feat: use git diff action

Author: technote-space

.github/workflows/ci.yml

@@ -16,20 +16,31 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 3
+      - uses: technote-space/get-diff-action@v1
+        id: git-diff
+        with:
+          PREFIX_FILTER: |
+            src/
+            __tests__/
+          SUFFIX_FILTER: .ts
       - name: Get Yarn Cache Directory
         id: yarn-cache
         run: echo "::set-output name=dir::$(yarn cache dir)"
+        if: steps.git-diff.outputs.diff
       - name: Cache node dependencies
         uses: actions/cache@v1
         with:
           path: ${{ steps.yarn-cache.outputs.dir }}
           key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
           restore-keys: |
             ${{ runner.os }}-yarn-
+        if: steps.git-diff.outputs.diff
       - name: Install Package dependencies
         run: yarn install
+        if: steps.git-diff.outputs.diff
       - name: Check code style
-        run: yarn lint
+        run: yarn eslint ${{ steps.git-diff.outputs.diff }}
+        if: steps.git-diff.outputs.diff
       - uses: 8398a7/action-slack@v1
         with:
           type: failure
@@ -49,30 +60,42 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 3
+      - uses: technote-space/get-diff-action@v1
+        id: git-diff
+        with:
+          PREFIX_FILTER: |
+            src/
+            __tests__/
+          SUFFIX_FILTER: .ts
       - name: Setup node
         uses: actions/setup-node@v1
         with:
           node-version: ${{ matrix.node }}
+        if: steps.git-diff.outputs.diff || github.event_name == 'push'
       - name: Get Yarn Cache Directory
         id: yarn-cache
         run: echo "::set-output name=dir::$(yarn cache dir)"
+        if: steps.git-diff.outputs.diff || github.event_name == 'push'
       - name: Cache node dependencies
         uses: actions/cache@v1
         with:
           path: ${{ steps.yarn-cache.outputs.dir }}
           key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
           restore-keys: |
             ${{ runner.os }}-yarn-
+        if: steps.git-diff.outputs.diff || github.event_name == 'push'
       - name: Install Package dependencies
         run: yarn install
+        if: steps.git-diff.outputs.diff || github.event_name == 'push'
       - name: Run tests
         run: yarn cover
+        if: steps.git-diff.outputs.diff || github.event_name == 'push'
       - name: Codecov
         run: curl -s https://codecov.io/bash | bash -s -- -t $CODECOV_TOKEN -f $COVERAGE_FILE
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
           COVERAGE_FILE: ./coverage/lcov.info
-        if: matrix.node == '12'
+        if: matrix.node == '12' && (steps.git-diff.outputs.diff || github.event_name == 'push')
       - uses: 8398a7/action-slack@v1
         with:
           type: failure