[vim] No completion nor errors

[mogelbrod]

ts-graphql-plugin version: 57d27a0 (latest commit built via npm run compile and then npm linked to global node_modules)
tsserver: 3.0.1 (/usr/local/bin/tsserver)

I'm using youcompleteme to manage tsserver and am successfully getting completion for regular typescript. I don't get anything from this plugin however. The plugin doesn't report any errors, and appears to successfully parse the ./gql-schema.json containing the result of a regular introspection query. After the initial parsing it doesn't log anything else however.

tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "allowJs": true,
    "resolveJsonModule": true,
    "allowSyntheticDefaultImports": true,
    "downlevelIteration": false,
    "experimentalDecorators": true,
    "suppressImplicitAnyIndexErrors": true,
    "lib": [
      "es2015",
      "es2016",
      "es2017",
      "dom"
    ],
    "plugins": [
      {
        "name": "ts-graphql-plugin",
        "schema": "./gql-schema.json",
        "tag": "gql"
      }
    ]
  },
  "include": [
    "app"
  ],
  "exclude": [
    "node_modules"
  ]
}

tsserver logs

Info 16   [17:4:27.426] Enabling plugin ts-graphql-plugin from candidate paths: /usr/local/lib/node_modules/typescript/lib/tsserver.js/../../..
Info 17   [17:4:27.427] Loading ts-graphql-plugin from /usr/local/lib/node_modules/typescript/lib/tsserver.js/../../.. (resolved to /usr/local/lib/node_modules/node_modules)
Info 18   [17:4:28.437] [ts-graphql-plugin] config: {"name":"ts-graphql-plugin","schema":"./gql-schema.json","tag":"gql"}
Info 19   [17:4:28.438] [ts-graphql-plugin] Read schema from {REDACTED}/gql-schema.json
Info 20   [17:4:28.484] [ts-graphql-plugin] Build client schema.
Info 21   [17:4:28.485] Plugin validation succeded
...

Example code

const gql = x => x

// No completion whatsoever when writing the contents below:
console.log(gql`
  query {
    me {
      ...on User {
        name
      }
      ...on 
    }
  }
`)