v12 (#5712)

Co-authored-by: MeiMei <30769358+mei23@users.noreply.github.com>
Co-authored-by: Satsuki Yanagi <17376330+u1-liquid@users.noreply.github.com>

src/client/tsconfig.json

@@ -0,0 +1,30 @@
+{
+  "compilerOptions": {
+    "allowJs": true,
+    "noEmitOnError": false,
+    "noImplicitAny": false,
+    "noImplicitReturns": true,
+    "noUnusedParameters": false,
+    "noUnusedLocals": true,
+    "noFallthroughCasesInSwitch": true,
+    "declaration": false,
+    "sourceMap": false,
+    "target": "es2017",
+    "module": "esnext",
+    "moduleResolution": "node",
+    "removeComments": false,
+    "noLib": false,
+    "strict": true,
+    "strictNullChecks": false,
+    "experimentalDecorators": true,
+    "resolveJsonModule": true,
+    "typeRoots": [
+      "node_modules/@types",
+      "src/@types"
+    ]
+  },
+  "compileOnSave": false,
+  "include": [
+    "./**/*.ts"
+  ]
+}