1 files changed, 20 insertions, 3 deletions
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5f5a928..eb6c347 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,15 +4,32 @@
 name: 'ci'
 on:
   push:
-    branches-ignore:
-      -[main]
+    branches:
+      - '!main'
 defaults:
   run:
     shell: 'bash'
 jobs:
+  changes:
+    runs-on: 'ubuntu-latest'
+    outputs:
+      ts: ${{ steps.filter.outputs.ts }}
+    steps:
+    - uses: actions/checkout@v2
+    - name: '[check if build necessary]' 
+      uses: dorny/paths-filter@v2
+      id: filter
+      with:
+        filters: |
+          ts:
+            - '*.ts'
+            - '*.tsx'
+            - '*.json'
   lint-test-build:
     name: '[ci|lint-test-build]'
-    runs-on: 'ubuntu-18.04'
+    runs-on: 'ubuntu-latest'
+    needs: changes
+    if: ${{ needs.changes.outputs.ts == 'true' }}
     steps:
       - name: '[checkout] ${{ github.repository }} project'
         uses: 'actions/checkout@v2'