[dependabot]

Bumps mobx from 6.16.1 to 7.0.6.

Release notes

Sourced from mobx's releases.

mobx@7.0.6

Patch Changes

• 4b1c8d3ea2b3de1a2ae852fd5631e33d28a82b15 #4721 Thanks @​giaBaoJS! - fix: assigning length on an observable array now respects intercept. A cancelled or modified splice used to be overridden by a direct write to the backing array, which truncated it without notifying observers and made the next mutation throw "Modification exception". A non-integer length now throws "Out of range" before touching the array.

• 60be47cab0926d12f22449ec6c809fb5ec6601c4 #4716 Thanks @​AcEKaycgR! - fix: observable.box(array) no longer warns under observableRequiresReaction when a spy is active. The create spy event now reports newValue as the value itself rather than a string, matching the declared IBoxDidChange type. Previously the constructor stringified the value, and stringifying an observable array reads its length, which counted as an observable read outside a reactive context. Spy listeners that relied on newValue being a string for create events will now receive the raw value.

• 3551aeb051ff922717b03c4fbc04a6b98f7f3b3e #4717 Thanks @​breken-ai! - Remove the signal abort listener when a reaction disposes itself (r.dispose() or a resolved when), so long-lived AbortSignals no longer accumulate listeners that keep disposed reactions in memory

• 7e4e27dbfbf0b56770a11e9cba913e5d49c0c6f8 #4718 Thanks @​breken-ai! - observe/spy add events of an observable Set now report the value that was actually stored (e.g. the observable copy of a plain object), matching ObservableMap and observable arrays, so set.has(change.newValue) holds

mobx@7.0.5

Patch Changes

• 105d66d73529812a8eddc0847891e7f0c574e129 #4713 Thanks @​xaviergonz! - perf: reduce memory used by large, mostly unobserved state. intercept / observe handler arrays are allocated at their exact size, an observable's internal observers Set is released once its last observer leaves, observable objects created with the same deep / autoBind options share one default annotation instead of allocating their own, and endBatch() skips the unobservation pass when nothing is pending.

mobx@7.0.4

Patch Changes

• 7d85a68fb7e449650535aba22e47ce4d21bfbc10 #4592 Thanks @​VimHax! - Extend IReactionDisposer with Disposable

• 01211a698b64ea94de8e5f276ff8235fcf8ddf96 #4700 Thanks @​kubk! - Fix onBecomeObserved not firing for dependencies gained when an observed computed is recomputed inside an action.

• 6e0a03ef74750b3040c76d3ecc14c4adf202b95a #4710 Thanks @​kubk! - Use TypeScript's built-in NoInfer utility instead of a local compatibility alias.

mobx@7.0.3

Patch Changes

• 6f002b8e543ca39d3ee23681e28848d7f1724fae #4696 Thanks @​gesposito! - perf: add a node export condition that routes Node and Bun to the existing dist/index.js entry, which picks the prebaked development or production CJS build once at require time. importing mobx in Node no longer executes the env-agnostic dist/mobx.mjs with per-call NODE_ENV checks, and mixing import and require in one Node app now yields a single mobx instance.

mobx@7.0.2

Patch Changes

• ec1b708026c1578e1c1f6c7bd90be18b26f7ce85 #4695 Thanks @​gesposito! - perf: evaluate NODE_ENV once at module scope in the env-agnostic esm bundles (dist/<pkg>.esm.js and dist/<pkg>.mjs) instead of at every __DEV__ call site. process.env is an exotic object in Node, so each check performed a real environment lookup on hot paths; consumers that execute these files as-is (Node ESM, vitest, SSR) see roughly 10x faster observable writes in dev mode. All env-set artifacts and bundler output are unchanged.

• 6d8b5fa6c7596d7e5b16e55e3121d81c0c5bb21a #4672 Thanks @​chatman-media! - Fix ObservableSet.replace emitting spurious delete/add events (and triggering reactions) for values that are unchanged. It now only fires delete for removed values and add for newly added ones, mirroring ObservableMap.replace.

  Note: because replace no longer clears and re-adds every value, the iteration order after replace changes in a (subtle but observable) way. Surviving values now keep their original relative position and newly added values are appended, instead of the whole set being reordered to match the argument. For example, set(["a", "b", "c"]).replace(["d", "b", "a"]) previously iterated as d, b, a, and now iterates as a, b, d. This is arguably the more correct behavior (unchanged values are genuinely unchanged), but if you relied on replace reordering the set to match its argument, you may need to adjust.

mobx@7.0.1

Patch Changes

• 9444c624b957b489875e1c6b45deb290034ce4e9 #4694 Thanks @​mrpmohiburrahman! - fix: onBecomeObserved is now called for the dependencies of a computed that becomes observed while serving a cached value. Previously, observation only cascaded when the newly observed computed also happened to recompute, so an observable with a live observer chain up to a running reaction could still report itself as unobserved and never fire its hook.

• 53bb83fdf455a4e606bb721ea10040ded7c57796 #4683 Thanks @​gesposito! - perf: fast-path primitives in deepEnhancer. Writing a primitive into a deep observable no longer runs the observable/array/plain-object/Map/Set/function type checks; primitives can never be made observable, so they are returned immediately. Creating an observable array of primitives is ~4x faster, and observable Set/Map writes are ~20-25% faster in the perf suite.

• 030498d6b2bfe4cc27340fed8c706177cb3b28e1 #4684 Thanks @​a-y-ibrahim! - Fix a stack overflow ("Maximum call stack size exceeded") that could occur when an onBecomeUnobserved handler disposes a Reaction. Disposing a Reaction re-enters endBatch(), which used to recurse into the same pendingUnobservations drain loop instead of letting the already-running outer loop pick up the newly queued items, causing unbounded stack depth for long enough chains.

• a9086076b9ead1a9c933215bffaa9b57d44f6829 #4681 Thanks @​spokodev! - Fix ObservableSet union, intersection and symmetricDifference to return results in receiver order, matching native Set, when the argument is a plain Set.

... (truncated)

Commits

• ed5e082 Version Packages (#4719)
• 3551aeb fix: remove abort listener when a reaction disposes itself (#4717)
• 7e4e27d fix: report the stored value in ObservableSet add events (#4718)
• 4b1c8d3 fix: respect intercept when assigning length on observable arrays (#4721)
• 60be47c fix: report the boxed value itself in the create spy event (#4716)
• 404c6e0 Version Packages (#4714)
• 105d66d refactor: improve observer handling and memory management in tests (#4713)
• d9f7449 Version Packages (#4711)
• f78cb16 Clean up reactions from suspended observer render (#4709)
• e72c530 Version Packages (#4701)
• Additional commits viewable in compare view

[github-actions]

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[dependabot]

Superseded by #2958.