(core) Currency from grist column is persistent when exporting to excel

Summary:
- when grist table is exported, currency is check and introduced in cell format in the form of "[currency symbol] [value]" (for example: zł 10000, $ 5000) . It's not what some cultures should display currences, but it's close enought
- when no symbol is defined for the currency, currency 3 letters code is used instead
- when currency is unknown, we are falling back to "$"

Test Plan: - nbrowser test scenario added for that purpose, please check Currences.xlsx to see output format exported.

Reviewers: georgegevoian

Reviewed By: georgegevoian

Differential Revision: https://phab.getgrist.com/D3886

app/server/lib/ExcelFormatter.ts

@@ -1,10 +1,11 @@
 import {CellValue} from 'app/common/DocActions';
-import * as gutil from 'app/common/gutil';
 import * as gristTypes from 'app/common/gristTypes';
+import * as gutil from 'app/common/gutil';
 import {NumberFormatOptions} from 'app/common/NumberFormat';
 import {FormatOptions, formatUnknown, IsRightTypeFunc} from 'app/common/ValueFormatter';
 import {GristType} from 'app/plugin/GristData';
 import {decodeObject} from 'app/plugin/objtypes';
+import getSymbolFromCurrency from 'currency-symbol-map';
 import {Style} from 'exceljs';
 import moment from 'moment-timezone';
 
@@ -64,7 +65,13 @@ class BaseFormatter {
     // those formats strings are the defaults that LibreOffice Calc is using.
     if (this.widgetOptions.numMode) {
       if (this.widgetOptions.numMode === 'currency') {
-        style.numFmt = '[$$-409]#,##0.00';
+        // If currency name is undefined or null, it should be cast to unknown currency, because
+        // "getSymbolFromCurrency" expect argument to be string
+        const currencyName = this.widgetOptions.currency??"";
+        const currencySymbol = getSymbolFromCurrency(currencyName)
+          ?? this.widgetOptions.currency
+          ?? "$";
+        style.numFmt = `"${currencySymbol} "#,##0.000`;
       } else if (this.widgetOptions.numMode === 'percent') {
         style.numFmt = '0.00%';
       } else if (this.widgetOptions.numMode === 'decimal') {

package.json

@@ -130,6 +130,7 @@
     "cookie": "0.5.0",
     "cookie-parser": "1.4.3",
     "csv": "4.0.0",
+    "currency-symbol-map": "5.1.0",
     "diff-match-patch": "1.0.5",
     "dompurify": "3.0.0",
     "double-ended-queue": "2.1.0-0",

yarn.lock

@@ -2747,6 +2747,11 @@ csv@4.0.0:
     csv-stringify "^4.3.1"
     stream-transform "^1.0.7"
 
+currency-symbol-map@5.1.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/currency-symbol-map/-/currency-symbol-map-5.1.0.tgz#59531fbe977ba95e8d358e90e3c9e9053efb75ad"
+  integrity sha512-LO/lzYRw134LMDVnLyAf1dHE5tyO6axEFkR3TXjQIOmMkAM9YL6QsiUwuXzZAmFnuDJcs4hayOgyIYtViXFrLw==
+
 cycle@1.0.x:
   version "1.0.3"
   resolved "https://registry.npmjs.org/cycle/-/cycle-1.0.3.tgz"