message: Put build watchers at the same terminal tab. [skip ci]
diff: "problemMatcher": "$tsc-watch",
  "isBackground": true,
  "presentation": {
  - "reveal": "never"
  - },
  - "group": {
  - "kind": "build"
  + "reveal": "never",
  + "group": "buildWatchers"
  },
  + "group": "build",
  "detail": "Watch ./src"
  },
  {
  "problemMatcher": "$tsc-watch",
  "isBackground": true,
  "presentation": {
  - "reveal": "never"
  - },
  - "group": {
  - "kind": "build"
  + "reveal": "never",
  + "group": "buildWatchers"
  },
  + "group": "build",
  "detail": "Watch ./viewer"
  },
  {
  