ngx-export-as/fesm2022/ngx-export-as.mjs.map

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{"version":3,"file":"ngx-export-as.mjs","sources":["../../../projects/ngx-export-as/src/lib/export-as.service.ts","../../../projects/ngx-export-as/src/public_api.ts","../../../projects/ngx-export-as/src/ngx-export-as.ts"],"sourcesContent":["import { Inject, Injectable, PLATFORM_ID } from '@angular/core';\nimport { Observable } from 'rxjs';\n\nimport { ExportAsConfig } from './export-as-config.model';\n\nimport html2canvas from 'html2canvas';\nimport * as XLSX from 'xlsx';\n// import HTMLtoDOCX from 'html-to-docx';\nimport html2pdf from 'html2pdf.js';\nimport { isPlatformBrowser } from '@angular/common';\n\n/**\n * Angular service for exporting HTML/Table elements to various file formats\n * \n * @description\n * This service provides functionality to export HTML content, tables, or specific DOM elements\n * into various file formats including PDF, PNG, Excel, Word documents, CSV, JSON, and XML.\n * \n * Supports both browser download and base64 content retrieval for further processing.\n * \n * **As of v1.21.0:** This is a standalone service - no NgModule required.\n * Provide it directly in your component or app.config.ts.\n * \n * @export\n * @class ExportAsService\n * \n * @example\n * ```typescript\n * // Standalone Component (Recommended)\n * import { Component, inject } from '@angular/core';\n * \n * @Component({\n *   selector: 'app-export',\n *   standalone: true,\n *   providers: [ExportAsService]\n * })\n * export class ExportComponent {\n *   private readonly exportAsService = inject(ExportAsService);\n * \n *   exportToPDF() {\n *     const config: ExportAsConfig = {\n *       type: 'pdf',\n *       elementIdOrContent: 'tableId'\n *     };\n *     this.exportAsService.save(config, 'my-export').subscribe(() => {\n *       console.log('Export completed');\n *     });\n *   }\n * }\n * ```\n * \n * @example\n * ```typescript\n * // App-wide provider (app.config.ts)\n * export const appConfig: ApplicationConfig = {\n *   providers: [ExportAsService]\n * };\n * ```\n */\n@Injectable()\nexport class ExportAsService {\n\n  /**\n   * Creates an instance of ExportAsService\n   * @param {Object} platformId - Angular platform identifier for SSR compatibility\n   * @memberof ExportAsService\n   */\n  constructor(\n    @Inject(PLATFORM_ID) private platformId: Object\n  ) {\n    if (isPlatformBrowser(this.platformId)) {\n      window['html2canvas'] = html2canvas;\n    }\n   }\n\n  /**\n   * Retrieves the exported content as a base64 string or JSON object\n   * \n   * @description\n   * This is the main method for retrieving exported content without downloading.\n   * The return type varies by format:\n   * - Most formats: base64 encoded string\n   * - JSON format: returns actual JSON object (not base64)\n   * \n   * @param {ExportAsConfig} config - Export configuration object\n   * @returns {Observable<string | null>} Observable containing the base64 string or null\n   * \n   * @example\n   * ```typescript\n   * const config: ExportAsConfig = {\n   *   type: 'pdf',\n   *   elementIdOrContent: 'myTableId'\n   * };\n   * \n   * this.exportAsService.get(config).subscribe(content => {\n   *   console.log('Base64 content:', content);\n   *   // Use content for upload, preview, etc.\n   * });\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  get(config: ExportAsConfig): Observable<string | null> {\n    // structure method name dynamically by type\n    const func = 'get' + config.type.toUpperCase();\n    // if type supported execute and return\n    if (this[func]) {\n      return this[func](config);\n    }\n\n    // throw error for unsupported formats\n    return new Observable((observer) => { observer.error('Export type is not supported.'); });\n  }\n\n  /**\n   * Exports and automatically downloads the file to the user's device\n   * \n   * @description\n   * This method triggers an automatic download of the exported content.\n   * The file extension is automatically appended based on the export type.