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feat: replace zarr.js with zarrita.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,31 +1,2 @@ | ||
| import { addCodec } from 'zarr'; | ||
| import type { CodecConstructor } from 'numcodecs'; | ||
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| type CodecModule = { default: CodecConstructor<Record<string, unknown>> }; | ||
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| const cache: Map<string, Promise<CodecModule['default']>> = new Map(); | ||
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| function add(name: string, load: () => Promise<CodecModule>): void { | ||
| // Cache import to avoid duplicate loads | ||
| const loadAndCache = () => { | ||
| if (!cache.has(name)) { | ||
| const promise = load() | ||
| .then((m) => m.default) | ||
| .catch((err) => { | ||
| cache.delete(name); | ||
| throw err; | ||
| }); | ||
| cache.set(name, promise); | ||
| } | ||
| return cache.get(name)!; | ||
| }; | ||
| addCodec(name, loadAndCache); | ||
| } | ||
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| // Add dynmaically imported codecs to Zarr.js registry. | ||
| add('lz4', () => import('numcodecs/lz4')); | ||
| add('gzip', () => import('numcodecs/gzip')); | ||
| add('zlib', () => import('numcodecs/zlib')); | ||
| add('zstd', () => import('numcodecs/zstd')); | ||
| add('blosc', () => import('numcodecs/blosc')); | ||
| add('jpeg2k', () => import('./jpeg2k')); | ||
| import { registry } from '@zarrita/core'; | ||
| registry.set('jpeg2k', () => import('./jpeg2k').then((m) => m.default)); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,39 +1,21 @@ | ||
| import type { AsyncStore } from 'zarr/types/storage/types'; | ||
| import type { AsyncReadable } from '@zarrita/storage'; | ||
| import QuickLRU from 'quick-lru'; | ||
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| export class LRUCacheStore<S extends AsyncStore<ArrayBuffer>> { | ||
| cache: QuickLRU<string, Promise<ArrayBuffer>>; | ||
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| export class LRUCacheStore<S extends AsyncReadable> { | ||
| cache: QuickLRU<string, Promise<Uint8Array | undefined>>; | ||
| constructor(public store: S, maxSize: number = 100) { | ||
| this.cache = new QuickLRU({ maxSize }); | ||
| } | ||
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| getItem(...args: Parameters<S['getItem']>) { | ||
| get(...args: Parameters<S['get']>) { | ||
| const [key, opts] = args; | ||
| if (this.cache.has(key)) { | ||
| return this.cache.get(key)!; | ||
| } | ||
| const value = this.store.getItem(key, opts).catch((err) => { | ||
| const value = this.store.get(key, opts).catch((err) => { | ||
| this.cache.delete(key); | ||
| throw err; | ||
| }); | ||
| this.cache.set(key, value); | ||
| return value; | ||
| } | ||
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| async containsItem(key: string) { | ||
| return this.cache.has(key) || this.store.containsItem(key); | ||
| } | ||
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| keys() { | ||
| return this.store.keys(); | ||
| } | ||
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| deleteItem(key: string): never { | ||
| throw new Error('deleteItem not implemented'); | ||
| } | ||
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| setItem(key: string, value: ArrayBuffer): never { | ||
| throw new Error('setItem not implemented'); | ||
| } | ||
| } |
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