swc/crates/swc_ecma_parser/tests/tsc/checkJsxChildrenProperty14.tsx

// @filename: file.tsx
// @jsx: preserve
// @noLib: true
// @skipLibCheck: true
// @libFiles: react.d.ts,lib.d.ts

import React = require('react');

interface Prop {
    a: number,
    b: string,
    children: JSX.Element | JSX.Element[];
}

class Button extends React.Component<any, any> {
    render() {
        return (<div>My Button</div>)
    }
}

function AnotherButton(p: any) {
    return <h1>Just Another Button</h1>;
}

function Comp(p: Prop) {
    return <div>{p.b}</div>;
}

// OK
let k1 = <Comp a={10} b="hi"><></><Button /><AnotherButton /></Comp>;
let k2 = <Comp a={10} b="hi"><><Button /></><AnotherButton /></Comp>;
let k3 = <Comp a={10} b="hi"><><Button /><AnotherButton /></></Comp>;

interface SingleChildProp {
    a: number,
    b: string,
    children: JSX.Element;
}

function SingleChildComp(p: SingleChildProp) {
    return <div>{p.b}</div>;
}

// OK
let k4 = <SingleChildComp a={10} b="hi"><><Button /><AnotherButton /></></SingleChildComp>;

// Error
let k5 = <SingleChildComp a={10} b="hi"><></><Button /><AnotherButton /></SingleChildComp>;