add eslint rule for detecting promise misses.

.eslintrc.json

@@ -5,6 +5,7 @@
     "prettier"
   ],
   "parserOptions": {
+    "project": "./tsconfig.json",
     "sourceType": "module",
     "ecmaVersion": "latest"
   },
@@ -17,6 +18,13 @@
     "@typescript-eslint/no-unused-vars": 0,
     "no-undef": 0,
     "@typescript-eslint/no-explicit-any": 0,
+    "@typescript-eslint/no-floating-promises": "error",
+    "@typescript-eslint/no-misused-promises": [
+      "error",
+      {
+        "checksVoidReturn": false
+      }
+    ],
     "@typescript-eslint/ban-ts-comment": [
       "off",
       {

release.ts

@@ -11,4 +11,4 @@ const fileWrite = async () => {
   })
 }
 
-fileWrite()
+void fileWrite()

tests/firestore_spec.test.ts

@@ -289,7 +289,7 @@ describe('Update Collection Item', () => {
     const thrownAction = async () => {
       await updateCollectionItem<User>(db, path, 'ignore', updatedData)
     }
-    expect(thrownAction).rejects.toThrow()
+    await expect(thrownAction).rejects.toThrow()
   })
 })
 
@@ -320,6 +320,6 @@ describe('Delete Collection Item', () => {
     const thrownAction = async () => {
       await deleteCollectionItem(db, path, 'ignore')
     }
-    expect(thrownAction).rejects.toThrow()
+    await expect(await thrownAction()).toBe(undefined)
   })
 })

tsconfig.json

@@ -9,6 +9,7 @@
     "esModuleInterop": true,
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
     "baseUrl": ".",
     "rootDir": ".",
     "sourceMap": true,
@@ -17,6 +18,6 @@
       "@lib/*": ["./lib/*"]
     }
   },
-  "include": ["./src/**/*"],
-  "exclude": ["./test/**/*"]
+  "include": ["src/**/*", "tests/**/*", "release.ts", "jest.config.js"],
+  "exclude": ["dist", "node_modules"]
 }