drop node 8 (#188)

- bump jest to 27.2.4
- bump babel-jest to 27.2.4
- bump rollup to 2.58.0
- bump @rollup/plugin-commonjs to 21.0.0
- bump @rollup/plugin-json to 4.1.0
- bump @rollup/plugin-node-resolver to 13.0.5
- bump @rollup/plugin-replace to 3.0.0

.circleci/config.yml

@@ -19,7 +19,7 @@ filters_publish: &filters_publish
 matrix_nodeversions: &matrix_nodeversions
   matrix:
     parameters:
-      nodeversion: ["8.17", "10.24", "12.22", "14.17", "15.14", "16.2"]
+      nodeversion: ["10.24", "12.22", "14.17", "15.14", "16.2"]
 
 # Default version of node to use for lint and publishing
 default_nodeversion: &default_nodeversion "12.22"

.eslintrc.json

@@ -16,7 +16,6 @@
     "prefer-arrow-callback": "error",
     "no-var": "error",
     "eqeqeq": "error",
-    "comma-dangle": "error",
     "quotes": ["error", "double", { "avoidEscape": true }],
     "camelcase": "error",
     "sort-imports": "error",

README.md

@@ -5,21 +5,20 @@
 [![npm version](https://badge.fury.io/js/libhoney.svg)](https://badge.fury.io/js/libhoney)
 
 A Node.js module for sending events to [Honeycomb](https://www.honeycomb.io), a service for debugging your software in production.
+For tracing support and automatic instrumentation of Express and other common libraries, check out our [Beeline for NodeJS](https://github.com/honeycombio/beeline-nodejs).
 
-**NOTE** For use in browser-side JavaScript applications, generate an API key that has permission only to send events.
+[Usage and Examples](https://docs.honeycomb.io/getting-data-in/javascript/libhoney/)
 
-Requires any current LTS release of Node.js. Currently v8, and >= v10. [Node 8 support is being dropped](https://github.com/honeycombio/libhoney-js/issues/140)
+**NOTE** For use in browser-side JavaScript applications, generate an API key that has permission only to send events.
 
--   [Usage and Examples](https://docs.honeycomb.io/sdk/javascript/)
--   [API Reference](https://doc.esdoc.org/github.com/honeycombio/libhoney-js/)
+## Dependencies
 
-For tracing support and automatic instrumentation of Express and other common libraries, check out our [Beeline for NodeJS](https://github.com/honeycombio/beeline-nodejs).
+**Node 10+**
 
 ## Contributions
 
 Features, bug fixes and other changes to libhoney are gladly accepted. Please
-open issues or a pull request with your change. Remember to add your name to the
-CONTRIBUTORS file!
+open issues or a pull request with your change.
 
 All contributions will be released under the Apache License 2.0.