--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/x/static/js/9206.bbf34514.chunk.js.map	Sat Oct 05 23:58:05 2024 +0000
@@ -0,0 +1,1 @@
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{ BgzipIndexedFasta } from '@gmod/indexedfasta'\nimport { FileLocation } from '@jbrowse/core/util/types'\nimport { openLocation } from '@jbrowse/core/util/io'\nimport IndexedFasta from '../IndexedFastaAdapter/IndexedFastaAdapter'\n\nexport default class BgzipFastaAdapter extends IndexedFasta {\n  public async setupPre() {\n    const fastaLocation = this.getConf('fastaLocation')\n    const faiLocation = this.getConf('faiLocation')\n    const gziLocation = this.getConf('gziLocation')\n    const fastaOpts = {\n      fasta: openLocation(fastaLocation as FileLocation, this.pluginManager),\n      fai: openLocation(faiLocation as FileLocation, this.pluginManager),\n      gzi: openLocation(gziLocation as FileLocation, this.pluginManager),\n    }\n\n    return { fasta: new BgzipIndexedFasta(fastaOpts) }\n  }\n}\n","import { IndexedFasta } from '@gmod/indexedfasta'\nimport {\n  BaseSequenceAdapter,\n  BaseOptions,\n} from '@jbrowse/core/data_adapters/BaseAdapter'\nimport { FileLocation, NoAssemblyRegion } from '@jbrowse/core/util/types'\nimport { openLocation } from '@jbrowse/core/util/io'\nimport { ObservableCreate } from '@jbrowse/core/util/rxjs'\nimport { SimpleFeature, Feature } from '@jbrowse/core/util'\nimport AbortablePromiseCache from '@gmod/abortable-promise-cache'\nimport QuickLRU from '@jbrowse/core/util/QuickLRU'\n\ninterface T {\n  refName: string\n  start: number\n  end: number\n  fasta: IndexedFasta\n}\n\nexport default class IndexedFastaAdapter extends BaseSequenceAdapter {\n  protected setupP?: Promise<{ fasta: IndexedFasta }>\n\n  private seqCache = new AbortablePromiseCache<T, string | undefined>({\n    cache: new QuickLRU({ maxSize: 200 }),\n    fill: async (args: T, signal?: AbortSignal) => {\n      const { refName, start, end, fasta } = args\n      return fasta.getSequence(refName, start, end, { ...args, signal })\n    },\n  })\n\n  public async getRefNames(opts?: BaseOptions) {\n    const { fasta } = await this.setup()\n    return fasta.getSequenceNames(opts)\n  }\n\n  public async getRegions(opts?: BaseOptions) {\n    const { fasta } = await this.setup()\n    const seqSizes = await fasta.getSequenceSizes(opts)\n    return Object.keys(seqSizes).map(refName => ({\n      refName,\n      start: 0,\n      end: seqSizes[refName]!,\n    }))\n  }\n\n  public async setupPre() {\n    const fastaLocation = this.getConf('fastaLocation') as FileLocation\n    const faiLocation = this.getConf('faiLocation') as FileLocation\n\n    return {\n      fasta: new IndexedFasta({\n        fasta: openLocation(fastaLocation, this.pluginManager),\n        fai: openLocation(faiLocation, this.pluginManager),\n      }),\n    }\n  }\n\n  public async getHeader() {\n    const loc = this.getConf('metadataLocation')\n    return loc.uri === '' || loc.uri === '/path/to/fa.metadata.yaml'\n      ? null\n      : openLocation(loc, this.pluginManager).readFile('utf8')\n  }\n\n  public async setup() {\n    if (!this.setupP) {\n      this.setupP = this.setupPre().catch((e: unknown) => {\n        this.setupP = undefined\n        throw e\n      })\n    }\n    return this.setupP\n  }\n\n  public getFeatures(region: NoAssemblyRegion, opts?: BaseOptions) {\n    const { refName, start, end } = region\n    return ObservableCreate<Feature>(async observer => {\n      const { fasta } = await this.setup()\n      const size = await fasta.getSequenceSize(refName, opts)\n      const regionEnd = Math.min(size, end)\n      const chunks = []\n      const chunkSize = 128000\n\n      const s = start - (start % chunkSize)\n      const e = end + (chunkSize - (end % chunkSize))\n      for (let chunkStart = s; chunkStart < e; chunkStart += chunkSize) {\n        const r = {\n          refName,\n          start: chunkStart,\n          end: chunkStart + chunkSize,\n        }\n        chunks.push(\n          this.seqCache.get(JSON.stringify(r), { ...r, fasta }, opts?.signal),\n        )\n      }\n      const seq = (await Promise.all(chunks))\n        .join('')\n        .slice(start - s)\n        .slice(0, end - start)\n      if (seq) {\n        observer.next(\n          new SimpleFeature({\n            id: `${refName} ${start}-${regionEnd}`,\n            data: { refName, start, end: regionEnd, seq },\n          }),\n        )\n      }\n      observer.complete()\n    })\n  }\n\n  /**\n   * called to provide a hint that data tied to a certain region\n   * will not be needed for the foreseeable future and can be purged\n   * from caches, etc\n   */\n  public freeResources(/* { region } */): void {}\n}\n"],"names":["BgzipFastaAdapter","IndexedFasta","setupPre","fastaLocation","this","getConf","faiLocation","gziLocation","fastaOpts","fasta","openLocation","pluginManager","fai","gzi","BgzipIndexedFasta","IndexedFastaAdapter","BaseSequenceAdapter","seqCache","AbortablePromiseCache","cache","QuickLRU","maxSize","fill","async","args","signal","refName","start","end","getSequence","getRefNames","opts","setup","getSequenceNames","getRegions","seqSizes","getSequenceSizes","Object","keys","map","getHeader","loc","uri","readFile","setupP","catch","e","undefined","getFeatures","region","ObservableCreate","size","getSequenceSize","regionEnd","Math","min","chunks","chunkSize","s","chunkStart","r","push","get","JSON","stringify","seq","Promise","all","join","slice","observer","next","SimpleFeature","id","data","complete","freeResources"],"sourceRoot":""}
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