Could not find a declaration file for module './vue-apollo'

[sneko]

Hi,

I don't understand why but when I'm trying to serve the project I get:

ERROR in E:/meta-front/app/src/main.ts
6:32 Could not find a declaration file for module './vue-apollo'. 'E:/meta-front/app/src/vue-apollo.js' implicitly has an 'any' type.
    4 | import store from './store';
    5 | import './registerServiceWorker';
  > 6 | import { apolloProvider } from './vue-apollo'
      |                                ^
    7 |
    8 | Vue.config.productionTip = false;
    9 |
Version: typescript 2.8.3, tslint 5.10.0

That's really weird since you add TypeScript support in Decembrer #160 and that I checked types were ./node_modules/vue-apollo/types/

Do you have any idea to help me please 😃 ?

[leovanhaaren]

It's because the vue-apollo file probably isn't a .ts file but a .js file. (and noExplicitAny is enabled)

[sneko]

@leovanhaaren I don't understand, what do am I supposed to do?

I tried to set "no-explicit-any" to false/true but it doesn't change anything 😢

[sneko]

It was on my side, because of ./vue-apollo has been generated in JavaScript.

To avoid the issue I just replace it by the standard require():

const apolloProvider = require('./vue-apollo');
// import { apolloProvider } from './vue-apollo'

I also tried to convert apollo.js and vue-apollo.js into .ts files but several of their dependencies were not exporting the types declarations so it was much easier to just use require().

Thanks

[maksnester]

I have this issue during usage of vue ui cli tool. I just built generic vue app based on TS and then installed vue-cli-plugin-apollo -> build failed with the mentioned error.

$ vue --version
3.2.2

vue config

module.exports = {
  lintOnSave: false,

  pluginOptions: {
    apollo: {
      enableMocks: true,
      enableEngine: true
    }
  }
}

default tsconfig

{
  "compilerOptions": {
    "target": "esnext",
    "module": "esnext",
    "strict": true,
    "jsx": "preserve",
    "importHelpers": true,
    "moduleResolution": "node",
    "experimentalDecorators": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "baseUrl": ".",
    "types": [
      "webpack-env",
      "jest"
    ],
    "paths": {
      "@/*": [
        "src/*"
      ]
    },
    "lib": [
      "esnext",
      "dom",
      "dom.iterable",
      "scripthost"
    ]
  },
  "include": [
    "src/**/*.ts",
    "src/**/*.tsx",
    "src/**/*.vue",
    "tests/**/*.ts",
    "tests/**/*.tsx"
  ],
  "exclude": [
    "node_modules"
  ]
}

Generated dependencies:

  "dependencies": {
    "graphql-type-json": "^0.2.1",
    "lowdb": "^1.0.0",
    "mkdirp": "^0.5.1",
    "shortid": "^2.2.8",
    "vue": "^2.5.21",
    "vue-apollo": "^3.0.0-beta.11",
    "vue-class-component": "^6.0.0",
    "vue-property-decorator": "^7.0.0",
    "vue-router": "^3.0.1",
    "vuex": "^3.0.1"
  },
  "devDependencies": {
    "@types/jest": "^23.1.4",
    "@vue/cli-plugin-babel": "^3.2.0",
    "@vue/cli-plugin-e2e-nightwatch": "^3.2.0",
    "@vue/cli-plugin-typescript": "^3.2.0",
    "@vue/cli-plugin-unit-jest": "^3.2.0",
    "@vue/cli-service": "^3.2.0",
    "@vue/test-utils": "^1.0.0-beta.20",
    "babel-core": "7.0.0-bridge.0",
    "graphql-tag": "^2.9.0",
    "lint-staged": "^8.1.0",
    "stylus": "^0.54.5",
    "stylus-loader": "^3.0.2",
    "ts-jest": "^23.0.0",
    "typescript": "^3.0.0",
    "vue-cli-plugin-apollo": "^0.19.1",
    "vue-template-compiler": "^2.5.21"
  },

Works only with these both settings in ts config:

    "allowJs": true,
    "strict": false,

[jfcieslak]

{
	"compilerOptions": {
		//...
		"types": [
			"vue-cli-plugin-apollo/types"
		],
	},
}

Try adding the types in your compiler options, this should do.