Convert to class and by conincidence fix bug in findMaxFileId which take only last file name (which can lead to problem if XLSX template was generated)

.gitignore

@@ -9,4 +9,5 @@ atlassian-ide-plugin.xml
 .vs/
 lib/*.js
 lib/*.d.ts
-!lib/index.d.ts
+!lib/index.d.ts
+*.map

package-lock.json

@@ -6,7 +6,7 @@
   "packages": {
     "": {
       "name": "xlsx-template",
-      "version": "1.4.0",
+      "version": "1.4.2",
       "license": "MIT",
       "dependencies": {
         "@kant2002/jszip": "2.7.1",
@@ -15,7 +15,6 @@
       },
       "devDependencies": {
         "@types/jest": "^27.4.0",
-        "@types/jszip": "0.0.27",
         "@types/node": "^14.0.27",
         "jest": "^27.5.1",
         "ts-jest": "^27.1.3",
@@ -985,12 +984,6 @@
         "pretty-format": "^27.0.0"
       }
     },
-    "node_modules/@types/jszip": {
-      "version": "0.0.27",
-      "resolved": "https://registry.npmjs.org/@types/jszip/-/jszip-0.0.27.tgz",
-      "integrity": "sha1-pLb9+Z7cV6XtJ/Ai5QGgchyeFxM=",
-      "dev": true
-    },
     "node_modules/@types/node": {
       "version": "14.0.27",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-14.0.27.tgz",

package.json

@@ -56,13 +56,12 @@
     }
   },
   "dependencies": {
+    "@kant2002/jszip": "2.7.1",
     "elementtree": "^0.1.7",
-    "image-size": "^0.3.5",
-    "@kant2002/jszip": "2.7.1"
+    "image-size": "^0.3.5"
   },
   "devDependencies": {
     "@types/jest": "^27.4.0",
-    "@types/jszip": "0.0.27",
     "@types/node": "^14.0.27",
     "jest": "^27.5.1",
     "ts-jest": "^27.1.3",

src/augment.d.ts

@@ -0,0 +1,193 @@
+// Type definitions for JSZip
+// Project: http://stuk.github.com/jszip/
+// Definitions by: mzeiher <https://github.com/mzeiher>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+interface JSZip {
+    /**
+     * Get a file from the archive
+     *
+     * @param Path relative path to file
+     * @return File matching path, null if no file found
+     */
+    file(path: string): JSZipObject;
+
+    /**
+     * Get files matching a RegExp from archive
+     *
+     * @param path RegExp to match
+     * @return Return all matching files or an empty array
+     */
+    file(path: RegExp): JSZipObject[];
+
+    /**
+     * Add a file to the archive
+     *
+     * @param path Relative path to file
+     * @param content Content of the file
+     * @param options Optional information about the file
+     * @return JSZip object
+     */
+    file(path: string, data: any, options?: JSZipFileOptions): JSZip;
+
+    files: JSZipObject[];
+
+    /**
+     * Return an new JSZip instance with the given folder as root
+     *
+     * @param name Name of the folder
+     * @return New JSZip object with the given folder as root or null
+     */
+    folder(name: string): JSZip;
+
+    /**
+     * Returns new JSZip instances with the matching folders as root
+     *
+     * @param name RegExp to match
+     * @return New array of JSZipFile objects which match the RegExp
+     */
+    folder(name: RegExp): JSZipObject[];
+
+    /**
+     * Get all files wchich match the given filter function
+     *
+     * @param predicate Filter function
+     * @return Array of matched elements
+     */
+    filter(predicate: (relativePath: string, file: JSZipObject) => boolean): JSZipObject[];
+
+    /**
+     * Removes the file or folder from the archive
+     *
+     * @param path Relative path of file or folder
+     * @return Returns the JSZip instance
+     */
+    remove(path: string): JSZip;
+
+    /**
+     * Generates a new archive
+     *
+     * @param options Optional options for the generator
+     * @return The serialized archive
+     */
+    generate(options?: JSZipGeneratorOptions): any;
+
+    /**
+     * Deserialize zip file
+     *
+     * @param data Serialized zip file
+     * @param options Options for deserializing
+     * @return Returns the JSZip instance
+     */
+    load(data: any, options: JSZipLoadOptions): JSZip;
+}
+
+interface JSZipObject {
+    name: string;
+    dir: boolean;
+    date: Date;
+    comment: string;
+    options: JSZipObjectOptions;
+
+    asText(): string;
+    asBinary(): string;
+    asArrayBuffer(): ArrayBuffer;
+    asUint8Array(): Uint8Array;
+    //asNodeBuffer(): Buffer;
+}
+
+interface JSZipFileOptions {
+    base64?: boolean;
+    binary?: boolean;
+    date?: Date;
+    compression?: string;
+    comment?: string;
+    optimizedBinaryString?: boolean;
+    createFolders?: boolean;
+}
+
+interface JSZipObjectOptions {
+    /** deprecated */
+    base64: boolean;
+    /** deprecated */
+    binary: boolean;
+    /** deprecated */
+    dir: boolean;
+    /** deprecated */
+    date: Date;
+    compression: string;
+}
+
+interface JSZipGeneratorOptions {
+    /** deprecated */
+    base64?: boolean;
+    /** DEFLATE or STORE */
+    compression?: string;
+    /** base64 (default), string, uint8array, blob */
+    type?: string;
+    comment?: string;
+}
+
+interface JSZipLoadOptions {
+    base64?: boolean;
+    checkCRC32?: boolean;
+    optimizedBinaryString?: boolean;
+    createFolders?: boolean;
+}
+
+interface JSZipSupport {
+    arraybuffer: boolean;
+    uint8array: boolean;
+    blob: boolean;
+    nodebuffer: boolean;
+}
+
+interface DEFLATE {
+    /** pako.deflateRaw, level:0-9 */
+    compress(input: string, compressionOptions: {level:number}): Uint8Array;
+    compress(input: number[], compressionOptions: {level:number}): Uint8Array;
+    compress(input: Uint8Array, compressionOptions: {level:number}): Uint8Array;
+
+    /** pako.inflateRaw */
+    uncompress(input: string): Uint8Array;
+    uncompress(input: number[]): Uint8Array;
+    uncompress(input: Uint8Array): Uint8Array;
+}
+
+declare var JSZip: {
+    /**
+     * Create JSZip instance
+     */
+    (): JSZip;
+    /**
+     * Create JSZip instance
+     * If no parameters given an empty zip archive will be created
+     *
+     * @param data Serialized zip archive
+     * @param options Description of the serialized zip archive
+     */
+    (data: any, options?: JSZipLoadOptions): JSZip;
+
+    /**
+     * Create JSZip instance
+     */
+    new (): JSZip;
+    /**
+     * Create JSZip instance
+     * If no parameters given an empty zip archive will be created
+     *
+     * @param data Serialized zip archive
+     * @param options Description of the serialized zip archive
+     */
+    new (data: any, options?: JSZipLoadOptions): JSZip;
+
+    prototype: JSZip;
+    support: JSZipSupport;
+    compressions: {
+      DEFLATE: DEFLATE;
+    }
+}
+
+declare module "@kant2002/jszip" {
+    export = JSZip;
+}

tsconfig.json

@@ -9,9 +9,11 @@
     "noImplicitAny": false,
     "alwaysStrict": true,
     "esModuleInterop": true,
-    "outDir": "lib"
+    "outDir": "lib",
+    "sourceMap": true
   }, 
   "files": [
-    "src/index.js"
+    "src/index.js",
+    "src/augment.d.ts"
   ]
 }