed with `SIGTERM` (On Windows, with `taskkill.exe /F /T`).
+If `--continue-on-error` option is given, this behavior will be disabled.
+
+**Note2:** `&` operator does not work on Windows' `cmd.exe`. But `npm-run-all --parallel` works fine there.
+
+### Run a mix of sequential and parallel scripts
+
+```
+$ npm-run-all clean lint --parallel watch:html watch:js
+```
+
+1. First, this runs `clean` and `lint` sequentially / serially.
+2. Next, runs `watch:html` and `watch:js` in parallel.
+
+```
+$ npm-run-all a b --parallel c d --sequential e f --parallel g h i
+```
+or
+
+```
+$ npm-run-all a b --parallel c d --serial e f --parallel g h i
+```
+
+1. First, runs `a` and `b` sequentially / serially.
+2. Second, runs `c` and `d` in parallel.
+3. Third, runs `e` and `f` sequentially / serially.
+4. Lastly, runs `g`, `h`, and `i` in parallel.
+
+### Glob-like pattern matching for script names
+
+We can use [glob]-like patterns to specify npm-scripts.
+The difference is one -- the separator is `:` instead of `/`.
+
+```
+$ npm-run-all --parallel watch:*
+```
+
+In this case, runs sub scripts of `watch`. For example: `watch:html`, `watch:js`.
+But, doesn't run sub-sub scripts. For example: `watch:js:index`.
+
+```
+$ npm-run-all --parallel watch:**
+```
+
+If we use a globstar `**`, runs both sub scripts and sub-sub scripts.
+
+`npm-run-all` reads the actual npm-script list from `package.json` in the current directory, then filters the scripts by glob-like patterns, then runs those.
+
+### Run with arguments
+
+We can enclose a script name or a pattern in quotes to use arguments.
+The following 2 commands are similar.
+
+```
+$ npm-run-all --parallel "build:* -- --watch"
+$ npm run build:aaa -- --watch & npm run build:bbb -- --watch
+```
+
+When we use a pattern, arguments are forwarded to every matched script.
+
+### Argument placeholders
+
+We can use placeholders to give the arguments preceded by `--` to scripts.
+
+```
+$ npm-run-all build "start-server -- --port {1}" -- 8080
+```
+
+This is useful to pass through arguments from `npm run` command.
+
+```json
+{
+ "scripts": {
+ "start": "npm-run-all build \"start-server -- --port {1}\" --"
+ }
+}
+```
+
+```
+$ npm run start 8080
+
+> example@0.0.0 start /path/to/package.json
+> npm-run-all build "start-server -- --port {1}" -- "8080"
+```
+
+There are the following placeholders:
+
+- `{1}`, `{2}`, ... -- An argument. `{1}` is the 1st argument. `{2}` is the 2nd.
+- `{@}` -- All arguments.
+- `{*}` -- All arguments as combined.
+
+Those are similar to [Shell Parameters](http://www.gnu.org/software/bash/manual/bashref.html#Shell-Parameters). But please note arguments are enclosed by double quotes automatically (similar to npm).
+
+### Known Limitations
+
+- If `--print-label` option is given, some tools in scripts might stop coloring their output.
+ Because some coloring library (e.g. [chalk]) will stop coloring if `process.stdout` is not a TTY.
+ `npm-run-all` changes the `process.stdout` of child processes to a pipe in order to add labels to the head of each line if `--print-label` option is given.<br>
+ For example, [eslint] stops coloring under `npm-run-all --print-label`. But [eslint] has `--color` option to force coloring, we can use it. For anything [chalk] based you can set the environment variable `FORCE_COLOR=1` to produce colored output anyway.
+
+[glob]: https://www.npmjs.com/package/glob#glob-primer
+[chalk]: https://www.npmjs.com/package/chalk
+[eslint]: https://www.npmjs.com/package/eslint