Tips for incorporating absent type definition files into your typescript setup

This is similar to the issue discussed in How can I enable modules without .d.ts type definitions?

Although VS Code stopped showing errors after adding those files, attempting to compile using gulp still resulted in an error message on the console.

(Interestingly, today I noticed that VS code stopped displaying most of the errors)

Inside ./src/dts/, I have:

dyo.d.ts


declare module 'dyo';

tsconfig.json


{
  "compilerOptions": {
    "lib": ["dom", "es2016", "es2017.object"],
    "rootDir": "src",
    "target": "es5",
    "outDir": "build",
    "moduleResolution": "node",
    //"noImplicitAny": false,
    "removeComments": true,
    "typeRoots": [
      "src/dts",
      "node_modules/@types"
    ]
  },
  "exclude": [
    "node_modules"
  ],
  "files": [
    "./src/dts/dyo.d.ts",
    "./src/dts/randomseed.d.ts"
  ]
}

The error received is:

error TS7016: Could not find a declaration file for module 'dyo'. '/mediatest/node_modules/dyo/dist/dyo.umd.js' implicitly has an 'any' type. Try npm install @types/dyo if it exists or add a new declaration (.d.ts) file containing declare module 'dyo';

I am importing the modules like this:

import { h, render } from 'dyo'

import * as _rng from 'random-seed'

The second module is also not functioning properly.

A previous suggestion was to include the files property and another source recommended including the typeRoots property, but neither solution seems to be resolving the issue.

Apologies for the multiple inquiries related to TypeScript on Stack Overflow.

Answer №1

If you're looking to make a change, I recommend transitioning to utilizing the types property over typeRoots and implementing an include approach instead of relying on files.

{
  "compilerOptions": {
    "lib": ["dom", "es2016", "es2017.object"],
    "rootDir": "src",
    "target": "es5",
    "outDir": "build",
    "moduleResolution": "node",
    "removeComments": true,
    "types": [
      "node"
    ]
  },
  "include": [
    "**/*.ts"
  ]
}

I've specifically added the node type considering your use of node module resolution; ensure you have installed @types/node if not already done.

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