\n   * \n   * @param {ExportAsConfig} config - Export configuration object\n   * @param {string} fileName - The name of the file to be saved (without extension)\n   * @returns {Observable<string | null>} Observable that completes when download starts\n   * \n   * @example\n   * ```typescript\n   * private readonly exportAsService = inject(ExportAsService);\n   * \n   * downloadReport() {\n   *   const config: ExportAsConfig = {\n   *     type: 'xlsx',\n   *     elementIdOrContent: 'dataTable',\n   *     options: { /* SheetJS options *\\/ }\n   *   };\n   *   \n   *   this.exportAsService.save(config, 'quarterly-report').subscribe(() => {\n   *     console.log('Download started');\n   *   });\n   * }\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  save(config: ExportAsConfig, fileName: string): Observable<string | null> {\n    // set download\n    config.download = true;\n    // get file name with type\n    config.fileName = fileName + '.' + config.type;\n    return this.get(config);\n  }\n\n  /**\n   * Converts a base64 data URL string to a Blob object\n   * \n   * @description\n   * Extracts the MIME type and decodes the base64 string to create a Blob.\n   * Useful for handling binary data in browsers.\n   * \n   * @param {string} content - Base64 encoded data URL string (e.g., \"data:image/png;base64,...\")\n   * @returns {Observable<Blob>} Observable containing the Blob object\n   * \n   * @example\n   * ```typescript\n   * private readonly exportAsService = inject(ExportAsService);\n   * \n   * convertToBlob() {\n   *   const dataUrl = 'data:image/png;base64,iVBORw0KGgo...';\n   *   this.exportAsService.contentToBlob(dataUrl).subscribe(blob => {\n   *     console.log('Blob size:', blob.size);\n   *   });\n   * }\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  contentToBlob(content: string): Observable<Blob> {\n    return new Observable((observer) => {\n      // get content string and extract mime type\n      const arr = content.split(','), mime = arr[0].match(/:(.*?);/)[1],\n        bstr = atob(arr[1]);\n      let n = bstr.length;\n      const u8arr = new Uint8Array(n);\n      while (n--) {\n        u8arr[n] = bstr.charCodeAt(n);\n      }\n      observer.next(new Blob([u8arr], { type: mime }));\n      observer.complete();\n    });\n  }\n\n  /**\n   * Removes the data URL prefix from a base64 string\n   * \n   * @description\n   * Strips the MIME type prefix (e.g., \"data:text/csv;base64,\") from a base64 data URL,\n   * leaving only the raw base64 encoded content.\n   * \n   * @param {string} fileContent - The complete base64 data URL string\n   * @returns {string} The raw base64 string without the data URL prefix\n   * \n   * @example\n   * ```typescript\n   * const dataUrl = 'data:text/csv;base64,SGVsbG8gV29ybGQ=';\n   * const base64Only = this.removeFileTypeFromBase64(dataUrl);\n   * // Result: 'SGVsbG8gV29ybGQ='\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  removeFileTypeFromBase64(fileContent: string): string {\n    const re = /^data:[^]*;base64,/g;\n    const newContent: string = re[Symbol.replace](fileContent, '');\n    return newContent;\n  }\n\n  /**\n   * Adds a data URL prefix to a raw base64 string\n   * \n   * @description\n   * Prepends the MIME type and base64 identifier to create a valid data URL\n   * that can be used in browsers.\n   * \n   * @param {string} fileContent - Raw base64 encoded string\n   * @param {string} fileMime - MIME type (e.g., \"text/csv\", \"image/png\")\n   * @returns {string} Complete base64 data URL string\n   * \n   * @example\n   * ```typescript\n   * const base64 = 'SGVsbG8gV29ybGQ=';\n   * const dataUrl = this.addFileTypeToBase64(base64, 'text/plain');\n   * // Result: 'data:text/plain;base64,SGVsbG8gV29ybGQ='\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  addFileTypeToBase64(fileContent: string, fileMime: string): string {\n    return `data:${fileMime};base64,${fileContent}`;\n  }\n\n  /**\n   * Downloads a file from a data URL\n   * \n   * @description\n   * Converts a base64 data URL to a Blob and initiates a browser download.