Error TS2349: The function cannot be called as it does not have a defined call signature. The type 'typeof renderIf' does not have any compatible call signatures

Based on the starter template found at https://github.com/react-native-training/reactxp-starter, I am just starting out with TypeScript!

The issue seems to be related to the type in the renderIf function. I'm unsure where exactly the type should be specified for the renderIf function to work properly. Any insights or guidance on this matter would be greatly appreciated! Especially since ReactXP serves as a thin layer over React Native.

Thank you!

/*
* This file showcases a simple ReactXP application.
*/

import RX = require('reactxp');
import renderIf = require('./util/renderIf');
//import { VirtualListView, VirtualListViewItemInfo } from 'virtuallistview';

const styles = {
    // Styles definitions here...
};

// Component interfaces defined here...

class App extends RX.Component<QuestionProps, QuestionState> {
    // Constructor and other methods implementation...

    render(): JSX.Element | null {
        // Render method code here...
    }
}

export = App;

Error Message:

ERROR in [at-loader] ./src/App.tsx:154:18
    TS2349: Cannot invoke an expression whose type lacks a call signature. Type 'typeof "/Users/app/src/util/renderIf"' has no compatible call signatures.

renderIf.ts

export default function renderIf(condition: any, content: any) {
    if (condition) {
        return content;
    } else {
        return null;
    }
}

Answer №1

It's so unbelievable, the reason for the issue was that I forgot to include .default when using renderIf. However, I couldn't use

import renderIf = require('./util/renderIf').default;
and had to resort to
import renderIf = require('./util/renderIf');
, which seemed odd.

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