Polyfill `Uint8ClampedArray` using core-js

https://github.com/zloirock/core-js

package.json

@@ -7,6 +7,7 @@
     "babel-loader": "^6.4.0",
     "babel-plugin-transform-es2015-modules-commonjs": "^6.23.0",
     "babel-preset-es2015": "^6.24.1",
+    "core-js": "^2.5.0",
     "escodegen": "^1.8.0",
     "eslint": "^4.2.0",
     "eslint-plugin-mozilla": "^0.4.0",

src/shared/compatibility.js

@@ -53,6 +53,12 @@ PDFJS.compatibilityChecked = true;
 // Checking if the typed arrays are supported
 // Support: iOS<6.0 (subarray), IE<10, Android<4.0
 (function checkTypedArrayCompatibility() {
+  if (typeof Uint8ClampedArray === 'undefined') {
+    // Support: IE<11
+    globalScope.Uint8ClampedArray =
+      require('core-js/fn/typed/uint8-clamped-array');
+  }
+
   if (typeof Uint8Array !== 'undefined') {
     // Support: iOS<6.0
     if (typeof Uint8Array.prototype.subarray === 'undefined') {

systemjs.config.js

@@ -50,6 +50,7 @@
       'pdfjs-web': new URL('web', baseLocation).href,
       'pdfjs-test': new URL('test', baseLocation).href,
       'pdfjs-lib': new URL('src/pdf', baseLocation).href,
+      'core-js': new URL('node_modules/core-js', baseLocation).href,
     },
     meta: {
       '*': {