fix web-worker not working as expected

Author: Donaldcwl

lib/web-worker.js

@@ -1,6 +1,6 @@
 import imageCompression from './index'
-// import compress from './image-compression'
-// import { getNewCanvasAndCtx } from './utils'
+import compress from './image-compression'
+import { getNewCanvasAndCtx } from './utils'
 
 let cnt = 0
 let imageCompressionLibUrl
@@ -29,48 +29,47 @@ const worker = createWorker(() => {
   })
 })
 
-// function createSourceObject (str) {
-//   return URL.createObjectURL(new Blob([str], { type: 'application/javascript' }))
-// }
+function createSourceObject (str) {
+  return URL.createObjectURL(new Blob([str], { type: 'application/javascript' }))
+}
 
 export function compressOnWebWorker (file, options) {
   return new Promise(async (resolve, reject) => {
     if (!imageCompressionLibUrl) {
-      if (typeof document !== 'undefined' && 'currentScript' in document) {
-        imageCompressionLibUrl =  document.currentScript.src
-      } else {
-        return reject(new Error('Cannot obtain library url to be loaded in web worker'))
-      }
+      imageCompressionLibUrl = createSourceObject(`
+    function imageCompression (){return (${imageCompression}).apply(null, arguments)}
+
+    imageCompression.getDataUrlFromFile = ${imageCompression.getDataUrlFromFile}
+    imageCompression.getFilefromDataUrl = ${imageCompression.getFilefromDataUrl}
+    imageCompression.loadImage = ${imageCompression.loadImage}
+    imageCompression.drawImageInCanvas = ${imageCompression.drawImageInCanvas}
+    imageCompression.drawFileInCanvas = ${imageCompression.drawFileInCanvas}
+    imageCompression.canvasToFile = ${imageCompression.canvasToFile}
+    imageCompression.getExifOrientation = ${imageCompression.getExifOrientation}
+    imageCompression.handleMaxWidthOrHeight = ${imageCompression.handleMaxWidthOrHeight}
+    imageCompression.followExifOrientation = ${imageCompression.followExifOrientation}
+
+    getDataUrlFromFile = imageCompression.getDataUrlFromFile
+    getFilefromDataUrl = imageCompression.getFilefromDataUrl
+    loadImage = imageCompression.loadImage
+    drawImageInCanvas = imageCompression.drawImageInCanvas
+    drawFileInCanvas = imageCompression.drawFileInCanvas
+    canvasToFile = imageCompression.canvasToFile
+    getExifOrientation = imageCompression.getExifOrientation
+    handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight
+    followExifOrientation = imageCompression.followExifOrientation
+
+    getNewCanvasAndCtx = ${getNewCanvasAndCtx}
+    
+    CustomFileReader = FileReader
+    
+    CustomFile = File
+    
+    function _slicedToArray(arr, n) { return arr }
+
+    function compress (){return (${compress}).apply(null, arguments)}
+    `)
     }
-    // if (!imageCompressionLibUrl) {
-    //   imageCompressionLibUrl = createSourceObject(`
-    // function imageCompression (){return (${imageCompression}).apply(null, arguments)}
-    //
-    // imageCompression.getDataUrlFromFile = ${imageCompression.getDataUrlFromFile}
-    // imageCompression.getFilefromDataUrl = ${imageCompression.getFilefromDataUrl}
-    // imageCompression.loadImage = ${imageCompression.loadImage}
-    // imageCompression.drawImageInCanvas = ${imageCompression.drawImageInCanvas}
-    // imageCompression.drawFileInCanvas = ${imageCompression.drawFileInCanvas}
-    // imageCompression.canvasToFile = ${imageCompression.canvasToFile}
-    // imageCompression.getExifOrientation = ${imageCompression.getExifOrientation}
-    // imageCompression.handleMaxWidthOrHeight = ${imageCompression.handleMaxWidthOrHeight}
-    // imageCompression.followExifOrientation = ${imageCompression.followExifOrientation}
-    //
-    // getDataUrlFromFile = imageCompression.getDataUrlFromFile
-    // getFilefromDataUrl = imageCompression.getFilefromDataUrl
-    // loadImage = imageCompression.loadImage
-    // drawImageInCanvas = imageCompression.drawImageInCanvas
-    // drawFileInCanvas = imageCompression.drawFileInCanvas
-    // canvasToFile = imageCompression.canvasToFile
-    // getExifOrientation = imageCompression.getExifOrientation
-    // handleMaxWidthOrHeight = imageCompression.handleMaxWidthOrHeight
-    // followExifOrientation = imageCompression.followExifOrientation
-    //
-    // getNewCanvasAndCtx = ${getNewCanvasAndCtx}
-    //
-    // function compress (){return (${compress}).apply(null, arguments)}
-    // `)
-    // }
     let id = cnt++
 
     function handler (e) {