text: function mimeType() {
  	const availables = {
  		csv: 'text/csv',
  		html: 'text/html',
  		txt: 'text/plain',
  		png: 'image/png',
  		jpg: 'image/jpeg',
  		jpeg: 'image/jpeg',
  		svg: 'image/svg+xml',
  		rtf: 'application/rtf',
  		pdf: 'application/pdf',
  		json: 'application/vnd.google-apps.script+json',
  		xlsx: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
  		docx: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
  		pptx: 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
  	};
  
  	const validate = (ext) => {
  		const key = ext.toLowerCase();
  		const mimeType = availables[key];
  		return !!mimeType ? mimeType : false;
  	};
  
  	return {
  		validate,
  		availables,
  	};
  }
  
  module.exports = mimeType();
  