sprites 逆向生成 svg 文件

const fs = require('fs-extra')
const { parse } = require('svg-parser')

fs.readFile('sprites.svg', 'utf-8', (err, contents) => {
  if (err) return console.error(err)

  const parsed = parse(contents)
  const symbols = parsed.children[0].children

  symbols.forEach((symbol) => {
    const name = symbol.properties.id

    let paths = ''
    symbol.children.forEach(path => {
      paths += `<path d="${path.properties.d}" />`
    })

    const svg = '<?xml version="1.0" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">'
      + `<svg class='icon' viewBox='${symbol.properties.viewBox}' version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">`
      +  paths
      + '</svg>'

    fs.outputFile(`icons/${name}.svg`, svg, (err) => {
      if (err) return console.error(err)

      console.log(`${name}.svg`)
    })
  })
})