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tests/cases/conformance/jsx/file.tsx(17,39): error TS2842: 'string' is an unused renaming of 'y1'. Did you intend to use it as a type annotation?
==== tests/cases/conformance/jsx/file.tsx (1 errors) ====
import React = require('react')
declare function OneThing(k: {yxx: string}): JSX.Element;
declare function OneThing(k: {yxx1: string, children: string}): JSX.Element;
declare function OneThing(l: {yy: number, yy1: string}): JSX.Element;
declare function OneThing(l: {yy: number, yy1: string, yy2: boolean}): JSX.Element;
declare function OneThing(l1: {data: string, "data-prop": boolean}): JSX.Element;
// OK
const c1 = <OneThing yxx='ok' />
const c2 = <OneThing yy={100} yy1="hello"/>
const c3 = <OneThing yxx="hello" ignore-prop />
const c4 = <OneThing data="hello" data-prop />
const c5 = <OneThing yxx1='ok'>Hello</OneThing>
declare function TestingOneThing({y1: string}): JSX.Element;
~~~~~~
!!! error TS2842: 'string' is an unused renaming of 'y1'. Did you intend to use it as a type annotation?
!!! related TS2843 tests/cases/conformance/jsx/file.tsx:17:46: We can only write a type for 'y1' by adding a type for the entire parameter here.
declare function TestingOneThing(j: {"extra-data": string, yy?: string}): JSX.Element;
declare function TestingOneThing(n: {yy: number, direction?: number}): JSX.Element;
declare function TestingOneThing(n: {yy: string, name: string}): JSX.Element;
// OK
const d1 = <TestingOneThing y1 extra-data />;
const d2 = <TestingOneThing extra-data="hello" />;
const d3 = <TestingOneThing extra-data="hello" yy="hihi" />;
const d4 = <TestingOneThing extra-data="hello" yy={9} direction={10} />;
const d5 = <TestingOneThing extra-data="hello" yy="hello" name="Bob" />;
declare function TestingOptional(a: {y1?: string, y2?: number}): JSX.Element;
declare function TestingOptional(a: {y1: boolean, y2?: number, y3: boolean}): JSX.Element;
// OK
const e1 = <TestingOptional />
const e3 = <TestingOptional y1="hello"/>
const e4 = <TestingOptional y1="hello" y2={1000} />
const e5 = <TestingOptional y1 y3/>
const e6 = <TestingOptional y1 y3 y2={10} />
const e2 = <TestingOptional y1 y3 extra-prop/>
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