chore: migrate to yarn v2 (#655)

Author: SimenB

.github/workflows/lint.yml

@@ -19,6 +19,15 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
+      - name: Get yarn cache
+        id: yarn-cache
+        run: echo "::set-output name=dir::$(yarn config get cacheFolder)"
+      - uses: actions/cache@v2
+        with:
+          path: ${{ steps.yarn-cache.outputs.dir }}
+          key: ubuntu-latest-node-12.x-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ubuntu-latest-node-12.x-yarn-
       - uses: actions/[email protected]
         with:
           node-version: 12.x

.github/workflows/nodejs.yml

@@ -24,6 +24,15 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+      - name: Get yarn cache
+        id: yarn-cache
+        run: echo "::set-output name=dir::$(yarn config get cacheFolder)"
+      - uses: actions/cache@v2
+        with:
+          path: ${{ steps.yarn-cache.outputs.dir }}
+          key: ubuntu-latest-node-12.x-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ubuntu-latest-node-12.x-yarn-
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/[email protected]
         with:
@@ -53,6 +62,17 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+      - name: Get yarn cache
+        id: yarn-cache
+        run: echo "::set-output name=dir::$(yarn config get cacheFolder)"
+      - uses: actions/cache@v2
+        with:
+          path: ${{ steps.yarn-cache.outputs.dir }}
+          key:
+            ${{ runner.os }}-node-${{ matrix.node-version }}-yarn-${{
+            hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-node-${{ matrix.node-version }}-yarn-
       - uses: actions/[email protected]
         with:
           node-version: 12.x

.github/workflows/release.yml

@@ -10,9 +10,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - name: Get yarn cache
+        id: yarn-cache
+        run: echo "::set-output name=dir::$(yarn config get cacheFolder)"
+      - uses: actions/cache@v2
+        with:
+          path: ${{ steps.yarn-cache.outputs.dir }}
+          key: ubuntu-latest-node-12.x-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ubuntu-latest-node-12.x-yarn-
       - uses: actions/[email protected]
         with:
-          node-version: '12.x'
+          node-version: 12.x
       - name: install
         run: yarn
       - name: run prettier

.gitignore

@@ -3,3 +3,9 @@ node_modules/
 coverage/
 lib/
 *.log
+.yarn/*
+!.yarn/releases
+!.yarn/plugins
+!.yarn/sdks
+!.yarn/versions
+.pnp.*

.yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs

@@ -0,0 +1,6 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+lastUpdateCheck 1576854265612
+yarn-path ".yarn/releases/yarn-sources.cjs"

.yarn/releases/yarn-sources.cjs

@@ -0,0 +1,9 @@
+enableGlobalCache: true
+
+nodeLinker: node-modules
+
+plugins:
+  - path: .yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs
+    spec: '@yarnpkg/plugin-interactive-tools'
+
+yarnPath: .yarn/releases/yarn-sources.cjs

.yarnrc

@@ -20,12 +20,11 @@
     "lib/"
   ],
   "scripts": {
-    "build": "babel --extensions .js,.ts src --out-dir lib --copy-files",
-    "postbuild": "rimraf lib/__tests__ lib/**/__tests__",
+    "build": "babel --extensions .js,.ts src --out-dir lib --copy-files && rimraf lib/__tests__ 'lib/**/__tests__'",
     "lint": "eslint . --ignore-pattern '!.eslintrc.js' --ext js,ts",
-    "prepack": "yarn build",
-    "prettier:check": "prettier --check docs/**/*.md README.md .github/** package.json tsconfig.json src/globals.json",
-    "prettier:write": "prettier --write docs/**/*.md README.md .github/** package.json tsconfig.json src/globals.json",
+    "prepack": "rimraf lib && yarn build",
+    "prettier:check": "prettier --check 'docs/**/*.md' README.md '.github/**' package.json tsconfig.json src/globals.json .yarnrc.yml",
+    "prettier:write": "prettier --write 'docs/**/*.md' README.md '.github/**' package.json tsconfig.json src/globals.json .yarnrc.yml",
     "test": "jest",
     "tools:regenerate-docs": "ts-node -T tools/regenerate-docs",
     "typecheck": "tsc -p ."
@@ -43,7 +42,7 @@
   },
   "lint-staged": {
     "*.{js,ts}": "eslint --fix",
-    "*.{md,json}": "prettier --write"
+    "*.{md,json,yml}": "prettier --write"
   },
   "prettier": {
     "arrowParens": "avoid",