update node js version and build libs

Author: manu4543

.babelrc

@@ -1,5 +1,8 @@
 {
-  "plugins": ["@babel/plugin-proposal-class-properties"],
+  "plugins": [
+  ["@babel/plugin-transform-class-properties", { "loose": true }],
+  "@babel/plugin-transform-optional-chaining"
+],
   "presets": [
     "@babel/preset-typescript",
     [

.github/workflows/nodejs.yml

@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x]
+        node-version: [20.x]
 
     steps:
     - uses: actions/checkout@v1

.github/workflows/npmpublish.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x]
+        node-version: [20.x]
 
     steps:
     - uses: actions/checkout@v1
@@ -35,7 +35,7 @@ jobs:
     - uses: actions/checkout@v1
     - uses: actions/setup-node@v1
       with:
-        node-version: 12
+        node-version: 20
         registry-url: https://registry.npmjs.org/
     - name: NPM Publish
       run: |

.mocharc.json

@@ -1,6 +1,6 @@
 {
   "coverage": true,
-  "require": ["esm", "./babel-register.js"],
+  "require": ["./babel-register.js"],
   "exit": true,
   "timeout": "40000"
-}
+}