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Resolve JSON files as modules in TypeScript

May 2, 2022  ‐ 1 min read

Using JSON files and its contents is a useful practice in Node.js projects.

TypeScript version 2.9 (which released in 2018) allows for JSON file imports with the introduction of the resolveJsonModule compiler option, this provides type-safety and allows for handy autocompletion using intellisense in your editor.

If you would try to import a JSON file you can expect an error message like: "Cannot find module './package.json'. Consider using '--resolveJsonModule' to import module with '.json' extension."

As the error message suggest the option you want to use is resolveJsonModule. You can set this compiler option to true in the tsconfig.json file.

  "include": ["src/**/*.json"],
  "compilerOptions": {
    "resolveJsonModule": true

Optionally you need to adjust the "include" property of your JSON as well, as shown in the example above.

With that being done, you should be able to import a JSON file as a JavaScript module.

import package from "./package.json";