chore: install npm packages for cpp grammar only

Author: itsaky

.github/workflows/build.yml

@@ -65,11 +65,7 @@ jobs:
         run: $ATS_SUDO $ATS_APT_UPDATE && $ATS_SUDO $ATS_APT_UPGRADE && $ATS_SUDO $ATS_APT_INSTALL $ATS_APT_DEPS
       - name: Install Node packages
         run: |
-          for pck in $(find grammars -maxdepth 2 -name "package.json"); do
-            cd $(dirname $pck)
-            npm install
-            cd -
-          done
+          cd grammars/cpp && npm install && cd -
       - name: Restore cache
         uses: actions/cache@v4
         with:
@@ -119,11 +115,7 @@ jobs:
         run: $ATS_SUDO $ATS_APT_UPDATE && $ATS_SUDO $ATS_APT_UPGRADE && $ATS_SUDO $ATS_APT_INSTALL $ATS_APT_DEPS
       - name: Install Node packages
         run: |
-          for pck in $(find grammars -maxdepth 2 -name "package.json"); do
-            cd $(dirname $pck)
-            npm install
-            cd -
-          done
+          cd grammars/cpp && npm install && cd -
       - name: Restore cache
         uses: actions/cache@v4
         with:
@@ -171,11 +163,7 @@ jobs:
         run: $ATS_SUDO $ATS_APT_UPDATE && $ATS_SUDO $ATS_APT_UPGRADE && $ATS_SUDO $ATS_APT_INSTALL $ATS_APT_DEPS
       - name: Install Node packages
         run: |
-          for pck in $(find grammars -maxdepth 2 -name "package.json"); do
-            cd $(dirname $pck)
-            npm install
-            cd -
-          done
+          cd grammars/cpp && npm install && cd -
       - name: Restore cache
         uses: actions/cache@v4
         with:
@@ -233,11 +221,7 @@ jobs:
         run: $ATS_SUDO $ATS_APT_UPDATE && $ATS_SUDO $ATS_APT_UPGRADE && $ATS_SUDO $ATS_APT_INSTALL $ATS_APT_DEPS
       - name: Install Node packages
         run: |
-          for pck in $(find grammars -maxdepth 2 -name "package.json"); do
-            cd $(dirname $pck)
-            npm install
-            cd -
-          done
+          cd grammars/cpp && npm install && cd -
       - name: Restore cache
         uses: actions/cache@v4
         with:

README.md

@@ -75,16 +75,12 @@ git clone --recurse-submodules https://github.com/AndroidIDEOfficial/android-tre
 
 ### Install grammar dependencies
 
-You might need to install the Node packages required by the grammars. To do so, you may do
-something like the following:
+You might need to install the Node packages required by the grammars. For example, the `cpp` grammar
+requires you to install the packages:
 
 ```bash
 # from the root directory of this project
-for pck in $(find grammars -maxdepth 2 -name "package.json" -type f); do
-  cd $(dirname $pck)
-  npm install
-  cd -
-done 
+cd grammars/cpp && npm install && cd -
 ```
 
 ### Build