Try using the pinned version of prettier

.github/workflows/prettier.yml

@@ -10,18 +10,16 @@ jobs:
     steps:
     - name: Check out repo
       uses: actions/checkout@v2
-    - uses: actions/cache@v2
-      name: Configure npm caching
+    - uses: actions/setup-node@v3
       with:
-        path: ~/.npm
-        key: ${{ runner.os }}-npm-${{ hashFiles('**/workflows/prettier.yml') }}
-        restore-keys: |
-          ${{ runner.os }}-npm-
+        node-version: 16
+        cache: 'npm'
+    - run: npm ci
     - name: Run prettier
       run: |-
         npm run prettier-fix
-    - name: Print the diff
+    - name: Print the required changes
       run: git diff; git reset --hard
-    - name: Run prettier
+    - name: Check prettier
       run: |-
         npm run prettier-check

package-lock.json

@@ -0,0 +1,32 @@
+{
+  "name": "stable-diffusion-ui",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "devDependencies": {
+        "prettier": "1.19.1"
+      }
+    },
+    "node_modules/prettier": {
+      "version": "1.19.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.19.1.tgz",
+      "integrity": "sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==",
+      "dev": true,
+      "bin": {
+        "prettier": "bin-prettier.js"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    }
+  },
+  "dependencies": {
+    "prettier": {
+      "version": "1.19.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.19.1.tgz",
+      "integrity": "sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==",
+      "dev": true
+    }
+  }
+}

package.json

@@ -1,9 +1,9 @@
 {
   "scripts": {
-    "prettier-fix": "npx prettier --write \"./**/*.js\" --config .prettierrc.json",
-    "prettier-check": "npx prettier --check \"./**/*.js\" --config .prettierrc.json"
+    "prettier-fix": "npx prettier --write \"./**/*.js\"",
+    "prettier-check": "npx prettier --check \"./**/*.js\""
   },
   "devDependencies": {
-    "prettier": "^1.19.1"
+    "prettier": "1.19.1"
   }
 }