Use volta to manage the "default" node / yarn versions.

Ideally we would not have to duplicate the version info for each of the
`package.json`s, but until Volta provides a way to properly manage
nested workspaces this is the best we can do.

.github/workflows/ci.yml

@@ -13,9 +13,6 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: volta-cli/action@v1
-        with:
-          node-version: 12
-          yarn-version: 1.22.4
       - run: yarn install --frozen-lockfile --non-interactive
       - run: yarn lint
       - run: yarn build
@@ -35,7 +32,6 @@ jobs:
       - uses: volta-cli/action@v1
         with:
           node-version: ${{ matrix.node-version }}
-          yarn-version: 1.22.4
       - run: yarn install --frozen-lockfile --non-interactive
       - run: yarn test:babel-plugins
 
@@ -46,9 +42,6 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: volta-cli/action@v1
-        with:
-          node-version: 12
-          yarn-version: 1.22.4
       - run: yarn install --frozen-lockfile --non-interactive
       - run: yarn testem ci
 
@@ -63,8 +56,5 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: volta-cli/action@v1
-        with:
-          node-version: 12
-          yarn-version: 1.22.4
       - run: yarn install --frozen-lockfile --non-interactive
       - run: yarn test:ember ember-${{ matrix.ember-version }} --skip-cleanup

package.json

@@ -99,7 +99,9 @@
       },
       "release-it-yarn-workspaces": {
         "additionalManifests": {
-          "dependencyUpdates": ["packages/@glimmer/blueprint/files/package.json"]
+          "dependencyUpdates": [
+            "packages/@glimmer/blueprint/files/package.json"
+          ]
         }
       }
     },
@@ -111,5 +113,9 @@
       "tokenRef": "GITHUB_AUTH"
     },
     "npm": false
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/@glimmer/blueprint/package.json

@@ -26,5 +26,9 @@
   },
   "ember-addon": {
     "main": "ember-addon-main.js"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/@glimmer/component/package.json

@@ -90,5 +90,9 @@
     "configPath": "tests/dummy/config",
     "defaultBlueprint": "install-glimmer-component",
     "main": "ember-addon-main.js"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/@glimmer/core/package.json

@@ -24,5 +24,9 @@
     "@glimmer/compiler": "^0.50.0",
     "@glimmer/component": "2.0.0-beta.3",
     "@glimmer/tracking": "2.0.0-beta.3"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/@glimmer/helper/package.json

@@ -16,5 +16,9 @@
     "@glimmer/core": "2.0.0-beta.3",
     "@glimmer/interfaces": "^0.50.0",
     "@glimmer/reference": "^0.50.0"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/@glimmer/modifier/package.json

@@ -14,5 +14,9 @@
   "dependencies": {
     "@glimmer/interfaces": "^0.50.0",
     "@simple-dom/interface": "^1.4.0"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/@glimmer/ssr/package.json

@@ -21,5 +21,9 @@
   },
   "devDependencies": {
     "@glimmer/component": "2.0.0-beta.3"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/@glimmer/tracking/package.json

@@ -23,5 +23,9 @@
     "@glimmer/interfaces": "^0.50.0",
     "@glimmer/resolver": "^0.3.0",
     "@glimmer/wire-format": "^0.50.0"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/babel-plugins/@glimmer/babel-plugin-glimmer-env/package.json

@@ -18,5 +18,9 @@
     "babel-plugin-tester": "^6.4.0",
     "esm": "^3.2.25",
     "mocha": "^6.2.0"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/babel-plugins/@glimmer/babel-plugin-strict-template-precompile/package.json

@@ -23,5 +23,9 @@
     "chai": "^4.2.0",
     "esm": "^3.2.25",
     "mocha": "^6.2.0"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }

packages/example-apps/basic/package.json

@@ -16,5 +16,9 @@
     "@glimmer/tracking": "^1.0.0",
     "@glimmer/helper": "^1.0.0",
     "@glimmer/modifier": "^1.0.0"
+  },
+  "volta": {
+    "node": "12.16.1",
+    "yarn": "1.22.4"
   }
 }