Background

This PR normalizes Bedrock document names derived from part.filename by stripping file extensions before sending requests in order to avoid Bedrock throwing an exception.

Summary

• Added a shared stripFileExtension(filename: string) helper to @ai-sdk/provider-utils.
• Exported the helper from provider-utils public index.
• Updated Amazon Bedrock chat message conversion to use the helper for document name when part.filename is present.
• Updated/added tests for Bedrock conversion behavior.
• Added unit tests for the new helper.

Manual Verfication

import { bedrock } from '@ai-sdk/amazon-bedrock';
import { generateText } from 'ai';
import fs from 'fs';
import { run } from '../../lib/run';

run(async () => {
  const result = await generateText({
    model: bedrock('global.anthropic.claude-sonnet-4-5-20250929-v1:0'),
    messages: [
      {
        role: 'user',
        content: [
          {
            type: 'text',
            text: 'Summarize the content of this text file in a few sentences.',
          },
          {
            type: 'file',
            data: fs.readFileSync('./data/error-message.txt'),
            mediaType: 'text/plain',
            filename: 'error-message.txt',
          },
        ],
      },
    ],
  });

  console.log('Response:', result.text);
  console.log();
  console.log('Finish reason:', result.finishReason);
  console.log('Usage:', result.usage);
});

Checklist

• Tests have been added / updated (for bug fixes / features)
• Documentation has been added / updated (for bug fixes / features)
• A patch changeset for relevant packages has been added (for bug fixes / features - run pnpm changeset in the project root)
• I have reviewed this pull request (self-review)

Future Work

n/a

Related Issues

Fixes #11518