Tests

.eslintrc

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+{
+	"root": true,
+
+	"extends": "@ljharb",
+
+	"rules": {
+		"max-statements-per-line": [2, { "max": 2 }],
+		"no-magic-numbers": 0,
+		"multiline-comment-style": 0,
+	}
+}

.github/FUNDING.yml

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+# These are supported funding model platforms
+
+github: [ljharb]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: npm/has-tostringtag
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/workflows/node-10-11.yml

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+name: 'Tests: node.js (v10 - v11)'
+
+on: [pull_request, push]
+
+jobs:
+  matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      latest: ${{ steps.set-matrix.outputs.requireds }}
+      minors: ${{ steps.set-matrix.outputs.optionals }}
+    steps:
+      - uses: ljharb/actions/node/matrix@main
+        id: set-matrix
+        with:
+          versionsAsRoot: true
+          preset: '^10 || ^11'
+
+  latest:
+    needs: [matrix]
+    name: 'latest minors'
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.latest) }}
+        command:
+          - test:stock
+          - test:staging
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  minors:
+    needs: [matrix, latest]
+    name: 'non-latest minors'
+    continue-on-error: true
+    if: ${{ !github.head_ref || !startsWith(github.head_ref, 'renovate') }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.minors) }}
+        command:
+          - test:stock
+          - test:staging
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  node:
+    name: 'node v10 - v11'
+    needs: [latest, minors]
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo tests completed'

.github/workflows/node-12-13.yml

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+name: 'Tests: node.js (v12 - v13)'
+
+on: [pull_request, push]
+
+jobs:
+  matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      latest: ${{ steps.set-matrix.outputs.requireds }}
+      minors: ${{ steps.set-matrix.outputs.optionals }}
+    steps:
+      - uses: ljharb/actions/node/matrix@main
+        id: set-matrix
+        with:
+          versionsAsRoot: true
+          preset: '^12 || ^13'
+
+  latest:
+    needs: [matrix]
+    name: 'latest minors'
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.latest) }}
+        command:
+          - test:stock
+          - test:staging
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  minors:
+    needs: [matrix, latest]
+    name: 'non-latest minors'
+    continue-on-error: true
+    if: ${{ !github.head_ref || !startsWith(github.head_ref, 'renovate') }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.minors) }}
+        command:
+          - test:stock
+          - test:staging
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  node:
+    name: 'node v12 - v13'
+    needs: [latest, minors]
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo tests completed'

.github/workflows/node-14-15.yml

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+name: 'Tests: node.js (v14 - v15)'
+
+on: [pull_request, push]
+
+jobs:
+  matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      latest: ${{ steps.set-matrix.outputs.requireds }}
+      minors: ${{ steps.set-matrix.outputs.optionals }}
+    steps:
+      - uses: ljharb/actions/node/matrix@main
+        id: set-matrix
+        with:
+          versionsAsRoot: true
+          preset: '^14 || ^15'
+
+  latest:
+    needs: [matrix]
+    name: 'latest minors'
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.latest) }}
+        command:
+          - test:stock
+          - test:staging
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  minors:
+    needs: [matrix, latest]
+    name: 'non-latest minors'
+    continue-on-error: true
+    if: ${{ !github.head_ref || !startsWith(github.head_ref, 'renovate') }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.minors) }}
+        command:
+          - test:stock
+          - test:staging
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  node:
+    name: 'node v14 - v15'
+    needs: [latest, minors]
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo tests completed'

.github/workflows/node-16+.yml

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+name: 'Tests: node.js (v16+)'
+
+on: [pull_request, push]
+
+jobs:
+  matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      latest: ${{ steps.set-matrix.outputs.requireds }}
+      minors: ${{ steps.set-matrix.outputs.optionals }}
+    steps:
+      - uses: ljharb/actions/node/matrix@main
+        id: set-matrix
+        with:
+          versionsAsRoot: true
+          preset: '>=16'
+
+  latest:
+    needs: [matrix]
+    name: 'latest minors'
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.latest) }}
+        command:
+          - test:stock
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  minors:
+    needs: [matrix, latest]
+    name: 'non-latest minors'
+    continue-on-error: true
+    if: ${{ !github.head_ref || !startsWith(github.head_ref, 'renovate') }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.minors) }}
+        command:
+          - test:stock
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  node:
+    name: 'node v16+'
+    needs: [latest, minors]
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo tests completed'

.github/workflows/node-4-6.yml

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+name: 'Tests: node.js (v4 - v6)'
+
+on: [pull_request, push]
+
+jobs:
+  matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      latest: ${{ steps.set-matrix.outputs.requireds }}
+      minors: ${{ steps.set-matrix.outputs.optionals }}
+    steps:
+      - uses: ljharb/actions/node/matrix@main
+        id: set-matrix
+        with:
+          versionsAsRoot: true
+          preset: '^4 || ^5 || ^6'
+
+  latest:
+    needs: [matrix]
+    name: 'latest minors'
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.latest) }}
+        command:
+          - test:stock
+          - test:staging
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  minors:
+    needs: [matrix, latest]
+    name: 'non-latest minors'
+    continue-on-error: true
+    if: ${{ !github.head_ref || !startsWith(github.head_ref, 'renovate') }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: ${{ fromJson(needs.matrix.outputs.minors) }}
+        command:
+          - test:stock
+          - test:staging
+          - test:shams:corejs
+          - test:shams:getownpropertysymbols
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@main
+        name: 'nvm install ${{ matrix.node-version }} && npm install'
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm run ${{ matrix.command }}
+      - uses: codecov/codecov-action@v1
+
+  node:
+    name: 'node v4 - v6'
+    needs: [latest, minors]
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo tests completed'