INNER CODE UNIT · Python

_expand_dev_cors_origins

skygazer42/MimirQ · app/main.py:121

def _expand_dev_cors_origins(origins: list[str]) -> list[str]:
    """
    Dev-friendly CORS: add localhost/IP aliases for local FE ports.

    This prevents common UX issues when the frontend is opened via:
    - http://0.0.0.0:3000 (Next dev prints this by default)
    - http://127.0.0.1:3000
    - http://127.0.0.1:3100 (Playwright local prod-server checks)
    while backend env only allows http://localhost:3000.
    """
    if not origins:
        return origins
    if "*" in origins:
        return origins

    expanded = {origin for raw in origins if (origin := _normalize_dev_origin(raw))}

    local_schemes: set[str] = set()

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