microsoft / microsoft/TypeScript

Specialize JSX error messages for missing properties

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#39,749 0 comments 0 reactions 1 assignee View on GitHub

@weswigham is already working on this.

Since Jul 25, 2020.

Domain: Error Messages Domain: JSX/TSX Effort: Moderate Experience Enhancement Help Wanted Rescheduled
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Description

import React from "react";

function Foo(props: { count: number }) {
    return <div>{props.count}</div>;
}

<Foo />

function Bar(props: { a: any, b: any }) {
    return <div />;
}

<Bar />

function Baz(props: { a: any, b: any, c: any, d: any, e: any, f: any }) {
    return <div />
}

<Baz />

Current

Property 'count' is missing in type '{}' but required in type '{ count: number; }'.
Type '{}' is missing the following properties from type '{ a: any; b: any; }': a, b
Type '{}' is missing the following properties from type '{ a: any; b: any; c: any; d: any; e: any; f: any; }': a, b, c, d, and 2 more.

Proposed

The 'count' attribute is missing, but is required for this 'Foo' tag.
This 'Bar' tag is missing the following attributes: a, b.
This 'Baz' tag is missing the following attributes: a, b, c, d, and 2 more.

Playground Link

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