require('oxc-transform').isolatedDeclaration('hello.ts', `
    export abstract class Foo {
        abstract foo(): void;
        bar(): void {}
        baz(): void {}
    }
`);
{
  sourceText: 'export declare abstract class Foo {\n' +
    '\tabstract foo(): void;\n' +
    '\tbaz(): void;\n' +
    '}\n',
  errors: []
}