feat: adds LocalStorageWithOffScreenStore, to be used in the future as a ba…

[danjm]

…ckup of critical data in PersistedStateManager

Description

This PR adds a class that extends the BaseStore and, in a future PR, will be used with the PersistanceManager to backup vault data in a location separate from storage.local. The data store used in this case is the localStorage within the offscreen document. localStorage is not available to us in the service worker, which is why we are using the one available to us in the offscreen document

Related issues

Fixes:

Manual testing steps

1. Go to this page...

Screenshots/Recordings

Before

After

Pre-merge author checklist

• [ ] I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• [ ] I've completed the PR template to the best of my ability
• [ ] I’ve included tests if applicable
• [ ] I’ve documented my code using JSDoc format if applicable
• [ ] I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• [ ] I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• [ ] I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions[bot]]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[metamaskbot]

Builds ready [eb231bd]

• builds: chrome, firefox
• builds (flask): chrome, firefox
• builds (MMI): chrome
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1577 ± 43 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1403	1753	1576	89	43
		domContentLoaded	1396	1719	1555	84	40
		load	1404	1757	1577	89	43
		domInteractive	23	104	44	28	14
		backgroundConnect	10	62	23	16	8
		firstReactRender	15	97	52	27	13
		getState	4	58	12	14	7
		initialActions	0	1	0	0	0
		loadScripts	1007	1255	1124	70	34
		setupStore	7	76	21	21	10
		uiStartup	1552	2213	1833	156	75

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 136 Bytes (0.00%)
• ui: 0 Bytes (0.00%)
• common: 100 Bytes (0.00%)

[metamaskbot]

Builds ready [a004bbf]

• builds: chrome, firefox
• builds (flask): chrome, firefox
• builds (MMI): chrome
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7, 8
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1942 ± 211 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	303	3796	1748	716	344
		domContentLoaded	1629	3732	1909	435	209
		load	1634	3786	1942	440	211
		domInteractive	27	412	63	82	39
		backgroundConnect	9	72	35	21	10
		firstReactRender	15	79	34	21	10
		getState	6	59	17	16	7
		initialActions	0	1	0	0	0
		loadScripts	1212	2993	1447	368	177
		setupStore	8	53	15	13	6
		uiStartup	1885	4042	2189	447	214

[github-actions[bot]]

This PR has been automatically marked as stale because it has not had recent activity in the last 90 days. It will be closed in 7 days. Thank you for your contributions.

[github-actions[bot]]

This PR was closed because there has been no follow up activity in 7 days. Thank you for your contributions.