AI prompt for creating message files

creating-message-files.txt

# Prompt

Can you write a jscodeshift transform that turns a file like

```
import { defineMessages } from 'react-intl';

export default defineMessages({
  "title.juan": "Screening Results",
  "subtitle.juan": "Your {{- date}} results indicate you may have {{level}} {{resultType}}.",
});
```


Into something like

```
import { defineMessages } from 'react-intl';

export default defineMessages({
  "title.test": {
    "id": "title.test",
    defaultMessage: "Screening Results",
    "description": ""
  }
  "subtitle.juan": {
    "id":"subtitle.juan",
    defaultMessage: "Your { date} results indicate you may have {level} {resultType}.",
  },
  description: ""
});
```

Can you be sure to include something that transform parts like {{-date}} to {date} and {{level}} to {level} inside of the strings?

# Response

Sure! Below is a jscodeshift transform that accomplishes the task you described. This transform will convert the messages to the desired format and replace the placeholders in the strings.

```javascript
module.exports = function(fileInfo, api, options) {
  const j = api.jscodeshift;
  const root = j(fileInfo.source);

  // Function to transform the message string
  function transformMessageString(message) {
    return message.replace(/{{-?\s*(\w+)\s*}}/g, '{$1}');
  }

  // Find the default export that uses defineMessages
  root.find(j.ExportDefaultDeclaration)
    .find(j.CallExpression, { callee: { name: 'defineMessages' } })
    .forEach(path => {
      const properties = path.node.arguments[0].properties;

      properties.forEach(property => {
        const key = property.key.name || property.key.value;
        const value = property.value.value;

        // Transform the message string
        const transformedMessage = transformMessageString(value);

        // Create the new object structure
        property.value = j.objectExpression([
          j.property('init', j.identifier('id'), j.literal(key)),
          j.property('init', j.identifier('defaultMessage'), j.literal(transformedMessage)),
          j.property('init', j.identifier('description'), j.literal(''))
        ]);
      });
    });

  return root.toSource();
};
```

This transform script does the following:
1. It finds the default export that uses `defineMessages`.
2. It iterates over the properties of the object passed to `defineMessages`.
3. It transforms the message strings by replacing `{{- date}}` with `{date}` and similar placeholders.
4. It creates a new object structure for each message with `id`, `defaultMessage`, and `description` properties.

To run this transform, you would use jscodeshift with the script provided. For example:

```sh
jscodeshift -t path/to/transform.js path/to/your/file.js
```

This will apply the transformation to your file and produce the desired output.