\n   * \n   * @param {string} fileName - The name for the downloaded file (with extension)\n   * @param {string} dataURL - Base64 data URL string\n   * @returns {void}\n   * \n   * @example\n   * ```typescript\n   * const dataUrl = 'data:text/csv;base64,SGVsbG8gV29ybGQ=';\n   * this.downloadFromDataURL('myfile.csv', dataUrl);\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  downloadFromDataURL(fileName: string, dataURL: string): void {\n    // create blob\n    this.contentToBlob(dataURL).subscribe(blob => {\n      // download the blob\n      this.downloadFromBlob(blob, fileName);\n    });\n  }\n\n  /**\n   * Downloads a file from a Blob object\n   * \n   * @description\n   * Handles file download from Blob with cross-browser support including legacy IE.\n   * Creates an object URL and triggers the download appropriately for each browser.\n   * \n   * @param {Blob} blob - The Blob object containing file data\n   * @param {string} fileName - The name for the downloaded file (with extension)\n   * @returns {void}\n   * \n   * @example\n   * ```typescript\n   * const blob = new Blob(['Hello World'], { type: 'text/plain' });\n   * this.downloadFromBlob(blob, 'hello.txt');\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  downloadFromBlob(blob: Blob, fileName: string) {\n    // get object url\n    const url = window.URL.createObjectURL(blob);\n    // check for microsoft internet explorer\n    if (window.navigator && window.navigator['msSaveOrOpenBlob']) {\n      // use IE download or open if the user using IE\n      window.navigator['msSaveOrOpenBlob'](blob, fileName);\n    } else {\n      this.saveFile(fileName, url);\n    }\n  }\n\n  /**\n   * Creates and triggers a download link programmatically\n   * \n   * @private\n   * @description\n   * Creates a temporary anchor element, simulates a click to trigger download,\n   * and then removes the element from the DOM.\n   * \n   * @param {string} fileName - The name for the downloaded file\n   * @param {string} url - The object URL or data URL to download\n   * @returns {void}\n   * \n   * @memberof ExportAsService\n   */\n  private saveFile(fileName: string, url: string) {\n    // if not using IE then create link element\n    const element = document.createElement('a');\n    // set download attr with file name\n    element.setAttribute('download', fileName);\n    // set the element as hidden\n    element.style.display = 'none';\n    // append the body\n    document.body.appendChild(element);\n    // set href attr\n    element.href = url;\n    // click on it to start downloading\n    element.click();\n    // remove the link from the dom\n    document.body.removeChild(element);\n  }\n\n  /**\n   * Exports content to PDF format\n   * \n   * @private\n   * @description\n   * Uses html2pdf.js library to convert HTML content to PDF.\n   * Supports custom PDF manipulation via pdfCallbackFn option.\n   * Accepts HTMLElement, Canvas, Image, or element ID as input.\n   * \n   * @param {ExportAsConfig} config - Export configuration with PDF-specific options\n   * @returns {Observable<string | null>} Observable with base64 PDF data or null if downloading\n   * \n   * @example\n   * ```typescript\n   * // PDF with custom options\n   * config.options = {\n   *   margin: 10,\n   *   filename: 'report.pdf',\n   *   image: { type: 'jpeg', quality: 0.98 },\n   *   html2canvas: { scale: 2 },\n   *   jsPDF: { unit: 'mm', format: 'a4', orientation: 'portrait' },\n   *   pdfCallbackFn: (pdf) => {\n   *     const pageCount = pdf.internal.getNumberOfPages();\n   *     for (let i = 1; i <= pageCount; i++) {\n   *       pdf.setPage(i);\n   *       pdf.text('Page ' + i, 10, 10);\n   *     }\n   *   }\n   * };\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  private getPDF(config: ExportAsConfig): Observable<string | null> {\n    return new Observable((observer) => {\n      if (!config.options) {\n        config.options = {};\n      }\n      config.options.filename = config.fileName;\n      const element: HTMLElement = document.getElementById(config.elementIdOrContent);\n      const pdf = html2pdf().set(config.options).from(element ? element : config.elementIdOrContent);\n\n      const download = config.download;\n      const pdfCallbackFn = config.options.pdfCallbackFn;\n      if (download) {\n        if (pdfCallbackFn) {\n          this.applyPdfCallbackFn(pdf, pdfCallbackFn).save();\n        } else {\n          pdf.save();\n        }\n        observer.next(null);\n        observer.complete();\n      } else {\n        if (pdfCallbackFn) {\n          this.applyPdfCallbackFn(pdf, pdfCallbackFn).outputPdf('datauristring').then(data => {\n            observer.next(data);\n            observer.complete();\n          });\n        } else {\n          pdf.outputPdf('datauristring').then(data => {\n            observer.next(data);\n            observer.complete();\n          });\n        }\n      }\n    });\n  }\n\n  /**\n   * Applies a custom callback function to modify the PDF before output\n   * \n   * @private\n   * @description\n   * Allows custom modifications to the PDF object (headers, footers, page numbers, etc.)