Issue with typings in TypeScript is not being resolved

I have integrated this library into my code

Library Link

I have added typings for it in my project as follows

Typings Link

I have included it in my .ts file like this

import accounting from "accounting";

I can locate the typings under /node_modules/@types/accounting

However, when I attempt to run the project, my webpack displays the following error

./app/javascript/components/helpers.ts
Module not found: Error: Can't resolve 'accounting' in '/Users/nemesises/Documents/GitHub/falco-web/app/javascript/components'
 @ ./app/javascript/components/helpers.ts 1:0-36
 @ ./app/javascript/components/itinerary/scripts/hotel_results.ts
 @ ./app/javascript/components/step1/step1.ts
 @ ./app/javascript/components/step1/index.js
 @ ./app/javascript/packs/step1.js
 @ multi (webpack)-dev-server/client?http://localhost:3035 ./app/javascript/packs/step1.js

Here is the content of my tsconfig.json file

   {
  "compilerOptions": {
    "declaration": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "typeRoots": [
      "./node_modules/@types"
    ],
    "types": [ "jquery", "accounting" ],
    "lib": ["es6", "dom"],
    "allowSyntheticDefaultImports": true,
    "module": "es6",
    "moduleResolution": "node",
    "sourceMap": true,
    "target": "es5"
  },
  "exclude": [
    "**/*.spec.ts",
    "node_modules",
    "vendor",
    "public"
  ],
  "compileOnSave": false
}

How can I resolve this issue?

Answer №1

When incorporating TypeScript into your project, it is essential to not only install the module itself, but also the corresponding types for proper type checking. It is recommended to install the types under devDependencies since they are only needed for development and not at runtime. Make sure to add both the module for runtime usage and the types for TypeScript validation.

npm install accounting
npm install --save-dev @types/accounting

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