1 files changed, 38 insertions, 0 deletions

diff --git a/client/src/root-helpers/utils.ts b/client/src/root-helpers/utils.ts
index acfb565a3..6df151ad9 100644
--- a/client/src/root-helpers/utils.ts
+++ b/client/src/root-helpers/utils.ts
@@ -1,3 +1,5 @@
+import { environment } from '../environments/environment'
+
 function objectToUrlEncoded (obj: any) {
   const str: string[] = []
   for (const key of Object.keys(obj)) {
@@ -7,6 +9,42 @@ function objectToUrlEncoded (obj: any) {
   return str.join('&')
 }
 
+// Thanks: https://github.com/uupaa/dynamic-import-polyfill
+function importModule (path: string) {
+  return new Promise((resolve, reject) => {
+    const vector = '$importModule$' + Math.random().toString(32).slice(2)
+    const script = document.createElement('script')
+
+    const destructor = () => {
+      delete window[ vector ]
+      script.onerror = null
+      script.onload = null
+      script.remove()
+      URL.revokeObjectURL(script.src)
+      script.src = ''
+    }
+
+    script.defer = true
+    script.type = 'module'
+
+    script.onerror = () => {
+      reject(new Error(`Failed to import: ${path}`))
+      destructor()
+    }
+    script.onload = () => {
+      resolve(window[ vector ])
+      destructor()
+    }
+    const absURL = (environment.apiUrl || window.location.origin) + path
+    const loader = `import * as m from "${absURL}"; window.${vector} = m;` // export Module
+    const blob = new Blob([ loader ], { type: 'text/javascript' })
+    script.src = URL.createObjectURL(blob)
+
+    document.head.appendChild(script)
+  })
+}
+
 export {
+  importModule,
   objectToUrlEncoded
 }