\n   * before final rendering or download.\n   * \n   * @param {any} pdf - The html2pdf instance\n   * @param {Function} pdfCallbackFn - Callback function to modify the PDF\n   * @returns {Promise} Promise that resolves after callback execution\n   * \n   * @memberof ExportAsService\n   */\n  private applyPdfCallbackFn(pdf, pdfCallbackFn) {\n    return pdf.toPdf().get('pdf').then((pdfRef) => {\n      pdfCallbackFn(pdfRef);\n    });\n  }\n\n  /**\n   * Exports content to PNG image format\n   * \n   * @private\n   * @description\n   * Uses html2canvas library to convert HTML element to PNG image.\n   * Captures the visual representation of the specified DOM element.\n   * \n   * @param {ExportAsConfig} config - Export configuration with html2canvas options\n   * @returns {Observable<string | null>} Observable with base64 PNG data or null if downloading\n   * \n   * @example\n   * ```typescript\n   * // PNG with custom options\n   * config.options = {\n   *   scale: 2,              // Higher quality\n   *   backgroundColor: '#ffffff',\n   *   logging: false,\n   *   useCORS: true,        // For external images\n   *   allowTaint: false\n   * };\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  private getPNG(config: ExportAsConfig): Observable<string | null> {\n    return new Observable((observer) => {\n      const element: HTMLElement = document.getElementById(config.elementIdOrContent);\n      html2canvas(element, config.options).then((canvas) => {\n        const imgData = canvas.toDataURL('image/PNG');\n        if (config.type === 'png' && config.download) {\n          this.downloadFromDataURL(config.fileName, imgData);\n          observer.next(null);\n        } else {\n          observer.next(imgData);\n        }\n        observer.complete();\n      }, err => {\n        observer.error(err);\n      });\n    });\n  }\n\n  /**\n   * Exports HTML table to CSV format\n   * \n   * @private\n   * @description\n   * Extracts data from HTML table elements (th, td) and converts to CSV format.\n   * Each row becomes a CSV line with comma-separated values.\n   * Values are quoted to handle special characters.\n   * \n   * @param {ExportAsConfig} config - Export configuration (requires table element)\n   * @returns {Observable<string | null>} Observable with base64 CSV data or null if downloading\n   * \n   * @example\n   * ```typescript\n   * // HTML table structure required\n   * <table id=\"myTable\">\n   *   <tr><th>Name</th><th>Age</th></tr>\n   *   <tr><td>John</td><td>30</td></tr>\n   * </table>\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  private getCSV(config: ExportAsConfig): Observable<string | null> {\n    return new Observable((observer) => {\n      const element: HTMLElement = document.getElementById(config.elementIdOrContent);\n      const csv = [];\n      const rows: any = element.querySelectorAll('table tr');\n      for (let index = 0; index < rows.length; index++) {\n        const rowElement = rows[index];\n        const row = [];\n        const cols = rowElement.querySelectorAll('td, th');\n        for (let colIndex = 0; colIndex < cols.length; colIndex++) {\n          const col = cols[colIndex];\n          row.push('\"'+col.innerText+'\"');\n        }\n        csv.push(row.join(','));\n      }\n      const csvContent = 'data:text/csv;base64,' + this.btoa(csv.join('\\n'));\n      if (config.download) {\n        this.downloadFromDataURL(config.fileName, csvContent);\n        observer.next(null);\n      } else {\n        observer.next(csvContent);\n      }\n      observer.complete();\n    });\n  }\n\n  /**\n   * Exports HTML table to plain text format\n   * \n   * @private\n   * @description\n   * Reuses CSV export logic but saves as .txt file extension.