How to use the header-case.headerCase function in header-case

export const snakeRequest = (data, headers) => {
  for (const [key, value] of Object.entries(headers)) {
    header(value, true)
    if (!['common', 'delete', 'get', 'head', 'post', 'put', 'patch'].includes(key)) {
      delete headers[key]
      headers[ccHeader(key)] = value
    }
  }
  return snake(data)
}
export const camelResponse = (data, headers) => {

$.tap(file => {
      const fileName = path.basename(file.path);
      const className = lowerCase(headerCase(fileName.replace('.js', '')));

      return gulp
        .src(`${DIST_FOLDER}/${fileName}`)
        .pipe(
          $.replace(
            'classNameString',
            `{...props} className={\`${CLASSNAME} ${CLASSNAME}-${className} \${props.className\}\`}`
          )
        )
        .pipe($.replace(/xmlns:xlink=".+?"/g, ``))
        .pipe($.replace(/xlink:href=".+?"/g, ``))
        .pipe($.replace('fill-rule=', 'fillRule='))
        .pipe($.replace('fill-opacity=', 'fillOpacity='))
        .pipe($.prettier())
        .pipe(gulp.dest(DIST_FOLDER))
        .pipe(gulp.dest(LIB_FOLDER));