node-modules/childprocess

Name: childprocess

Owner: node_modules

Description: Wrap `child_process` module to support Multiple Process Code Coverage with istanbul.

Created: 2015-08-30 02:57:23.0

Updated: 2018-03-11 14:59:33.0

Pushed: 2016-07-18 13:57:02.0

Homepage: null

Size: 23

Language: JavaScript

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README

childprocess

Inject script into multiple process when using child_process.fork.

One of the use case is Multiple Process Code Coverage with istanbul.

• cluster code coverage with istanbul

Install

m i childprocess

Usage

ire('childprocess').inject(function(modulePath, args, opt) {
nst execFile = 'path/to/istanbul';
nst cwd = opt.cwd && process.cwd();
nst execArgs = [
'cover',
'--root', cwd,
'--dir', path.join(cwd, './coverage'),
'--report', 'none',
'--print', 'none',
'--include-pid',
modulePath,
'--',
concat(args);
turn [execFile, execArgs, opt];

ire('child_process').fork();

APIs

inject(cb) / inject(filepath)

Inject script when using child_process.fork.

The inject script is a function that running in sandbox in every process. that mean you can't use the variable out of the function.

The function should return an array that contains 3 arguments same as fork.

dprocess.inject(function(modulePath, args, opt) {
turn [modulePath, args, opt];

reset()

Use child_process.fork without injected script.

License

MIT