ENG-0000 - Update nepal-client-libs to use node18 (#839)

This completely removed the karma-typescript-es6-transform plugin and
relies in newer language features instead.

All karma configurations have been consolidated into a single shared
config that is invoked by each package's config.

.gitignore

@@ -26,7 +26,5 @@ coverage
 packages/*/coverage
 packages/*/dist
 
-package-lock.json
-
 #needed to use hub in the pipeline
 bin

.npmrc

@@ -1 +0,0 @@
-package-lock=false

packages/subscriptions/karma.conf.js → karma.shared.config.js

@@ -1,4 +1,4 @@
-module.exports = function (config) {
+module.exports = function( config, name ) {
   config.set({
 
     frameworks: ["mocha", "karma-typescript"],
@@ -25,20 +25,18 @@ module.exports = function (config) {
     karmaTypescriptConfig: {
       bundlerOptions: {
         acornOptions: {
-          ecmaVersion: 8,
+          ecmaVersion: 2018,
         },
       },
       tsconfig: "tsconfig.spec.json",
       reports:
       {
         "html": {
-          "directory": "./../../coverage/subscriptions-client",
-          "subdirectory": "report"
+          "directory": `../../coverage/${name}`
         },
         "text-summary": "",
         "json-summary": {
-          "directory": "./../../coverage/subscriptions-client",
-          "subdirectory": "summary",
+          "directory": `../../coverage/${name}`,
           "filename": "json-summary.json"
         }
       },