swc/crates/swc_ecma_parser/tests/tsc/optionalProperties02.ts

// @strictNullChecks: true
// @declaration: true

interface Foo {
    a?: string;
    b: string;
}

<Foo>{ a: undefined };
feat(es): TypeScript 4.2 (#1330) swc_ecma_ast: - Add `is_abstract` to constructor types. swc_ecma_codegen: - Fix codegen of `Bool`. - Implement codegen for abstract constructors. swc_ecma_parser: - Inline tsc parser test suite. - Implement parsing of abstract constructor types. 2021-01-15 13:30:44 +03:00			`// @strictNullChecks: true`
			`// @declaration: true`

			`interface Foo {`
			`a?: string;`
			`b: string;`
			`}`

			`<Foo>{ a: undefined };`