False Positive `non_reactive_update` warning when use `SvelteMap` with binding child components

[tbashiyy]

Describe the bug

There is non_reactive_update warning when using SvelteMap with binding child components.

Reproduction

https://svelte.dev/playground/hello-world?version=5.35.1#H4sIAAAAAAAAE71SXWvDMAz8K0IMukFo3t20MAZ7Gwz2uIzWTdTWkMjGVpqVkP8-3PQro3sdxhid5dPd4Q5Z14QKX3UVCN5tMGL2BCu2vPSki1gtG1dqoRW02rPhLbQ7YmgCwepjT5XQm3YraI3sYG24jB3FzlQlFLZ2loklYIIbU1FA9dmhHFwcGQFMzgKenZuGIxsmuNaB7uGFZTnSKcwGUFknxnIA3zAFSBc555yFwhsnUGneznOUkGPExdTOeoEOLrKhh423NUwGtvRk2chhMrt58XI2cuqephfkJG5oj7sigagd5jBpra_K4SrC4TJ2DkztVUbGTb0mn8BwLh6fZjln6WDjaGlY2VVITFpdCaNxTFDoW1CJb6hP_gj6t_Jx3Hdu_z30c1zdTWC9ui3ViGwOD85bF8apjdP4SlC0qVrDJapN_Oz9D-9Uu7r8AgAA

Logs

System Info

System:
    OS: macOS 15.5
    CPU: (10) arm64 Apple M2 Pro
    Memory: 79.36 MB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 24.3.0 - ~/.nodenv/versions/24.3.0/bin/node
    npm: 11.4.2 - ~/.nodenv/versions/24.3.0/bin/npm
    pnpm: 10.12.4 - ~/.nodenv/versions/24.3.0/bin/pnpm
  Browsers:
    Chrome: 137.0.7151.120
    Safari: 18.5

Severity

annoyance

[tbashiyy]

If we should fix this, I want to try fixing this as first contribute to svelte :)
(I'm not sure difficulty)

[paoloricciuti]

This is expected...bind means: I will reassign the whole object which means the map needs to be state or it would not be reflected...if you are not reassigning the whole map but just using methods on it you can use it without state but also without bind

[tbashiyy]

I got it! thank you!