41 lines
860 B
TypeScript
41 lines
860 B
TypeScript
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// @jsx: react
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// @strict: true
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// @esModuleInterop: true
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/// <reference path="/.lib/react16.d.ts" />
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import React from 'react';
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interface PS {
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multi: false
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value: string | undefined
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onChange: (selection: string | undefined) => void
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}
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interface PM {
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multi: true
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value: string[]
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onChange: (selection: string[]) => void
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}
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export function ComponentWithUnion(props: PM | PS) {
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return <h1></h1>;
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}
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// Usage with React tsx
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export function HereIsTheError() {
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return (
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<ComponentWithUnion
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multi={false}
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value={'s'}
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onChange={val => console.log(val)} // <- this throws an error
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/>
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);
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}
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// Usage with pure TypeScript
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ComponentWithUnion({
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multi: false,
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value: 's',
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onChange: val => console.log(val) // <- this works fine
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});
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