.travis.yml

@@ -3,6 +3,7 @@ node_js:
   - node
   - 6
   - 8
+  - 10
 os:
   - linux
   - osx

CHANGELOG.md

@@ -13,6 +13,17 @@ project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
+## [11.3.0] - 2019-04-02
+
+### 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](https://prometheus.io/docs/instrumenting/writing_clientlibs/#labels)
+
 ## [11.2.1]
 
 ### Breaking
@@ -21,190 +32,190 @@ project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
-* Updated types for Summary in typescript definition file
+- Updated types for Summary in typescript definition file
 
 ## [11.2.0]
 
 ### Changed
 
-* Updated child dependency `merge` patch version to remove vulnerability.
+- 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
+- Added an initial `benchmark` suite which can be run with `npm run benchmarks`.
+- Add support for sliding windows in Summaries
 
 ## [11.1.3] - 2018-09-22
 
 ### Changed
 
-* Fixed performance by avoiding `Object.assign` on hot paths, as well as
+- Fixed performance by avoiding `Object.assign` on hot paths, as well as
   mutating objects when appropriate.
 
 ## [11.1.2] - 2018-09-19
 
 ### 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
+- 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
 
 ## [11.1.1] - 2018-06-29
 
 ### Changed
 
-* Fixed `processOpenFileDescriptors` metric when no custom config was set
+- Fixed `processOpenFileDescriptors` metric when no custom config was set
 
 ## [11.1.0] - 2018-06-29
 
-* Added ability to set a name prefix in the default metrics
+- 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
+- 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
+- Fixed `AggregatorFactory` losing the aggregator method of metrics
 
 ## [11.0.0] - 2018-03-10
 
 ### Breaking
 
-* Fixed `gauge.setToCurrentTime()` to use seconds instead of milliseconds
-  * This conforms to Prometheus
+- Fixed `gauge.setToCurrentTime()` to use seconds instead of milliseconds
+  - This conforms to Prometheus
     [best practices](https://prometheus.io/docs/practices/naming/#base-units)
-* Dropped support for node 4
+- Dropped support for node 4
 
 ## [10.2.3] - 2018-02-28
 
 ### Breaking
 
 ### Changed
 
-* Fixed issue that `registry.getMetricsAsJSON()` ignores registry default labels
+- Fixed issue that `registry.getMetricsAsJSON()` ignores registry default labels
 
 ### Added
 
 ## [10.2.2] - 2017-11-02
 
 ### Changed
 
-* Fixed invalid `process_virtual_memory_bytes` reported under linux
+- Fixed invalid `process_virtual_memory_bytes` reported under linux
 
 ## [10.2.1] - 2017-10-27
 
 ### Changed
 
-* Only resolve/reject `clusterMetrics` promise if no callback is provided
+- Only resolve/reject `clusterMetrics` promise if no callback is provided
 
 ## [10.2.0] - 2017-10-16
 
 ### Changed
 
-* Don't add event listeners if cluster module is not used.
-* Fixed issue with counters having extra records when using empty labels
+- 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
+- Added `reset` to Counter and Gauge
+- Added `resetMetrics` to register to calling `reset` of all metric instances
 
 ## [10.1.1] - 2017-09-26
 
 ### Changed
 
-* Update TypeScript definitions and JSDoc comments to match JavaScript sources
-* Fix lexical scope of `arguments` in cluster code
+- Update TypeScript definitions and JSDoc comments to match JavaScript sources
+- Fix lexical scope of `arguments` in cluster code
 
 ## [10.1.0] - 2017-09-04
 
 ### Added
 
-* Support aggregating metrics across workers in a Node.js cluster.
+- Support aggregating metrics across workers in a Node.js cluster.
 
