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kenneth 8ec8b9a13e Add @aris/data-source-tfl package

TfL data source for tube, overground, and Elizabeth line alerts.

- Fetches line statuses and filters to minor/major delays and closures
- Sorts alerts by severity, then by proximity to user location
- Caches station data after first fetch
- Uses arktype for API response validation
- Supports API injection for testing

Co-authored-by: Ona <no-reply@ona.com>

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packages

Add @aris/data-source-tfl package

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Add @aris/data-source-tfl package

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README.md

Add @aris/data-source-tfl package

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tsconfig.json

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README.md

aris

To install dependencies:

bun install

Packages

@aris/data-source-tfl

TfL (Transport for London) data source for tube, overground, and Elizabeth line alerts.

Testing

cd packages/aris-data-source-tfl
bun run test

Fixtures

Tests use fixture data from real TfL API responses stored in fixtures/tfl-responses.json.

To refresh fixtures:

bun run fetch-fixtures