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feat(client): remove data mutation (#32)

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* feat(client): remove data mutation

* chore: address comments and fix some other issues

* chore: send the most recent cache upon subscription
This commit is contained in:
Alex Inkin
2022-05-27 01:23:56 +03:00
committed by GitHub
parent 35973d7aef
commit 6f6c26acd4
8 changed files with 84 additions and 110 deletions
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38
client/lib/store.ts
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@@ -5,7 +5,7 @@ import BTree from 'sorted-btree'
export interface StashEntry {
revision: Revision
undo: Operation[]
undo: Operation<unknown>[]
}
export class Store<T extends { [key: string]: any }> {
@@ -70,20 +70,12 @@ export class Store<T extends { [key: string]: any }> {
this.processStashed(revision.id)
}
private handleDump (dump: Dump<T>): void {
Object.keys(this.cache.data).forEach(key => {
if (dump.value[key] === undefined) {
delete this.cache.data[key]
}
})
Object.entries(dump.value).forEach(([key, val]) => {
(this.cache.data as any)[key] = val
})
this.stash.deleteRange(this.cache.sequence, dump.id, false)
private handleDump ({ value, id }: Dump<T>): void {
this.cache.data = { ...value }
this.stash.deleteRange(this.cache.sequence, id, false)
this.updateWatchedNodes('')
this.updateSequence(dump.id)
this.processStashed(dump.id + 1)
this.updateSequence(id)
this.processStashed(id + 1)
}
private processStashed (id: number): void {
@@ -95,9 +87,7 @@ export class Store<T extends { [key: string]: any }> {
let stashEntry = this.stash.get(this.stash.maxKey() as number)
while (stashEntry && stashEntry.revision.id > id) {
stashEntry.undo.forEach(u => {
applyOperation(this.cache.data, u)
})
stashEntry.undo.forEach(u => applyOperation(this.cache, u))
stashEntry = this.stash.nextLowerPair(stashEntry.revision.id)?.[1]
}
}
@@ -105,19 +95,17 @@ export class Store<T extends { [key: string]: any }> {
private applyRevisions (id: number): void {
let revision = this.stash.get(id)?.revision
while (revision) {
let undo: Operation[] = []
let undo: Operation<unknown>[] = []
let success = false
try {
revision.patch.forEach(op => {
const u = applyOperation(this.cache.data, op)
const u = applyOperation(this.cache, op)
if (u) undo.push(u)
})
success = true
} catch (e) {
undo.forEach(u => {
applyOperation(this.cache.data, u)
})
undo.forEach(u => applyOperation(this.cache, u))
undo = []
}
@@ -163,6 +151,6 @@ export class Store<T extends { [key: string]: any }> {
}
private isRevision (update: Update<T>): update is Revision {
return !!(update as Revision).patch
return 'patch' in update
}
}
}