Remove unused font glyphs from the project during packaging to reduce font file size

Using npm:

npm install rollup-plugin-font-minify --save-dev

If you are using rollup

Create a rollup.config.js configuration file and import the plugin:

// rollup.config.js
import fontmin from 'rollup-plugin-font-minify'

export default {
  input: 'src/index.js',
  output: {
    // ...
  },
  plugins: [fontmin()]
}

If you are using vite

Create a vite.config.js configuration file and import the plugin:

// vite.config.js
import fontmin from 'rollup-plugin-font-minify'

export default {
  plugins: [fontmin()]
}

Type: String
Default: ''

Text to be reserved.
This option can be used in certain scenarios where data obtained by sending a request needs to be displayed on the page and fonts are used.
The reserved font glyphs you specify will be retained during packaging.

Type: (text: string) => string
Default: null

Filter text to keep only what is needed

This is an example: compress only specified characters, e.g. only CJK (CJK Unified Ideographs) characters

function getCJK(str) {
  const reg = /[\u4E00-\u9FA5\u3040-\u30FF\u31F0-\u31FF\uFF00-\uFF9F\u3000-\u303F\uFF01-\uFF0F\uFF1A-\uFF20\uFF3B-\uFF40\uFF5B-\uFF60\uFFE0-\uFFE6]/g
  const cjkChars = str.match(reg)
  return cjkChars ? cjkChars.join('') : ''
}

plugins: [
  fontmin({
    filter(text) {
      return getCJK(text)
    }
  })
]

LICENSE (MIT)