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tests/cases/conformance/jsx/file.tsx(9,2): error TS2322: Type '{ "data-foo": number; }' is not assignable to type '{ "data-foo"?: string; }'.
Types of property '"data-foo"' are incompatible.
Type 'number' is not assignable to type 'string'.
==== tests/cases/conformance/jsx/file.tsx (1 errors) ====
declare module JSX {
interface Element { }
interface IntrinsicElements {
test1: { "data-foo"?: string };
}
}
// Error
<test1 data-foo={32} />;
~~~~~
!!! error TS2322: Type '{ "data-foo": number; }' is not assignable to type '{ "data-foo"?: string; }'.
!!! error TS2322: Types of property '"data-foo"' are incompatible.
!!! error TS2322: Type 'number' is not assignable to type 'string'.
// OK
<test1 data-foo={'32'} />;
<test1 data-bar={'32'} />;
<test1 data-bar={32} />;
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