fix: support nodejs LTS versions

Configure typescript to compile to es2018 instead of esnext.
fixes #51

.github/workflows/release.yml

@@ -4,8 +4,30 @@ on:
     branches: ["main", "next"]
 
 jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+        matrix:
+          node-version: [10.x, 12.x, 14.x, 15.x]
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: "0"
+          lfs: true
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Install deps
+        run: yarn
+      - name: Run unit tests
+        run: yarn test
+
   release:
     runs-on: ubuntu-latest
+    needs: test
+
     steps:
       - uses: actions/checkout@v2
         with:
@@ -16,7 +38,6 @@ jobs:
         with:
           node-version: "14"
       - run: yarn
-      - run: yarn test
       - run: yarn build
       - name: create npmrc file
         run: echo //registry.npmjs.org/:_authToken=${NPM_TOKEN} > .npmrc

packages/core/tsconfig.json

@@ -1,13 +1,14 @@
 {
     "compilerOptions": {
-        "target": "esnext",
+        "target": "es2018",
         "module": "esnext",
         "moduleResolution": "node",
         "esModuleInterop": true,
         "sourceMap": true,
         "declaration": true,
         "declarationDir": "dist",
         "strict": true,
+        "lib": ["esnext","DOM","DOM.Iterable"],
         "strictNullChecks": true
     },
     "include": [

packages/vite/tsconfig.json

@@ -1,6 +1,6 @@
 {
     "compilerOptions": {
-        "target": "esnext",
+        "target": "es2018",
         "module": "esnext",
         "moduleResolution": "node",
         "esModuleInterop": true,