Why next js 9.4.2 creating so many smaller chunks?

[rahul3103]

+ First Load JS shared by all                                                             339 kB
  ├ static/pages/_app.js                                                                  72.4 kB
  ├ chunks/1759e8925924f61068b83578595c52bf0cee18a5.91d0f3.js                             6.04 kB
  ├ chunks/215cde4e05d1dcc36bb3f370f98d58dc19b0eb96.35b6ab.js                             5.01 kB
  ├ chunks/273064537be421e3cd9422238a3b799d942ba2a4.007cf2.js                             17.3 kB
  ├ chunks/3895f1d7a1009c3cfa40a31c8cb333659c6fb99b.ecab3f.js                             7.2 kB
  ├ chunks/398d428a0c3cae2d9b0c057b63b09cd4706d4768.1f5eb4.js                             5.43 kB
  ├ chunks/3c907fa525cb2434124576de9ff03fd2185c2501.d715a0.js                             3.51 kB
  ├ chunks/3ce538aa603bcc4c460028f25c8cd7f96209cd4e.7cd8c5.js                             1.95 kB
  ├ chunks/41d8d2a066292a3ba6de59c03f3fa88ce65c2eea.d4d39a.js                             3.42 kB
  ├ chunks/45ebe33300ca6905e9379694d5838af8974eaa32.031351.js                             6.43 kB
  ├ chunks/491a973ed56af3992fbb328e7503677a0b60e00a.e704e9.js                             7.77 kB
  ├ chunks/5c117770ce4e8887d3416678763ccb34bb83e6eb.768b91.js                             4.48 kB
  ├ chunks/5fa4d8a1f65db49548589504154651ea59e9ade3.38a4ca.js                             3.54 kB
  ├ chunks/75897bca0a0591bf90bdafc474cef4af75859ae6.6cd291.js                             18.1 kB
  ├ chunks/986d7365dabf79b645712c9ecd3ef208202e681c.583425.js                             3 kB
  ├ chunks/9fda6a596ebfa6a9a26df096eb68998ddf0a1351.2f90f0.js                             4.78 kB
  ├ chunks/c0d53ec4.4db98f.js                                                             28.6 kB
  ├ chunks/commons.9c0f19.js                                                              26.2 kB
  ├ chunks/d098a116d03279c64923b349e452538676ae9a34.e35b60.js                             4.47 kB
  ├ chunks/d4d67314f1a66080ae20e1ccc0a4d0f20a51b2fa.2b8743.js                             4.82 kB
  ├ chunks/d63a1932e2daba4fd2ff858a0ca8595e40c32ebe.39647c.js                             18.5 kB
  ├ chunks/e4c3c9db9d76afd1ba7a0254979c75df1d18b991.1e8351.js                             38.1 kB
  ├ chunks/framework.619a4f.js                                                            40.3 kB
  ├ runtime/main.eb00c7.js                                                                6.6 kB
  ├ runtime/webpack.c21266.js

[timneutkens]

https://nextjs.org/blog/next-9-2#improved-code-splitting-strategy

[rahul3103]

Thanks