refactor: migrate to vitest

.github/workflows/continuous-integration.yml

@@ -59,4 +59,4 @@ jobs:
       - name: Install
         run: yarn install --immutable
       - name: Test
-        run: yarn test --forceExit
+        run: yarn test

package.json

@@ -91,7 +91,7 @@
     "lint:prettier": "prettier -c .",
     "lint": "yarn lint:eslint && yarn lint:prettier",
     "type-check": "tsc --noEmit",
-    "test": "jest",
+    "test": "vitest",
     "bench:start-servers": "NODE_ENV=production node benchmark/servers/index.mjs",
     "bench": "k6 run benchmark/k6.mjs",
     "build:esm": "tsc -b tsconfig.esm.json && node scripts/esm-post-process.mjs",
@@ -107,35 +107,24 @@
     "graphql": ">=0.11 <=16"
   },
   "devDependencies": {
-    "@babel/core": "^7.24.4",
-    "@babel/plugin-proposal-class-properties": "^7.18.6",
-    "@babel/plugin-proposal-nullish-coalescing-operator": "^7.18.6",
-    "@babel/plugin-proposal-object-rest-spread": "^7.20.7",
-    "@babel/plugin-proposal-optional-chaining": "^7.21.0",
-    "@babel/preset-env": "^7.24.4",
-    "@babel/preset-typescript": "^7.24.1",
     "@fastify/websocket": "^9.0.0",
     "@rollup/plugin-terser": "^0.4.4",
     "@rollup/plugin-typescript": "^11.1.6",
     "@semantic-release/changelog": "^6.0.3",
     "@semantic-release/git": "^10.0.1",
     "@types/eslint": "^8.56.10",
     "@types/glob": "^8.1.0",
-    "@types/jest": "^29.5.12",
     "@types/ws": "^8.5.10",
     "@typescript-eslint/eslint-plugin": "^7.7.0",
     "@typescript-eslint/parser": "^7.7.0",
-    "babel-jest": "^29.7.0",
     "bun-types": "^1.1.4",
     "eslint": "^8.57.0",
     "eslint-config-prettier": "^9.1.0",
     "fastify": "^4.26.2",
     "fastify-websocket": "4.2.2",
     "glob": "^10.3.12",
     "graphql": "^16.8.1",
-    "jest": "^29.7.0",
-    "jest-environment-jsdom": "^29.7.0",
-    "jest-jasmine2": "^29.7.0",
+    "jsdom": "^25.0.1",
     "prettier": "^3.2.5",
     "replacestream": "^4.0.3",
     "rollup": "^4.14.3",
@@ -146,6 +135,7 @@
     "typedoc-plugin-markdown": "^3.17.1",
     "typescript": "^5.4.5",
     "uWebSockets.js": "uNetworking/uWebSockets.js#v20.43.0",
+    "vitest": "^2.1.8",
     "ws": "8.12.0",
     "ws7": "npm:ws@^7.5.9"
   },

tests/__snapshots__/client.test.ts.snap

@@ -0,0 +1,5 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`should report close error even if complete message followed 1`] = `""error" message expects the 'payload' property to be an array of GraphQL errors, but got "malformed""`;
+
+exports[`should report close error even if complete message followed 2`] = `""error" message expects the 'payload' property to be an array of GraphQL errors, but got "malformed""`;

