lingui extract format --minimal not converting old messages.json files and produces faulty statistics.

The lingui extract --format works when converting existing messages.json files from minimal to lingui, but not vice versa. The output format is wrong, and the statistics are faulty (claims that no translations are missing).

Setup

lingui-cli@1.4.2, lingui-react@1.4.1, babel-plugin-lingui-extract-messages@1.1.10, lingui-conf@0.12.0, Windows 10

How to reproduce?

Using following test component:

import React from 'react'
import { Trans, Plural } from 'lingui-react'

const Testi18n = () => {
  return (
    <div>
      <Trans>This is a test</Trans>
      <Plural
        value={messagesCount}
        one="There's # message in your inbox"
        other="There're # messages in your inbox"
      />
    </div>
  )
}

export default Testi18n

(1) First, add locales -> will have messages.json files with only “{}” as content.

(2) lingui extract --format minimal produces messages.json in the following format:

{
  "This is a test": "",
  "{messagesCount, plural, one {There's # message in your inbox} other {There're # messages in your inbox}}": ""
}

and following statistics

Catalog statistics:
┌──────────┬─────────────┬─────────┐
│ Language │ Total count │ Missing │
├──────────┼─────────────┼─────────┤
│ en_US    │      2      │    2    │
│ fi_FI    │      2      │    2    │
└──────────┴─────────────┴─────────┘

(3) lingui extract --format lingui produces messages.json in following format:

{
  "This is a test": {
    "origin": [
      [
        "reactjs\\scenes\\Testi18n.jsx",
        7
      ]
    ]
  },
  "{messagesCount, plural, one {There's # message in your inbox} other {There're # messages in your inbox}}": {
    "origin": [
      [
        "reactjs\\scenes\\Testi18n.jsx",
        8
      ]
    ]
  }
}

and following statistics

Catalog statistics:
┌──────────┬─────────────┬─────────┐
│ Language │ Total count │ Missing │
├──────────┼─────────────┼─────────┤
│ en_US    │      2      │    2    │
│ fi_FI    │      2      │    2    │
└──────────┴─────────────┴─────────┘

(4) Running lingui extract --format minimal produces messages.json files in this format:

{
  "This is a test": {
    "origin": [
      [
        "reactjs\\scenes\\Testi18n.jsx",
        7
      ]
    ]
  },
  "{messagesCount, plural, one {There's # message in your inbox} other {There're # messages in your inbox}}": {
    "origin": [
      [
        "reactjs\\scenes\\Testi18n.jsx",
        8
      ]
    ]
  }
}

and following statistics

Catalog statistics:
┌──────────┬─────────────┬─────────┐
│ Language │ Total count │ Missing │
├──────────┼─────────────┼─────────┤
│ en_US    │      2      │    0    │
│ fi_FI    │      2      │    0    │
└──────────┴─────────────┴─────────┘

[tricoder42]

I agree, lingui format is overkill for most usecases. The change is ready in next-2 branch and will be released soon in 2.x release.

[tricoder42]

Fixed in @lingui/cli@2.0.0. See release docs