\n   * Outputs comma-separated values in plain text format.\n   * \n   * @param {ExportAsConfig} config - Export configuration (requires table element)\n   * @returns {Observable<string | null>} Observable with base64 text data or null if downloading\n   * \n   * @memberof ExportAsService\n   */\n  private getTXT(config: ExportAsConfig): Observable<string | null> {\n    const nameFrags = config.fileName.split('.');\n    config.fileName = `${nameFrags[0]}.txt`;\n    return this.getCSV(config);\n  }\n\n  /**\n   * Exports HTML table to Microsoft Excel format (.xls)\n   * \n   * @private\n   * @description\n   * Uses SheetJS (xlsx library) to convert HTML table to Excel format.\n   * Supports both legacy .xls and modern .xlsx formats.\n   * The resulting file is compatible with Microsoft Excel and other spreadsheet applications.\n   * \n   * @param {ExportAsConfig} config - Export configuration with SheetJS options\n   * @returns {Observable<string | null>} Observable with base64 Excel data or null if downloading\n   * \n   * @example\n   * ```typescript\n   * // Excel with custom options\n   * config.options = {\n   *   bookType: 'xlsx',\n   *   sheet: 'Sheet1',\n   *   raw: false,\n   *   dateNF: 'yyyy-mm-dd'\n   * };\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  private getXLS(config: ExportAsConfig): Observable<string | null> {\n    return new Observable((observer) => {\n\n      const element: HTMLElement = document.getElementById(config.elementIdOrContent);\n      const ws3 = XLSX.utils.table_to_sheet(element, config.options);\n      const wb = XLSX.utils.book_new();\n      XLSX.utils.book_append_sheet(wb, ws3, config.fileName);\n      const out = XLSX.write(wb, { type: 'base64' });\n      const xlsContent = 'data:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;base64,' + out;\n      if (config.download) {\n        this.downloadFromDataURL(config.fileName, xlsContent);\n        observer.next(null);\n      } else {\n        observer.next(xlsContent);\n      }\n      observer.complete();\n    });\n  }\n\n  /**\n   * Exports HTML table to Microsoft Excel format (.xlsx)\n   * \n   * @private\n   * @description\n   * Alias for getXLS method. Both .xls and .xlsx use the same underlying implementation\n   * via SheetJS library.\n   * \n   * @param {ExportAsConfig} config - Export configuration with SheetJS options\n   * @returns {Observable<string | null>} Observable with base64 Excel data or null if downloading\n   * \n   * @memberof ExportAsService\n   */\n  private getXLSX(config: ExportAsConfig): Observable<string | null> {\n    return this.getXLS(config);\n  }\n\n  // private getDOCX(config: ExportAsConfig): Observable<string | null> {\n  //   return new Observable((observer) => {\n  //     const contentDocument: string = document.getElementById(config.elementIdOrContent).outerHTML;\n  //     const content = '<!DOCTYPE html>' + contentDocument;\n  //     HTMLtoDOCX(content, null, config.options).then(converted => {\n  //       if (config.download) {\n  //         this.downloadFromBlob(converted, config.fileName);\n  //         observer.next();\n  //         observer.complete();\n  //       } else {\n  //         const reader = new FileReader();\n  //         reader.onloadend = () => {\n  //           const base64data = reader.result as string;\n  //           observer.next(base64data);\n  //           observer.complete();\n  //         };\n  //         reader.readAsDataURL(converted);\n  //       }\n  //     });\n  //   });\n  // }\n\n  // private getDOC(config: ExportAsConfig): Observable<string | null> {\n  //   return this.getDOCX(config);\n  // }\n\n  /**\n   * Exports HTML table to JSON format\n   * \n   * @private\n   * @description\n   * Converts HTML table to JSON array of objects.\n   * First row is treated as headers (keys), subsequent rows as data values.\n   * Headers are normalized (lowercase, spaces removed).\n   * \n   * **Note:** Unlike other formats, this returns actual JSON objects, not base64.