feat: use dynamic import and make api async

README.md

@@ -5,6 +5,13 @@ Addon that encapsulates ability to render a data set as either excel or csv.
 
 Forked from [roofstock/ember-cli-data-export](https://github.com/roofstock/ember-cli-data-export).
 
+First you need to install your own copy of xlsx and file-saver, these are peerDependencies to let you choose the version.
+
+In order to see which peerDependencies are needed you can run the command
+
+```
+npm info ember-spreadsheet-export peerDependencies
+```
 
 Differences from `ember-cli-data-export` include:
 ------------------------------------------------------------------------------

addon/services/excel.js

@@ -1,6 +1,5 @@
 import Service from '@ember/service';
 import { saveAs } from 'file-saver';
-import XLSX from 'xlsx';
 import optionize from '../utils/utils';
 
 const defaultConfig = {
@@ -12,8 +11,17 @@ const defaultConfig = {
   tableParseOptions: {},
 };
 
+export async function loadXLSX() {
+  return import('xlsx');
+}
+
 export default class ExcelService extends Service {
-  export(data, options) {
+  async XLSX() {
+    return loadXLSX();
+  }
+
+  async export(data, options) {
+    const XLSX = await this.XLSX();
     options = optionize(options, defaultConfig);
 
     function s2ab(s) {
@@ -57,8 +65,9 @@ export default class ExcelService extends Service {
           if (range.e.c < C) {
             range.e.c = C;
           }
-          let cell = { v: data[R][C] };
-          if (cell.v == null) {
+          let cellValue = data[R][C];
+          let cell = { v: cellValue };
+          if (cellValue.v == null) {
             continue;
           }
           let cell_ref = XLSX.utils.encode_cell({ c: C, r: R });
@@ -75,9 +84,13 @@ export default class ExcelService extends Service {
             cell.t = 's';
           }
 
+          //support passing more cell options
+          cell = options.callbackPerCell?.(cellValue, cell) || cell;
+
           ws[cell_ref] = cell;
         }
       }
+
       if (range.s.c < 10000000) {
         ws['!ref'] = XLSX.utils.encode_range(range);
       }
@@ -119,7 +132,7 @@ export default class ExcelService extends Service {
     });
 
     let output = new Blob([s2ab(wbout)], { type: 'application/octet-stream' });
-    
+
     if (options.download) {
       saveAs(output, options.fileName);
     }

index.js

@@ -3,8 +3,9 @@
 module.exports = {
   name: require('./package').name,
 
-  included(app) {
-    this._super.included.apply(this, arguments);
-    app.import('vendor/Blob.js');
+  options: {
+    babel: {
+      plugins: [require.resolve('ember-auto-import/babel-plugin')],
+    },
   },
 };