typescript cannot find module js file code example

Example 1: Cannot find module 'typescript'

# NPM Installation Method
npm install --global typescript # Global installation
npm install --save-dev typescript # Local installation

#Yarn Installation Method
yarn global add typescript # Global installation
yarn add --dev typescript # Local installation

Example 2: cannot find module typescript

npm install -g typescript

Example 3: error TS2307: Cannot find module 'path' or its corresponding type declarations.

go to 'tsconfig.app.json' and add "node" to types:


/* To learn more about this file see: https://angular.io/config/tsconfig. */
{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/app",
    "types": ["node"]   <------------ ADD "node" HERE
  },
  "files": [
    "src/main.ts",
    "src/polyfills.ts"
  ],
  "include": [
    "src/**/*.d.ts"
  ]
}