tests/__snapshots__/common.test.ts.snap

@@ -0,0 +1,91 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`should report invalid message "" with descriptive error 1`] = `[Error: Message is expected to be an object, but got string]`;
+
+exports[`should report invalid message %j with descriptive error 1`] = `[Error: Message is expected to be an object, but got array]`;
+
+exports[`should report invalid message {"id":"","type":"complete"} with descriptive error 1`] = `[Error: "complete" message requires a non-empty 'id' property]`;
+
+exports[`should report invalid message {"id":"","type":"error"} with descriptive error 1`] = `[Error: "error" message requires a non-empty 'id' property]`;
+
+exports[`should report invalid message {"id":"","type":"next"} with descriptive error 1`] = `[Error: "next" message requires a non-empty 'id' property]`;
+
+exports[`should report invalid message {"id":"","type":"subscribe"} with descriptive error 1`] = `[Error: "subscribe" message requires a non-empty 'id' property]`;
+
+exports[`should report invalid message {"id":"id","type":"error","payload":""} with descriptive error 1`] = `[Error: "error" message expects the 'payload' property to be an array of GraphQL errors, but got ""]`;
+
+exports[`should report invalid message {"id":"id","type":"error","payload":[]} with descriptive error 1`] = `[Error: "error" message expects the 'payload' property to be an array of GraphQL errors, but got []]`;
+
+exports[`should report invalid message {"id":"id","type":"error","payload":[{"iam":"invalid"}]} with descriptive error 1`] = `[Error: "error" message expects the 'payload' property to be an array of GraphQL errors, but got [{"iam":"invalid"}]]`;
+
+exports[`should report invalid message {"id":"id","type":"error","payload":{}} with descriptive error 1`] = `[Error: "error" message expects the 'payload' property to be an array of GraphQL errors, but got {}]`;
+
+exports[`should report invalid message {"id":"id","type":"error"} with descriptive error 1`] = `[Error: "error" message expects the 'payload' property to be an array of GraphQL errors, but got undefined]`;
+
+exports[`should report invalid message {"id":"id","type":"next","payload":""} with descriptive error 1`] = `[Error: "next" message expects the 'payload' property to be an object, but got string]`;
+
+exports[`should report invalid message {"id":"id","type":"next"} with descriptive error 1`] = `[Error: "next" message expects the 'payload' property to be an object, but got undefined]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":""} with descriptive error 1`] = `[Error: "subscribe" message expects the 'payload' property to be an object, but got string]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":[]} with descriptive error 1`] = `[Error: "subscribe" message expects the 'payload' property to be an object, but got array]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":{"operationName":{},"query":""}} with descriptive error 1`] = `[Error: "subscribe" message payload expects the 'operationName' property to be a string or nullish or missing, but got object]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":{"operationName":0,"query":""}} with descriptive error 1`] = `[Error: "subscribe" message payload expects the 'operationName' property to be a string or nullish or missing, but got number]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":{"query":"","extensions":""}} with descriptive error 1`] = `[Error: "subscribe" message payload expects the 'extensions' property to be a an object or nullish or missing, but got string]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":{"query":"","extensions":0}} with descriptive error 1`] = `[Error: "subscribe" message payload expects the 'extensions' property to be a an object or nullish or missing, but got number]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":{"query":"","variables":""}} with descriptive error 1`] = `[Error: "subscribe" message payload expects the 'variables' property to be a an object or nullish or missing, but got string]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":{"query":{}}} with descriptive error 1`] = `[Error: "subscribe" message payload expects the 'query' property to be a string, but got object]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":{"query":0}} with descriptive error 1`] = `[Error: "subscribe" message payload expects the 'query' property to be a string, but got number]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe","payload":{}} with descriptive error 1`] = `[Error: "subscribe" message payload expects the 'query' property to be a string, but got undefined]`;
+
+exports[`should report invalid message {"id":"id","type":"subscribe"} with descriptive error 1`] = `[Error: "subscribe" message expects the 'payload' property to be an object, but got undefined]`;
+
+exports[`should report invalid message {"id":0,"type":"complete"} with descriptive error 1`] = `[Error: "complete" message expects the 'id' property to be a string, but got number]`;
+
+exports[`should report invalid message {"id":0,"type":"subscribe"} with descriptive error 1`] = `[Error: "subscribe" message expects the 'id' property to be a string, but got number]`;
+
+exports[`should report invalid message {"type":""} with descriptive error 1`] = `[Error: Message is missing the 'type' property]`;
+
+exports[`should report invalid message {"type":"complete"} with descriptive error 1`] = `[Error: "complete" message expects the 'id' property to be a string, but got undefined]`;
+
+exports[`should report invalid message {"type":"connection_ack","payload":""} with descriptive error 1`] = `[Error: "connection_ack" message expects the 'payload' property to be an object or nullish or missing, but got ""]`;
+
+exports[`should report invalid message {"type":"connection_init","payload":""} with descriptive error 1`] = `[Error: "connection_init" message expects the 'payload' property to be an object or nullish or missing, but got ""]`;
+
+exports[`should report invalid message {"type":"connection_init","payload":0} with descriptive error 1`] = `[Error: "connection_init" message expects the 'payload' property to be an object or nullish or missing, but got "0"]`;
+
+exports[`should report invalid message {"type":"error"} with descriptive error 1`] = `[Error: "error" message expects the 'id' property to be a string, but got undefined]`;
+
+exports[`should report invalid message {"type":"next"} with descriptive error 1`] = `[Error: "next" message expects the 'id' property to be a string, but got undefined]`;
+
+exports[`should report invalid message {"type":"next"} with descriptive error 2`] = `[Error: "next" message expects the 'id' property to be a string, but got undefined]`;
+
+exports[`should report invalid message {"type":"nuxt"} with descriptive error 1`] = `[Error: Invalid message 'type' property "nuxt"]`;
+
+exports[`should report invalid message {"type":"ping","payload":0} with descriptive error 1`] = `[Error: "ping" message expects the 'payload' property to be an object or nullish or missing, but got "0"]`;
+
+exports[`should report invalid message {"type":"subscribe"} with descriptive error 1`] = `[Error: "subscribe" message expects the 'id' property to be a string, but got undefined]`;
+
+exports[`should report invalid message {"type":0} with descriptive error 1`] = `[Error: Message is missing the 'type' property]`;
+
+exports[`should report invalid message {} with descriptive error 1`] = `[Error: Message is missing the 'type' property]`;
+
+exports[`should report invalid message {} with descriptive error 2`] = `[Error: Message is missing the 'type' property]`;
+
+exports[`should report invalid message 0 with descriptive error 1`] = `[Error: Message is expected to be an object, but got number]`;
+
+exports[`should report invalid message 9 with descriptive error 1`] = `[Error: Message is expected to be an object, but got number]`;
+
+exports[`should report invalid message undefined with descriptive error 1`] = `[Error: Message is expected to be an object, but got function]`;
+
+exports[`should report invalid message undefined with descriptive error 2`] = `[Error: Message is expected to be an object, but got function]`;
+
+exports[`should report invalid message undefined with descriptive error 3`] = `[Error: Message is expected to be an object, but got function]`;