Firebase Cloud Function 中的本地化错误

Question

When executed in firebase cloud functions, the following command returns the American format instead of the localised one. However, it works well in browsers.

price.toLocaleString("pt-BR", {
  maximumFractionDigits: 2
});

Is there any way toLocaleString() works properly in firebase cloud functions?

Update:

let price = 1456.21
let formattedPrice = price.toLocaleString("pt-BR", {maximumFractionDigits: 2});

//Value of formattedPrice expected: 1.456,21 (it works in browsers).
//Value of formattedPrice returned in Firebase Cloud Functions: 1,456.21

Maybe it something related to the default ICU of Node (--with-intl=small-icu). To support internationalization, it seems the value should be --with-intl=full-icu.

https://nodejs.org/api/intl.html#intl_options_for_building_node_js

Answer 1

⚠️ intl seems no longer active/supported (last version is 4yo...).

I've achieved adding the real intl as follow:

1. Add full-icu dependencies on your Firebase Cloud Functions: npm install full-icu --save
2. Edit you functions (after a successful deployment) on console.cloud.google.com (don't forget to select the right google dev project)
3. Add NODE_ICU_DATA env var with value node_modules/full-icu
4. Save and wait 1 or 2 min for the functions to be deploy.

Furter update will not remove this env, and I was able to use Intl apis from Luxon successfully.

Answer 2

You shouldn't depend on special flags for building the version of node used in Cloud Functions. What you can do instead is pull in a module that deals with formatting locale strings. For example, you can use the intl module:

npm install intl

The use this:

const intl = require('intl')
const format = intl.NumberFormat("pt-BR", {maximumFractionDigits: 2})
console.log(format.format(price))