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(() => {\n const { handle, name } = rootValRef();\n return `reactiveStateBlob:${handle}/${name}`;\n })();\n\n const stateLock = opts?.lock\n ? await acquireLock({\n id: `lock:${_key}`,\n ...((opts?.lock && typeof opts.lock === \"object\") ? opts.lock : {}),\n })\n : undefined;\n\n const cache = persistentStateBlobReactive({\n ...opts,\n key: _key,\n getDefault,\n });\n\n return disposable(await cache.get(), (value) => {\n return stateLock?.release();\n }, true);\n}\n\nexport function persistentStateBlob>(\n opts: PersistentStateBlobOptions,\n): PersistentState {\n return {\n async get(): Promise {\n return normalizeValue(opts.getDefault, await blob.getJSON(opts.key));\n },\n set(value) {\n if (opts.log) {\n console.log(\"persistentStateBlob saving to blob:\", opts.key, \"=\", value);\n }\n return blob.setJSON(opts.key, value);\n },\n };\n}\n\nexport function persistentStateBlobReactive>(\n opts: PersistentStateBlobOptions,\n): PersistentState {\n return persistentStateReactive(persistentStateBlob(opts));\n}\n\nexport function persistentStateBlobLazy>(\n opts: PersistentStateBlobOptions,\n): PersistentState {\n return persistentStateLazy(persistentStateBlob(opts));\n}\n\nasync function normalizeValue(value: PersistentStateGetDefault, existing: unknown): Promise {\n if (value instanceof Function) {\n return value(existing);\n }\n return existing as T ?? value;\n}","deleted",false,"label",[36],"331df158-2760-11f0-86ff-569c3dd06744","README.md","331df1f8-2760-11f0-86ff-569c3dd06744",1,["D",1712685744365],0,"# reactiveStateBlob: wrap blob state in a proxy to autosave it on changes\n\n## Examples (full example at [@postpostscript/reactiveStateBlobExample](reactiveStateBlobExample))\n\n```typescript\nimport { reactiveStateBlob } from \"https://esm.town/v/postpostscript/reactiveStateBlob\"\n\nusing state = await reactiveStateBlob({\n viewCount: 0,\n rows: [] as {\n x: number;\n y: number;\n }[],\n});\n\nstate.viewCount += 1;\nstate.rows.push({\n x: Math.random(),\n y: Math.random(),\n});\n```\n\nThis infers the key from the name of the val that uses it. To specify it, pass the `key` option:\n\n```ts\nusing state = await reactiveStateBlob({\n viewCount: 0,\n rows: [] as {\n x: number;\n y: number;\n }[],\n}, {\n key: 'reactiveStateBlobExample.state',\n});\n```\n\n### Updating Schema\n\nIf you want to update the schema, or always verify the state that is pulled from the job, pass a function as the first argument:\n\n```typescript\nusing state = await reactiveStateBlob((existingState) => {\n return {\n viewCount: (existingState.viewCount ?? 0) as number,\n rows: (existingState.rows ?? []) as {\n x: number;\n y: number;\n }[],\n\tsomeNewField: (existingState.someNewField ?? \"\") as string,\n }\n})\n```\n\n### Options\n\n```typescript\nusing state = await reactiveStateBlob<{\n value: number;\n}>({\n value: 0,\n}, {\n log: true, // log when saving\n key: \"blobKey\", // blob key to fetch/save to\n timeout: 100, // ms, defaults to 10\n lock: true, // or LockOptions (see https://www.val.town/v/postpostscript/lock#options)\n})\n```\n\n## See Also\n\n[@postpostscript/counter](counter) (example at [@postpostscript/counterExample](counterExample))\n\nMigrated from folder: 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