# gt: General Translation CLI tool: Autoderive
URL: https://generaltranslation.com/en-US/docs/cli/features/autoderive.mdx
---
title: Autoderive
description: Automatically derive interpolated values in translation functions and JSX components
---

## Overview

When autoderive is enabled, interpolated values are parsed as if they were wrapped in [`derive()`](/docs/next/api/strings/derive). This generates separate translation entries for each possible value, preserving word agreement and conjugation across languages.

Autoderive works in two contexts:

- **Strings** — interpolated values in `t()`, `gt()`, and `msg()` calls
- **JSX** — expressions inside `<T>` components that reference const variable declarations

Autoderive is **disabled by default**.

## Configuration

Enable autoderive for both strings and JSX:

```json title="gt.config.json"
{
  "files": {
    "gt": {
      "parsingFlags": {
        "autoderive": true
      }
    }
  }
}
```

You can also enable autoderive selectively for just strings or just JSX:

```json title="gt.config.json"
{
  "files": {
    "gt": {
      "parsingFlags": {
        "autoderive": { "jsx": true, "strings": false }
      }
    }
  }
}
```

## String example

```jsx
const gt = useGT();
const role = isAdmin ? "admin" : "user";

// With autoderive enabled, this is parsed as derived:
gt(`Welcome back, ${role}!`);
// Generates:
//   "Welcome back, admin!" → "¡Bienvenido de nuevo, administrador!"
//   "Welcome back, user!"  → "¡Bienvenido de nuevo, usuario!"
```

Without autoderive, you must explicitly use [`derive()`](/docs/next/api/strings/derive) to get the same behavior.

## JSX example

```jsx
const label = condition ? "boy" : "girl";

<T>
  Hello, {label}
</T>
// Generates two translation entries:
//   "Hello, boy"  → "Hola, chico"
//   "Hello, girl" → "Hola, chica"
```

JSX autoderive resolves `const` variable declarations referenced inside `<T>` components. It supports:

- Ternary expressions (`const x = cond ? "a" : "b"`)
- Nested ternaries (`const x = a ? "small" : b ? "medium" : "large"`)
- String, number, and boolean literals
- String concatenation and template literals
- Chained const references (`const alias = base`)

<Callout type="warn">
**`const` only:** Only `const` declarations are supported. `let` and `var` variables produce a warning because they can be reassigned. Destructured variables (`const { x } = obj`) are not supported.
</Callout>

<Callout type="info">
**Note:** The `t` tagged template macro is unaffected — it handles derivation through its template literal syntax.
</Callout>

## Related

- [`derive()` function reference](/docs/next/api/strings/derive)
- [Auto JSX injection](/docs/cli/features/auto-jsx-injection)
- [Release notes: gt@2.13.0](/devlog/gt_v2_13_0)