What is preventing me from importing moment into my TypeScript React Native project?

Looking to incorporate MomentJS into my ReactNative component with TypeScript. Successfully imported the library's d.ts file from the node_modules directory.

This is how I am importing and utilizing the library:

import * as moment from "moment";
const time = moment();

Although my TypeScript compiles without errors, running the ReactNative app triggers the following error:

https://i.sstatic.net/CTqEI.png

Here's a glimpse into my tsconfig.json file:

{
  "compilerOptions": {
    "target": "es6",
    "moduleResolution": "node",
    "jsx": "react",
    "outDir": "build/",
    "sourceMap": true,
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true
  }
}

Switching the 'target' in tsconfig to es5 causes issues with other modules.

Seems to be a similar issue to this query, but already following the suggested approach from the answer.

typescriptreact-nativemomentjs

Answer №1

Referencing @DavidD's comment in the linked answer:

Take caution when using babel alongside the syntax mentioned above, as babel may interfere with the functionality of the moment() function due to its association with the spec. To resolve this issue, you can include 

"allowSyntheticDefaultImports": true
in your tsconfig.json to avoid errors when using import moment from "moment";.

The main problem arises from the fact that moment exports a function as the default, but when utilizing Babel (such as in React Native), this function gets enclosed within an object by Babel.

It remains uncertain whether TypeScript recognizes this encapsulation or if the momentjs definitions require an update.

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