GraphQL and codegen integration in watch mode not work

[awxalbert]

What version of Turborepo are you using?

1.5.4

What package manager are you using / does the bug impact?

Yarn v1

What operating system are you using?

Mac

Describe the Bug

Currently I'm using Turborepo to develop a GraphQL based app while I meet some problems when achieving the following three goals

• execute GraphQL code generator in watch mode when GraphQL schema change
• use nodemon to reload Node.js server when server code change

Here's my turbo.json file

{
  "$schema": "https://turborepo.org/schema.json",
  "pipeline": {
    "dev": {
      "dependsOn": ["generate:watch"],
      "cache": false
    },
    "generate:watch": {
      "cache": false
    },
    "generate": {
      "cache": false
    }
  }
}

Here's my server's package.json file

{
  "name": "server",
  "version": "0.0.0",
  "main": "index.js",
  "license": "MIT",
  "engines": {
    "node": ">=14"
  },
  "scripts": {
    "dev": "nodemon --watch src --ext ts,json -r dotenv/config -r tsconfig-paths/register src/index.ts",
    "generate": "graphql-codegen",
    "generate:watch": "yarn generate --watch"
  },
  "dependencies": {
    "apollo-server": "^3.10.2",
    "graphql": "^16.5.0"
  },
  "devDependencies": {
    "@graphql-codegen/add": "^3.2.0",
    "@graphql-codegen/cli": "^2.9.1",
    "@graphql-codegen/typescript": "^2.7.2",
    "@graphql-codegen/typescript-resolvers": "^2.7.2",
    "@types/node": "^14.18.0",
    "dotenv": "^16.0.1",
    "nodemon": "^2.0.19",
    "rimraf": "^3.0.2",
    "tsc-alias": "^1.7.0",
    "ts-node": "^10.9.1",
    "tsconfig-paths": "^4.1.0",
    "typescript": "^4.7.4"
  }
}

Since the generate job should run before the dev job, so I use dependsOn. When I run turbo run dev --parallel, the generate job just work as expected, while the dev job doesn't run at all, the first job somehow blocks the second job, have no idea what's wrong.

Expected Behavior

The dev job can also run, or Turborepo can have watch mode as mentioned in the issue.

To Reproduce

Git clone this demo, install dependencies and run yarn dev

[chris-olszewski]

Hello! Technically this is expected behavior since you defined dev to depend on generate:watch so dev won't get run until the generate:watch process exits.

I'm closing this as I believe the request will be covered by the closing of #986. Feel free to reopen if you feel this issue requires a different solution.

[awxalbert]

@chris-olszewski thanks for the quick response, is there a concrete schedule or plan of the watch mode? I'm pretty sure a lot of users are expecting this feature.

[chris-olszewski]

We don't have a concrete schedule, but we have just started to sketch out how this could work. We'll communicate more on the original issue or an RFC once we have a concrete proposal.