Major refactoring of the shared models (readium#8)

.github/workflows/CI-shared.yml

@@ -0,0 +1,42 @@
+name: CI-shared
+on: 
+  push:
+    paths:
+      - 'shared/**'
+      - '.github/workflows/CI-shared.yml'
+
+jobs:
+  build:
+    name: Build, lint, and test on Node ${{ matrix.node }} and ${{ matrix.os }}
+
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        working-directory: ./shared
+    strategy:
+      matrix:
+        node: ['10.x', '12.x', '14.x']
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - name: Use Node ${{ matrix.node }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node }}
+
+      - name: Install deps and build (with cache)
+        uses: bahmutov/npm-install@v1
+        with:
+          working-directory: shared        
+
+      - name: Lint
+        run: yarn lint
+
+      - name: Test
+        run: yarn test --ci --coverage --maxWorkers=2
+
+      - name: Build
+        run: yarn build

.github/workflows/size-shared.yml

@@ -0,0 +1,14 @@
+name: size-shared
+on: [pull_request]
+jobs:
+  size:
+    runs-on: ubuntu-latest
+    env:
+      CI_JOB_NUMBER: 1
+    steps:
+      - uses: actions/checkout@v1
+      - uses: andresz1/size-limit-action@v1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          directory: shared/
+

.gitignore

@@ -0,0 +1,6 @@
+*.log
+.DS_Store
+node_modules
+dist
+types
+coverage