pebble/devsite/source/_changelogs/4.2.md

title, date

title	date
Pebble SDK 4.2 - Changelog	2016-10-18

Changes to Firmware

• Emery can now run apps compiled for Basalt (SDK 4.1 or earlier) or Aplite (SDK 3.7 or earlier) in "bezel mode".
• Fixed health_service_metric_accessible for heartrate-related metrics.
  • Note that, as heartrate data is only retained for two hours, HRM accessibility checks going back further than two hours will always return false.
• Rocky.js: The reliability of the postMessage API has been improved.
• Rocky.js: postmessageconnected, postmessagedisconnected and postmessageerror events have been added.
• Rocky.js: Using regular expressions no longer results in substantial app log spam.
• Rocky.js: The coordinate system was adjusted by 0.5 pixels; (0, 0) now refers to top left of the first pixel, rather than the center of the pixel.
• Rocky.js: The memorypressure event has been added. When fired with {level: 'high'}, the app must free up sufficient memory or it will be terminated.
• Rocky.js: Content size is exposed via UserPreferences.
• Rocky.js: watchInfo.platform now works as expected in the emulator.
• Rocky.js: Removed the global print() function; use console.log().
• Rocky.js: Fixed a crash when passing invalid values to clearTimeout or clearInterval.
• Rocky.js: Provided constructors for CanvasRenderingContext2D, RockyCanvasElement and Event.
• Rocky.js: Removed unimplemented methods that previously threw an exception when called, allowing for polyfills of those methods.
• Rocky.js: Added the ability to unsubscribe from events using removeEventListener or off.
• Bug fixes and improvements.

Changes to SDK

• Added support for the Emery platform.
• Rocky.js is now considered stable, and can be used to submit apps to the appstore.
• Rocky.js: The default app template has been improved.
• Added preferred_content_size() to retrieve the user's preferred font size.
• All JS bundling is now performed using webpack
  • Only JavaScript files that are actually used are now bundled.