Do not use spread operator

[polRk]

https://github.com/aelbore/esbuild-jest/blob/daa5847b3b382d9ddf6cc26e60ad949d202c4461/src/index.ts#L55

` JSON.parse('{"sourcesContent": {}}', function(k, v) { if (k === 'sourcesContent') return null;

return v; }); `

[markkahn]

why not?