rsbuild to big bundle size

[sysmat]

I start with vite and build with vite is very small, compare to rsbuild:

• vite build

dist/index.html                  0.43 kB │ gzip: 0.29 kB
dist/assets/index-rlIeKKZD.css   8.45 kB │ gzip: 2.38 kB
dist/assets/index-BrfRUyn6.js   23.97 kB │ gzip: 9.13 kB

• rsbuild

dist\index.html                            0.53 kB    0.31 kB
dist\static\css\index.4970f880.css         8.2 kB     2.4 kB
dist\static\js\index.e128db22.js           9.5 kB     3.8 kB
dist\static\js\830.4a5c0870.js             17.3 kB    6.5 kB
dist\static\js\lib-polyfill.e5898542.js    26.1 kB    9.2 kB

[chenjiahan]

Hi, you can set output.polyfill to 'off' to remove the polyfill, Vite does not inject polyfills for you.

Upgrade to 1.0.0-alpha.0 will also be helpful to reduce the output size, as we enabled the module concatenate optimization.

[sysmat]

on alpha

File                                       Size       Gzipped    
 dist\static\js\lib-polyfill.2a8556d4.js    28.0 kB    9.2 kB
 dist\static\js\688.6e16579b.js             17.7 kB    6.6 kB
 dist\static\js\index.cde9763a.js           10.7 kB    3.9 kB
 dist\index.html                            0.57 kB    0.33 kB
 dist\static\css\index.1c6b3d07.css         0.06 kB    0.06 kB

[sysmat]

• of polyfill

 File                                  Size       Gzipped    
  dist\static\js\688.13ddf2a2.js        17.7 kB    6.6 kB
  dist\static\js\index.4231cb04.js      10.3 kB    3.8 kB
  dist\index.html                       0.50 kB    0.30 kB
  dist\static\css\index.1c6b3d07.css    0.06 kB    0.06 kB

[chenjiahan]

• Vite: 23.97+8.45+0.43 = 32.85
• Rsbuild: 17.7+10.3+0.5+0.06 = 28.56

[chenjiahan]

We are considering disable the polyfill injection by default, see the vote on Twitter: https://x.com/rspack_dev/status/1808439138439274780