Possible bug when getting document channels if PS is not in English?

[sttk3]

Qu’ils mangent de la batchPlay!

const photoshop = require('photoshop') ;
const { app } = photoshop ;
const { batchPlay } = photoshop.action ;

/**
  * get indexes for all channels of a document. 
  * not sure if indexes or indices should be used
  * @param {Number} docID target document id
  * @return {Promise<Array<Number>>}
*/
const getChannelIndexes = async (docID) => {
  const retval = await batchPlay(
    [
      {
        "_obj": "multiGet", 
        "_target": [
          {
            "_ref": "document", 
            "_id": docID
          }
        ], 
        "extendedReference": [
          [
            "itemIndex"
          ], 
          {
            "_obj": "channel", 
            "index": 1, 
            "count": -1
          }
        ], 
        "options": {
          "failOnMissingProperty": false, 
          "failOnMissingElement": false
        }, 
        "_options": {
          "dialogOptions": "dontDisplay"
        }
      }
    ], 
    
    {}
  ) ;

  const res = retval[0].list.map((item) => {return item.itemIndex}) ;
  return res ;
} ;

/**
  * get channel by index
  * @param {Number} docID target document id
  * @param {Number} index target channel index
  * @return {Promise<any>} {channelName: String, itemIndex: Number, count: Number, visible: Boolean, histogram: Array<Number>}
*/
const getChannelByIndex = async (docID, index) => {
  const retval = await batchPlay(
    [
      {
        "_obj": "get", 
        "_target": [
          {
            "_ref": "channel", 
            "_index": index
          }, 
          {
            "_ref": "document", 
            "_id": docID
          }
        ], 
        "_options": {
          "dialogOptions": "dontDisplay"
        }
      }
    ], 

    {}
  ) ;

  return retval[0] ;
}

const main = async () => {
  const docID = app.activeDocument.id ;
  const indexes = await getChannelIndexes(docID) ;
  const channels = await Promise.all(indexes.map(async (index) => {
    return await getChannelByIndex(docID, index) ;
  })) ;
  console.log(channels) ;
  // --> (3) [{…}, {…}, {…}]
} ;