Bump mobx from 4.5.2 to 5.15.0

[dependabot-preview]

Bumps mobx from 4.5.2 to 5.15.0.

Changelog

Sourced from mobx's changelog.

5.15.0

The minimum required TypeScript version is now 3.6

• Fixed flow typings with Typescript v3.6. This means that version of Typescript is required when using flows.
• Cancelled flows now reject with a FlowCancellationError instance whose error message is the same as in previous versions ("FLOW_CANCELLED") so this is not breaking. #2172 by @​vonovak
• Fix running mobx in web worker #2184 by @​shahata
• Fixed flow typings for Facebook's Flow. A new CancellablePromise Flow type is exported. #2164 by @​vonovak
• Added support for symbol keys on observable properties (MobX 5 only). #2175 by @​StephenHaney

5.14.2

• Fixed installation issue trying to run postinstall hook for a website #2165.

5.14.1 / 4.14.1

• Fixed a possible issue with action stack errors and multiple mobx versions installed at the same time #2135.
• Added comparer.shallow for shallow object/array comparisons #1561.
• Fixed disposing an interception within an interception throwing an error #1950.

5.14.0 / 4.14.0

• Added experimental reactionRequiresObservable & observableRequiresReaction config #2079, Docs
• Added experimental requiresObservable config to reaction, autorun & when options #2079, Docs

5.13.1 / 4.13.1

• Don't use global and self keywords unless defined. Fixes #2070.
• onBecome(Un)Observed didn't trigger when using number as key of observable map. Fixes #2067.
• Exposed _startAction and _endAction to be able to start and action and finish it without needing a code block. This is low level stuff you shouldn't need that's mostly useful for library creators.

5.13.0 / 4.13.0

• Fixed potential memory leak in observable maps, when non-primitive values are used as keys. Fixes #2031 through #2032.
• Added support to store additional non-observable(!) fields (string or symbol based) on array, to better reflect behavior of MobX 4. Fixes #2044 through #2046

5.11.0 / 4.12.0

• Added computedConfigurable config #2011, #2013

4.11.0

BREAKING CHANGE

Reverted the support of Symbols in general in MobX 4, as it gives to many potential build errors and increases the system requirements for MobX 4 (which was an oversight in 4.10.0). Apologies for the breaking change (lack of new major version numbers). If lock files are properly used however, no harm should be caused by this change.

• Reverted Symbol support in observable maps and objects. Reverts #1944 through #1988. Fixes #1986, #1987

5.10.1

... (truncated)

Commits

• 32350dc Published version 5.15.0
• 5ddb86e funding and docs updates
• 728ad70 Fix flow typings [requires TS3.6] (#2160)
• 4d56bf6 Observable decorator on computed symbol keys (#2175)
• e5a2170 cancelled flow() to reject with new FlowCancellationError (#2172)
• fec0ff9 Fix typo in observer documentation (#2189)
• 49f1ed9 improved docs
• 71e507c allow mobx to run in web worker (#2184)
• c42c6e5 Update 'What will Mobx react to' Link (#2177)
• 40a1406 Don't stale documentation issues
• Additional commits viewable in compare view

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