concurrently

Breaking Changes

• breaking

  Dropped support for Node.js <22.0.0.
  Older Node.js version have reached end-of-life, and certain features require new-ish JS APIs.

• breaking

  Concurrently is now ESM-only.
  It's now possible to require(esm). See here for interoperability.

• breaking

  Prefix colors now default to automatic - #581
  The colors used to default to reset (which does nothing). Concurrently now automatically selects a color, out of the box.
  The list of colors used is not jarring nor carries semantic meaning, and reads well in both dark and light terminal backgrounds.

• breaking

  Removed deprecated flags and options

  • CLI flag --name-separator: use commas instead.

  • API option killOthers: use killOthersOn instead.

New Features

• Support applying modifiers to hex prefix colors (e.g. #ff0000.bold) - #450

• Support chalk's color functions in prefixes (e.g. rgb(), hex(), bgRgb(), etc) - #578

• Set prefix background color via bg#RRGGBB - #578

• Allow shell override via --shell CLI flag/shell API option - #288, #589, #556
  concurrently distinguishes between cmd.exe, powershell, and POSIX-based shells.

• Manual prefix coloring in templates e.g. [{color}{name}{/color}] - #583, #587

Bug fixes

• Scope quote normalization to CLI input - #582, #585
  It should now also be possible to run commands like "/some/command" foo bar"

• Don't throw when color doesn't exist - #580

Security

• security

  Address vulnerability in shellquote - #591

Other changes

• Warn about running on Snap - #584