Why does WebStorm fail to recognize bigint type when using TSC 3.4.x?

Currently, I am working on the models section of my application and considering switching from using number to bigint for id types. However, despite knowing that this is supported from TSC 3.2.x, WebStorm is indicating an error with Unresolved type bigint. Can anyone explain why this is happening and how it can be resolved?

Also, I'm curious if bigint is JSON-convertible by default?

UPDATE: Information on Webstorm version and tsconfig.json

I am currently using WebStorm version 2019.1.3

and my tsconfig.json file is as follows:

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "module": "esnext",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "importHelpers": true,
    "target": "es2015",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2018",
      "dom"
    ]
  }
}

https://i.stack.imgur.com/XeLEC.png

typescriptwebstorm

Answer №1

There seems to be a bug in WebStorm, please keep an eye on Web-39502 for any updates. As a temporary solution, you can add esnext to the "lib": []:

 "lib": [
      "es2018",
      "esnext",
      "dom"
    ]

Alternatively, you can enable the TypeScript compiler service in Settings | Languages & Frameworks | TypeScript.

It's important to note that regardless of the option chosen, you must modify the target to esnext or a higher version - BigInt literals are not supported in lower ESNext versions.

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