Typescript integration in Next.js

When deploying a Next.js project with TypeScript, sometimes errors occur that do not show up during development. Here is an example of such an error:

13:09:26    Failed to compile.
13:09:26    ./node_modules/next/dist/build/webpack/plugins/pages-manifest-plugin.d.ts:1:34
13:09:26    Type error: Could not find a declaration file for module 'webpack'. '/vercel/36bc1d70/node_modules/webpack/lib/webpack.js' implicitly has an 'any' type.
13:09:26      Try `npm install @types/webpack` if it exists or add a new declaration (.d.ts) file containing `declare module 'webpack';`
13:09:26    [0m[31m[1m>[22m[39m[90m 1 | [39m[36mimport[39m { [33mCompiler[39m[33m,[39m [33mPlugin[39m } from [32m'webpack'[39m[33m;[39m[0m
13:09:26    [0m [90m   | [39m                                 [31m[1m^[22m[39m[0m
13:09:26    [0m [90m 2 | [39m[36mexport[39m declare type [33mPagesManifest[39m [33m=[39m {[0m
13:09:26    [0m [90m 3 | [39m    [page[33m:[39m string][33m:[39m string[33m;[39m[0m
13:09:26    [0m [90m 4 | [39m}[33m;[39m[0m
13:09:26    error Command failed with exit code 1.
13:09:26    info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
13:09:26    Error: Command "yarn run vercel-build" exited with 1
13:09:28    Done with "package.json"
typescriptwebpacknext.jsvercel

Answer №1

To successfully set up the webpack package, download and install the "@types/webpack" module from this link

Answer №2

If you're looking for a straightforward method to incorporate TypeScript into NextJS, here's a handy tip. Following the command 

npx create-next-app your-app-name
, consider utilizing the user-friendly library npx next-to-ts to prevent potential errors.

Answer №3

One way to easily set up @types/webpack is by using the following command:

npm install @types/webpack

When working with NextJS, it relies on Webpack for bundling. Sometimes, issues arise due to incomplete installation of project dependencies. To resolve this, start by installing all packages using the npm i command. If the problem persists, carefully review the package requirements and install them individually.

Be sure to inspect your Package.json file for any typos or hidden characters that may be causing errors.

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