 ## [10.0.4] - 2017-08-22
 
 ### Changed
 
-* Include invalid values in the error messages
+- Include invalid values in the error messages
 
 ## [10.0.3] - 2017-08-07
 
 ### Added
 
-* Added registerMetric to definitions file
+- Added registerMetric to definitions file
 
 ### Changed
 
-* Fixed typing of DefaultMetricsCollectorConfiguration in definitions file
-* Don't pass timestamps through to pushgateway by default
+- Fixed typing of DefaultMetricsCollectorConfiguration in definitions file
+- Don't pass timestamps through to pushgateway by default
 
 ## [10.0.2] - 2017-07-07
 
 ### Changed
 
-* Don't poll default metrics every single tick
+- Don't poll default metrics every single tick
 
 ## [10.0.1] - 2017-07-06
 
 ### Added
 
-* Metrics should be initialized to 0 when there are no labels
+- Metrics should be initialized to 0 when there are no labels
 
 ## [10.0.0] - 2017-07-04
 
 ### Breaking
 
-* Print deprecation warning when metrics are constructed using non-objects
-* Print deprecation warning when `collectDefaultMetrics` is called with a number
+- 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
+- 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`
+- 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`
 
 ## [9.1.1] - 2017-06-17
 
 ### Changed
 
-* Don't set timestamps for metrics that are never updated
+- Don't set timestamps for metrics that are never updated
 
 ## [9.1.0] - 2017-06-07
 
 ### Added
 
-* Ability to merge registries
+- Ability to merge registries
 
 ### Changed
 
-* Correct typedefs for object constructor of metrics
+- Correct typedefs for object constructor of metrics
 
 ## [9.0.0] - 2017-05-06
 
 ### Added
 
-* Support for multiple registers
-* Support for object literals in metric constructors
-* Timestamp support
+- Support for multiple registers
+- Support for object literals in metric constructors
+- Timestamp support
 
 ### Changed
 
-* Collection of default metrics is now disabled by default. Start collection by
+- Collection of default metrics is now disabled by default. Start collection by
   running `collectDefaultMetrics()`.
 
 ### Deprecated
 
-* Creating metrics with one argument per parameter - use object literals
+- Creating metrics with one argument per parameter - use object literals
   instead.
 
 [unreleased]: https://github.com/siimon/prom-client/compare/v10.2.2...HEAD

README.md

@@ -142,14 +142,6 @@ counter.inc(); // Inc with 1
 counter.inc(10); // Inc with 10
 ```
 
-A counter can be reset manually. This removes the label-values combinations and
-initializes to 0.
-
-```js
-counter.reset();
-counter.inc(); // Inc with 1 starting from 0
-```
-
 ### Gauge
 
 Gauges are similar to Counters but Gauges value can be decreased.
@@ -164,14 +156,6 @@ gauge.dec(); // Dec with 1
 gauge.dec(10); // Dec with 10
 ```
 
-A gauge can be reset manually. This removes the label-values combinations and
-initializes to 0.
-
-```js
-gauge.reset();
-gauge.inc(); // Inc with 1 starting from 0
-```
-
 There are some utilities for common use cases:
 
 ```js
@@ -233,13 +217,6 @@ xhrRequest(function(err, res) {
 });
 ```
 
-A Histogram can be reset manually. This removes the label-values combinations
-and reinitializes the observations.
-
-```js
-histogram.reset();
-```
-
 ### Summary
 
 Summaries calculate percentiles of observed values.
@@ -295,13 +272,6 @@ xhrRequest(function(err, res) {
 });
 ```
 
-A Summary can be reset manually. This removes the label-values combinations and
-reinitializes the observations.
-
-```js
-summary.reset();
-```
-
 ### Labels
 
 All metrics can take a labelNames property in the configuration object. All

appveyor.yml

@@ -1,16 +1,18 @@
 init:
-  - git config --global core.autocrlf true
+  - git config --global core.autocrlf false
 
 environment:
   matrix:
     - nodejs_version: 6
-    - nodejs_version: 7
     - nodejs_version: 8
-    - nodejs_version: 9
+    - nodejs_version: 10
+    - nodejs_version: 11
 
 install:
   - ps: Install-Product node $env:nodejs_version
-  - npm install
+  - npm -g install npm
+  - set PATH=%APPDATA%\npm;%PATH%
+  - npm ci
 
 test_script:
   - node --version && npm --version

benchmarks/index.js

@@ -9,6 +9,7 @@ const benchmarks = createRegressionBenchmark(currentClient, [
 
 benchmarks.suite('registry', require('./registry'));
 benchmarks.suite('histogram', require('./histogram'));
+benchmarks.suite('summary', require('./summary'));
 benchmarks.run().catch(err => {
 	console.error(err.stack);
 	// eslint-disable-next-line no-process-exit