fix: Pass existing mimetype as parameter from file

Author: sethk4783

src/lib/api/upload/file_tools.browser.ts

@@ -154,7 +154,7 @@ const readPart = (start: number, end: number, file): Promise<any> => {
  * @param {*} fileOrString
  * @returns {Promise<File>}
  */
-export const getFile = (input: InputFile, sanitizeOptions?: SanitizeOptions): Promise<FsFile> => {
+export const getFile = (input: InputFile, sanitizeOptions?: SanitizeOptions, mimetype?: string): Promise<FsFile> => {
   let filename;
   let file: Blob;
 
@@ -186,7 +186,7 @@ export const getFile = (input: InputFile, sanitizeOptions?: SanitizeOptions): Pr
         {
           name: filename,
           size: file.size,
-          type: mime,
+          type: mimetype || mime,
           slice: res.slice,
           release: res.release,
         },

src/lib/api/upload/file_tools.node.ts

@@ -63,7 +63,7 @@ const isFileBase = (input: InputFile): input is string => {
  * @param {*} inputFile
  * @returns {Promise<File>}
  */
-export const getFile = async(input: InputFile, sanitizeOptions?: SanitizeOptions): Promise<FsFile> => {
+export const getFile = async(input: InputFile, sanitizeOptions?: SanitizeOptions, mimetype?: string): Promise<FsFile> => {
   let filename;
 
   if (isFileNamed(input)) {
@@ -88,7 +88,7 @@ export const getFile = async(input: InputFile, sanitizeOptions?: SanitizeOptions
             {
               name: filename,
               size: buffer.byteLength,
-              type: mime,
+              type: mimetype || mime,
               slice: (start, end) => Promise.resolve(buffer.slice(start, end)),
             },
             sanitizeOptions
@@ -114,7 +114,7 @@ export const getFile = async(input: InputFile, sanitizeOptions?: SanitizeOptions
         {
           name: filename,
           size: input.byteLength,
-          type: mime,
+          type: mimetype || mime,
           // @ts-ignore
           slice: (start, end) => Promise.resolve(input.slice(start, end)),
         },

src/lib/api/upload/upload.ts

@@ -203,9 +203,9 @@ export class Upload extends EventEmitter {
    * @returns {Promise<any>}
    * @memberof Upload
    */
-  async upload(input: InputFile, altText?: string): Promise<any> {
+  async upload(input: InputFile, altText?: string, mimetype?: string): Promise<any> {
 
-    const f = await getFile(input, this.sanitizerOptions);
+    const f = await getFile(input, this.sanitizerOptions, mimetype);
     f.customName = this.overrideFileName;
     if (altText) {
       f.alt = altText;

src/lib/client.ts

@@ -445,7 +445,7 @@ export class Client extends EventEmitter {
    *
    * @returns {Promise}
    */
-  upload(file: InputFile, options?: UploadOptions, storeOptions?: StoreUploadOptions, token?: any, security?: Security) {
+  upload(file: InputFile, options?: UploadOptions, storeOptions?: StoreUploadOptions, token?: any, security?: Security, mimetype?: string) {
     let upload = new Upload(options, storeOptions);
     upload.setSession(this.session);
 
@@ -474,7 +474,7 @@ export class Client extends EventEmitter {
       this.emit('upload.error', e);
     });
 
-    return upload.upload(file, options && options.altText);
+    return upload.upload(file, options && options.altText, mimetype);
   }
 
   /**