\n   * \n   * @param {ExportAsConfig} config - Export configuration (requires table element)\n   * @returns {Observable<any[] | null>} Observable with JSON array or null if downloading\n   * \n   * @example\n   * ```typescript\n   * // HTML table:\n   * // | Name  | Age |\n   * // | John  | 30  |\n   * // | Jane  | 25  |\n   * \n   * // Result:\n   * [\n   *   { \"name\": \"John\", \"age\": \"30\" },\n   *   { \"name\": \"Jane\", \"age\": \"25\" }\n   * ]\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  private getJSON(config: ExportAsConfig): Observable<any[] | null> {\n    return new Observable((observer) => {\n      const data = []; // first row needs to be headers\n      const headers = [];\n      const table = <HTMLTableElement>document.getElementById(config.elementIdOrContent);\n      for (let index = 0; index < table.rows[0].cells.length; index++) {\n        headers[index] = table.rows[0].cells[index].innerHTML.toLowerCase().replace(/ /gi, '');\n      }\n      // go through cells\n      for (let i = 1; i < table.rows.length; i++) {\n        const tableRow = table.rows[i]; const rowData = {};\n        for (let j = 0; j < tableRow.cells.length; j++) {\n          rowData[headers[j]] = tableRow.cells[j].innerHTML;\n        }\n        data.push(rowData);\n      }\n      const jsonString = JSON.stringify(data);\n      const jsonBase64 = this.btoa(jsonString);\n      const dataStr = 'data:text/json;base64,' + jsonBase64;\n      if (config.download) {\n        this.downloadFromDataURL(config.fileName, dataStr);\n        observer.next(null);\n      } else {\n        observer.next(data);\n      }\n      observer.complete();\n    });\n  }\n\n  /**\n   * Exports HTML table to XML format\n   * \n   * @private\n   * @description\n   * Converts HTML table to XML structure.\n   * First cell of each row becomes the class name attribute,\n   * remaining cells become data elements.\n   * \n   * @param {ExportAsConfig} config - Export configuration (requires table element)\n   * @returns {Observable<string | null>} Observable with base64 XML data or null if downloading\n   * \n   * @example\n   * ```typescript\n   * // HTML table:\n   * // | Name  | Age | City    |\n   * // | John  | 30  | NYC     |\n   * // | Jane  | 25  | Boston  |\n   * \n   * // Result:\n   * <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n   * <Root>\n   *   <Classes>\n   *     <Class name=\"John\">\n   *       <data>30</data>\n   *       <data>NYC</data>\n   *     </Class>\n   *     <Class name=\"Jane\">\n   *       <data>25</data>\n   *       <data>Boston</data>\n   *     </Class>\n   *   </Classes>\n   * </Root>\n   * ```\n   * \n   * @memberof ExportAsService\n   */\n  private getXML(config: ExportAsConfig): Observable<string | null> {\n    return new Observable((observer) => {\n      let xml = '<?xml version=\"1.0\" encoding=\"UTF-8\"?><Root><Classes>';\n      const tritem = document.getElementById(config.elementIdOrContent).getElementsByTagName('tr');\n      for (let i = 0; i < tritem.length; i++) {\n        const celldata = tritem[i];\n        if (celldata.cells.length > 0) {\n          xml += '<Class name=\"' + celldata.cells[0].textContent + '\">\\n';\n          for (let m = 1; m < celldata.cells.length; ++m) {\n            xml += '\\t<data>' + celldata.cells[m].textContent + '</data>\\n';\n          }\n          xml += '</Class>\\n';\n        }\n      }\n      xml += '</Classes></Root>';\n      const base64 = 'data:text/xml;base64,' + this.btoa(xml);\n      if (config.download) {\n        this.downloadFromDataURL(config.fileName, base64);\n        observer.next(null);\n      } else {\n        observer.next(base64);\n      }\n      observer.complete();\n    });\n  }\n\n  /**\n   * Encodes a string to base64 with UTF-8 support\n   * \n   * @private\n   * @description\n   * Wrapper around browser's btoa() with proper UTF-8 encoding.\n   * Handles special characters and international text correctly.\n   * Uses encodeURIComponent and unescape for proper character encoding.\n   * \n   * @param {string} content - The string content to encode\n   * @returns {string} Base64 encoded string\n   * \n   * @memberof ExportAsService\n   */\n  private btoa(content: string) {\n    return btoa(unescape(encodeURIComponent(content)));\n  }\n\n}\n","/*\n * Public API Surface of ngx-export-as\n */\n\nexport * from './lib/export-as.service';\nexport * from './lib/export-as-config.model';\n","/**\n * Generated bundle index. Do not edit.\n */\n\nexport * from 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