polyfill#

• Type: 'entry' | 'usage' | 'off'
• Default: 'usage'

Through the output.polyfill option, you can control the injection mode of the polyfills.

Optional Value#

usage#

When output.polyfill is configured as 'usage', Rsbuild will inject the polyfills based on the APIs used in each file.

export default {
  output: {
    polyfill: 'usage',
  },
};

entry#

When output.polyfill is configured as 'entry', Rsbuild will inject the polyfills in each entry file.

export default {
  output: {
    polyfill: 'entry',
  },
};

off#

When output.polyfill is configured as 'off', Rsbuild will not inject the polyfills, and developers need to ensure code compatibility themselves.

export default {
  output: {
    polyfill: 'off',
  },
};

Please refer to the Polyfill Mode for more details.