toVSCodeSnippetBody.js

const toVSCodeSnippetBody = string =>
  string
    .split('\n')
    .map(line => {
      const chars = Array.from(line)
      if (chars.length === 0) {
        return '"",'
      }
      let newChars = []
      chars.forEach((char, idx) => {
        if (idx === 0) {
          newChars.push('"')
        }
        if (char === '"') {
          newChars.push('\\')
        }
        newChars.push(char)
        if (chars.length - 1 === idx) {
          newChars.push('"')
          newChars.push(',')
        }
      })
      return newChars.join('')
    })
    .join('\n')