Migrate to NPM (#254)

* chore: migrate to npm

Migrates the repository itself as well as the template projects from
yarn to npm.

Also updates to Node 22.

* fix: widget template test cases

- add jest-environment-dom dependency
- adapt config to consume cjs variants of dependencies
- add DragEvent mock required by Lumino
- remove react warnings during execution

---------

Co-authored-by: Stefan Dirix <[email protected]>

Author: JonasHelming

.github/workflows/ci-cd.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-22.04]
-        node: [20]
+        node: [22]
 
     steps:
       - name: Checkout
@@ -33,19 +33,19 @@ jobs:
 
       - name: Install
         shell: bash
-        run: yarn install
+        run: npm ci
 
       - name: Test
         shell: bash
-        run: yarn test
+        run: npm test
 
   test-with-theia-latest:
     runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         os: [ubuntu-22.04]
-        node: [20]
+        node: [22]
 
     steps:
       - name: Checkout
@@ -60,7 +60,7 @@ jobs:
 
       - name: Install
         shell: bash
-        run: yarn install
+        run: npm ci
 
       - name: Generate and Build Templates with Latest Theia version
         shell: bash
@@ -72,7 +72,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-22.04]
-        node: [20]
+        node: [22]
 
     steps:
       - name: Checkout
@@ -87,7 +87,7 @@ jobs:
 
       - name: Install
         shell: bash
-        run: yarn install
+        run: npm ci
 
       - name: Generate and Build Templates with Next Theia version
         shell: bash

.gitignore

@@ -5,4 +5,3 @@ lib
 *-app/*
 !*-app/package.json
 generators
-package-lock.json