prom-client

Changed

• Check that cluster worker is still connected before attempting to query it for
  metrics. (#244)

Added

• Added a remove() method on each metric type, based on Prometheus "Writing Client Libraries" section on labels

Breaking

Changed

Added

• Updated types for Summary in typescript definition file

Changed

• Updated child dependency merge patch version to remove vulnerability.

Added

• Added an initial benchmark suite which can be run with npm run benchmarks.
• Add support for sliding windows in Summaries

Changed

• Allow setting Gauge values to NaN, +Inf, and -Inf
• Fixed histogram scrape performance by using acc.push instead of acc.concat. Fixes #216 with #219

Changed

• Fixed processOpenFileDescriptors metric when no custom config was set

• Added ability to set a name prefix in the default metrics

Changed

• Fixed startTimer utility to not mutate objects passed as startLabels
• Fixed Counter to validate labels parameter of inc() against initial
  labelset
• Fixed AggregatorFactory losing the aggregator method of metrics

Breaking

• Fixed gauge.setToCurrentTime() to use seconds instead of milliseconds
  • This conforms to Prometheus
    best practices
• Dropped support for node 4

Breaking

Changed

• Fixed issue that registry.getMetricsAsJSON() ignores registry default labels

Added

Changed

• Fixed invalid process_virtual_memory_bytes reported under linux

Changed

• Only resolve/reject clusterMetrics promise if no callback is provided

Changed

• Don't add event listeners if cluster module is not used.
• Fixed issue with counters having extra records when using empty labels

Added

• Added reset to Counter and Gauge
• Added resetMetrics to register to calling reset of all metric instances

Changed

• Update TypeScript definitions and JSDoc comments to match JavaScript sources
• Fix lexical scope of arguments in cluster code

Added

• Support aggregating metrics across workers in a Node.js cluster.

Changed

• Include invalid values in the error messages

Added

• Added registerMetric to definitions file

Changed

• Fixed typing of DefaultMetricsCollectorConfiguration in definitions file
• Don't pass timestamps through to pushgateway by default

Changed

• Don't poll default metrics every single tick

Added

• Metrics should be initialized to 0 when there are no labels

Breaking

• Print deprecation warning when metrics are constructed using non-objects
• Print deprecation warning when collectDefaultMetrics is called with a number

Added

• Ability to set default labels by registry
• Allow passing in registry as second argument to collectDefaultMetrics to
  use that instead of the default registry

Changed

• Convert code base to ES2015 code (node 4)
  • add engines field to package.json
  • Use object shorthand
  • Remove util-extend in favor of Object.assign
  • Arrow functions over binding or putting this in a variable
  • Use template strings
  • prototype -> class

Changed

• Don't set timestamps for metrics that are never updated

Added

• Ability to merge registries

Changed

• Correct typedefs for object constructor of metrics