feat!: adds support for ESM and Deno

.github/workflows/ci.yaml

@@ -30,10 +30,25 @@ jobs:
   coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: 13
+          node-version: 14
       - run: npm install
       - run: npm test
       - run: npm run coverage
+  deno:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 14
+      - run: npm install
+      - run: npm run compile
+      - uses: denolib/setup-deno@v2
+        with:
+          deno-version: v1.x
+      - run: |
+          deno --version
+          deno test test/deno/yargs-test.ts

.gitignore

@@ -1,8 +1,8 @@
 .idea
-build/
 .nyc_output
 node_modules
 .DS_Store
 package-lock.json
 ./test/fixtures/package.json
 coverage
+build

.mocharc.json

@@ -1,6 +1,5 @@
 {
   "spec": [
-    "build/test",
     "test"
   ]
 }