ts-jest support

[kopax-polyconseil]

Is your feature request related to a problem? Please describe.

We use lingui since a while and despite it's cool to use, our app now gets bigger and the amount of unit tests too. For this reason, we wanted to switch to ts-jest instead of babel-jest to improve our tests perfs, but it is not possible as lingui does not support ts-jest.

With ts-jest, we got this error everywhere:

    TypeError: (0 , macro_1.t) is not a function

Describe proposed solution

Support for ts-jest

Describe alternatives you've considered

Removing lingui as we don't really need translation.

Additional context

{
    "@lingui/core": "^3.13.2",
    "@lingui/react": "^3.13.2",
    "@lingui/cli": "^3.13.2",
    "@lingui/macro": "^3.13.2",
}

[kopax-polyconseil]

I started to use a mock for jest, unfortunately, this is what I did and it is not ready yet:

export const t = (text: string | Array<string>) => {
  if (typeof text === text) {
    return text.trim()
  } else if (text instanceof Array) {
    return text.map((t) => t.trim()).join(' ')
  }
  return text
}

type Plural = {
  value: number
  one: string
  other: string
}

export const plural = (count: number | Plural, plural: Plural) => {
  if (isNaN(count as number)) {
    plural = count as Plural
    if (plural.value <= 1) {
      return plural.one.replace('#', `${plural.value}`)
    }
    return plural.other.replace('#', `${plural.value}`)
  }
  if (count <= 1) {
    return plural.one.replace('#', `${count}`)
  }
  return plural.other.replace('#', `${count}`)
}

If guys want to help get further :)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[timofei-iatsenko]

@andrii-bodnar @kopax-polyconseil supporting also typescript transformation in additional to SWC and babel plugin has no sense as it means complete rewrite the whole macro as typescrit transformation and supporting all 3 versions. Where typescript transformations has no advantages over SWC or babel.

@kopax-polyconseil if you want to speedup your test it's better to try SWC, as it's dozen times faster than typescript and babel. Lingui plugin for SWC is almost ready. #1224