refactor: update Node.js semver support matrix

BREAKING CHANGE: Drop support for Node.js v10.x

BREAKING CHANGE: Only Node.js LTS releases Codename Erbium (^12.19.0)
and newer are supported. Currently this means ^12.19.0 (Erbium),
^14.15.0 (Fermium), and ^16.13.0 (Gallium).

.github/workflows/test.yml

@@ -38,24 +38,21 @@ jobs:
 
   test:
     name: Node Tests + Coverage
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
+    continue-on-error: ${{ matrix.experimental || false }}
     strategy:
+      fail-fast: false
       matrix:
         node-version:
-          - 10.19.0
-          - 10
-          - 12.0.0
+          - 12.19.0
           - 12
-          - 13.7.0
-          - 13
-          - 14.2.0
+          - 14.15.0
           - 14
-          - 15.0.1
-          - 15
-          - '>=15'
-        os:
-          - ubuntu-latest
-          - windows-latest
+          - 16.13.0
+          - 16
+        include:
+          - experimental: true
+            node-version: '>=17'
     steps:
       - name: Checkout
         uses: actions/checkout@master
@@ -83,16 +80,8 @@ jobs:
     strategy:
       matrix:
         electron-version:
-          - 6.0.0
-          - 6
-          - 7.0.0
-          - 7
-          - 8.0.0
-          - 8
-          - 9.0.0
-          - 9
-          - 10.0.0
-          - 10
+          - 12.0.0
+          - latest
         os:
           - ubuntu-latest
           - windows-latest

README.md

@@ -90,7 +90,9 @@ or koa middlewares. Those can however be built using the exposed API.
 
 ## Install
 
-Node.js version **>=12.0.0** is recommended, but **^10.19.0** lts/dubnium is also supported.
+Node.js LTS releases Codename Erbium (starting with ^12.19.0) and newer LTS releases are supported. 
+This means  ^12.19.0 (Erbium), ^14.15.0 (Fermium), and ^16.13.0 (Gallium). Future LTS releases will
+be added to this list as they're released.
 
 ```console
 npm install openid-client
@@ -253,11 +255,6 @@ This will poll in the defined interval and only resolve with a TokenSet once one
 will handle the defined `authorization_pending` and `slow_down` "soft" errors and continue polling
 but upon any other error it will reject. With tokenSet received you can throw away the handle.
 
-## Electron Support
-
-Electron >=v6.0.0 runtime is supported to the extent of the crypto engine BoringSSL feature parity
-with standard Node.js OpenSSL.
-
 ## FAQ
 
 #### Semver?
@@ -269,8 +266,8 @@ private API and is subject to change between any versions.
 
 #### How do I use it outside of Node.js
 
-It is **only built for ^10.19.0 || >=12.0.0 Node.js** environment - including openid-client in
-browser-environment targeted projects is not supported and may result in unexpected results.
+It is **only built for Node.js** environments - including openid-client in
+browser-environment targeted projects is not supported.
 
 #### How to make the client send client_id and client_secret in the body?
 

package.json

@@ -74,7 +74,7 @@
     "timekeeper": "^2.2.0"
   },
   "engines": {
-    "node": "^10.19.0 || >=12.0.0 < 13 || >=13.7.0 < 14 || >= 14.2.0"
+    "node": "^12.19.0 || ^14.15.0 || ^16.13.0"
   },
   "standard-version": {
     "scripts": {