Brian Love
Angular + TypeScript Developer in Denver, CO



  • Bug fix: Don’t run the code associated with enable/disable if the gauge is already enabled or disabled respectively. This prevents leaking event listeners, amongst other weirdness.
  • New feature: Template items can have default values that will be used if no value was otherwise passed in.


  • Default to enabled only if we have a tty. Users can always override this by passing in the enabled option explicitly or by calling calling gauge.enable().


  • Externalized ./console-strings.js into console-control-strings.


  • Update to signal-exit@3.0.0, which fixes a compatibility bug with the node profiler.
  • #39 Fix tests on 0.10 and add a missing devDependency. (@helloyou2012)


  • Add way to programmatically fetch a list of theme names in a themeset (Themeset.getThemeNames).


  • Add support for setting themesets on existing gauge objects.
  • Add post-IO callback to gauge.hide() as it is somtetimes necessary when your terminal is interleaving output from multiple filehandles (ie, stdout & stderr).


  • Fix a refactor bug in setTheme where it wasn’t accepting the various types of args it should.



  • Add setTemplate & setTheme back in.
  • Add support for named themes, you can now ask for things like ‘colorASCII’ and ‘brailleSpinner’. Of course, you can still pass in theme objects. Additionally you can now pass in an object with hasUnicode, hasColor and platform keys in order to override our guesses as to those values when selecting a default theme from the themeset.
  • Make the output stream optional (it defaults to process.stderr now).
  • Add setWriteTo(stream[, tty]) to change the output stream and, optionally, tty.


  • Abort the display phase early if we’re supposed to be hidden and we are.
  • Stop printing a bunch of spaces at the end of lines, since we’re already using an erase-to-end-of-line code anyway.
  • The unicode themes were missing the subsection separator.


  • Fix image in readme


  • All new themes API– reference themes by name and pass in custom themes and themesets (themesets get platform support autodetection done on them to select the best theme). Theme mixins let you add features to all existing themes.
  • Much, much improved test coverage.


  • Got rid of ░ in the default platform, noUnicode, hasColor theme. Thanks to @yongtw123 for pointing out this had snuck in.
  • Fiddled with the demo output to make it easier to see the spinner spin. Also added prints before each platforms test output.
  • I forgot to include signal-exit in our deps. <.< Thank you @KenanY for finding this. Then I was lazy and made a new commit instead of using his PR. Again, thank you for your patience @KenenY.
  • Drastically speed up travis testing.
  • Add a small javascript demo (demo.js) for showing off the various themes (and testing them on diff platforms).
  • Change: The subsection separator from ⁄ and / (different chars) to >.
  • Fix crasher: A show or pulse without a label would cause the template renderer to complain about a missing value.
  • New feature: Add the ability to disable the clean-up-on-exit behavior. Not something I expect to be widely desirable, but important if you have multiple distinct gauge instances in your app.
  • Use our own color support detection. The has-color module proved too magic for my needs, making assumptions as to which stream we write to and reading command line arguments.


This is a major rewrite of the internals. Externally there are fewer changes:

  • On node>0.8 gauge object now prints updates at a fixed rate. This means that when you call show it may wate up to updateInterval ms before it actually prints an update. You override this behavior with the fixedFramerate option.
  • The gauge object now keeps the cursor hidden as long as it’s enabled and shown.
  • The constructor’s arguments have changed, now it takes a mandatory output stream and an optional options object. The stream no longer needs to be an ansiified stream, although it can be if you want (but we won’t make use of its special features).
  • Previously the gauge was disabled by default if process.stdout wasn’t a tty. Now it always defaults to enabled. If you want the previous behavior set the enabled option to process.stdout.isTTY.
  • The constructor’s options have changed– see the docs for details.
  • Themes are entirely different. If you were using a custom theme, or referring to one directly (eg via Gauge.unicode or Gauge.ascii) then you’ll need to change your code. You can get the equivalent of the latter with: var themes = require('gauge/themes') var unicodeTheme = themes(true, true) // returns the color unicode theme for your platform The default themes no longer use any ambiguous width characters, so even if you choose to display those as wide your progress bar should still display correctly.
  • Templates are entirely different and if you were using a custom one, you should consult the documentation to learn how to recreate it. If you were using the default, be aware that it has changed and the result looks quite a bit different.