code: async function getCodepointsMap(filepath) {
    const content = await fsAsync.readFile(filepath)
    let codepointsMap
  
    try {
      codepointsMap = JSON.parse(content)
    } catch (e) {
      throw new ValidationError('Codepoints map is invalid JSON')
    }
  
    for (let propName in codepointsMap) {
      codepointsMap[propName] = Number.parseInt(codepointsMap[propName])
    }
  
    return codepointsMap
  }
docs: Correctly parse codepoints map
  
  @param  {Object} options
  @return {void}