Avoid stream polyfill for GFF3/GTF parsing (#4547)

GMOD · Sep 4, 2024 · b063487 · b063487
1 parent 0523cac
commit b063487
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Showing 12 changed files with 155 additions and 183 deletions.
diff --git a/eslint.config.mjs b/eslint.config.mjs
@@ -13,6 +13,7 @@ export default tseslint.config(
       '**/dist/**/*',
       '**/esm/**/*',
       '**/public/**/*',
+      '**/storybook-static/**',
       'website/*',
       'packages/core/util/nanoid.js',
       'products/**/webpack.config.js',

diff --git a/plugins/data-management/src/AddConnectionWidget/components/AddConnectionWidget.test.tsx b/plugins/data-management/src/AddConnectionWidget/components/AddConnectionWidget.test.tsx
@@ -56,30 +56,32 @@ test('renders', () => {
 }, 20000)
 
 test('can handle a custom UCSC trackHub URL', async () => {
-  jest.spyOn(global, 'fetch').mockImplementation(async url => {
-    const urlText = `${url}`
-    if (urlText.endsWith('hub.txt')) {
-      return new Response(`hub TestHub
+  jest
+    .spyOn(global, 'fetch')
+    .mockImplementation(async (url: string | Request | URL) => {
+      const urlText = `${url}`
+      if (urlText.endsWith('hub.txt')) {
+        return new Response(`hub TestHub
 shortLabel Test Hub
 longLabel Test Genome Informatics Hub for human DNase and RNAseq data
 genomesFile genomes.txt
 email genome@test.com
 descriptionUrl test.html
 `)
-    } else if (urlText.endsWith('genomes.txt')) {
-      return new Response(`genome volMyt1
+      } else if (urlText.endsWith('genomes.txt')) {
+        return new Response(`genome volMyt1
 trackDb hg19/trackDb.txt
 `)
-    } else if (urlText.endsWith('trackDb.txt')) {
-      return new Response(`track dnaseSignal
+      } else if (urlText.endsWith('trackDb.txt')) {
+        return new Response(`track dnaseSignal
 bigDataUrl dnaseSignal.bigWig
 shortLabel DNAse Signal
 longLabel Depth of alignments of DNAse reads
 type bigWig
 `)
-    }
-    throw new Error('unknown')
-  })
+      }
+      throw new Error('unknown')
+    })
 
   const {
     session,

diff --git a/plugins/gff3/package.json b/plugins/gff3/package.json
@@ -38,7 +38,7 @@
   "dependencies": {
     "@flatten-js/interval-tree": "^1.0.15",
     "@gmod/bgzf-filehandle": "^1.4.3",
-    "@gmod/gff": "^1.3.0",
+    "gff-nostream": "^1.3.3",
     "@gmod/tabix": "^1.5.6"
   },
   "peerDependencies": {

diff --git a/plugins/gff3/src/Gff3Adapter/Gff3Adapter.ts b/plugins/gff3/src/Gff3Adapter/Gff3Adapter.ts
@@ -8,7 +8,7 @@ import { ObservableCreate } from '@jbrowse/core/util/rxjs'
 import IntervalTree from '@flatten-js/interval-tree'
 import SimpleFeature, { Feature } from '@jbrowse/core/util/simpleFeature'
 import { unzip } from '@gmod/bgzf-filehandle'
-import gff from '@gmod/gff'
+import { parseStringSync } from 'gff-nostream'
 import { isGzip, updateStatus } from '@jbrowse/core/util'
 
 import { featureData } from '../featureData'
@@ -76,14 +76,7 @@ export default class Gff3Adapter extends BaseFeatureDataAdapter {
           if (!this.calculatedIntervalTreeMap[refName]) {
             sc?.('Parsing GFF data')
             const intervalTree = new IntervalTree()
-            gff
-              .parseStringSync(lines, {
-                parseFeatures: true,
-                parseComments: false,
-                parseDirectives: false,
-                parseSequences: false,
-                disableDerivesFromReferences: true,
-              })
+            parseStringSync(lines)
               .flat()
               .map(
                 (f, i) =>

diff --git a/plugins/gff3/src/Gff3TabixAdapter/Gff3TabixAdapter.ts b/plugins/gff3/src/Gff3TabixAdapter/Gff3TabixAdapter.ts
@@ -8,7 +8,7 @@ import { openLocation } from '@jbrowse/core/util/io'
 import { ObservableCreate } from '@jbrowse/core/util/rxjs'
 import SimpleFeature, { Feature } from '@jbrowse/core/util/simpleFeature'
 import { TabixIndexedFile } from '@gmod/tabix'
-import gff, { GFF3Feature } from '@gmod/gff'
+import { parseStringSync } from 'gff-nostream'
 import { Observer } from 'rxjs'
 import {
   readConfObject,
@@ -87,14 +87,14 @@ export default class Gff3TabixAdapter extends BaseFeatureDataAdapter {
         query.refName,
         query.start,
         query.end,
-        (line: string, fileOffset: number) => {
+        (line, fileOffset) => {
           lines.push(this.parseLine(metadata.columnNumbers, line, fileOffset))
         },
       )
       if (allowRedispatch && lines.length) {
         let minStart = Number.POSITIVE_INFINITY
         let maxEnd = Number.NEGATIVE_INFINITY
-        lines.forEach(line => {
+        for (const line of lines) {
           const featureType = line.fields[2]!
           // only expand redispatch range if feature is not a "dontRedispatch"
           // type skips large regions like chromosome,region
@@ -107,7 +107,7 @@ export default class Gff3TabixAdapter extends BaseFeatureDataAdapter {
               maxEnd = line.end
             }
           }
-        })
+        }
         if (maxEnd > query.end || minStart < query.start) {
           // make a new feature callback to only return top-level features
           // in the original query range
@@ -124,7 +124,7 @@ export default class Gff3TabixAdapter extends BaseFeatureDataAdapter {
       }
 
       const gff3 = lines
-        .map((lineRecord: LineFeature) => {
+        .map(lineRecord => {
           if (lineRecord.fields[8] && lineRecord.fields[8] !== '.') {
             if (!lineRecord.fields[8].includes('_lineHash')) {
               lineRecord.fields[8] += `;_lineHash=${lineRecord.lineHash}`
@@ -136,16 +136,12 @@ export default class Gff3TabixAdapter extends BaseFeatureDataAdapter {
         })
         .join('\n')
 
-      const features = gff.parseStringSync(gff3, {
-        parseFeatures: true,
-        parseComments: false,
-        parseDirectives: false,
-        parseSequences: false,
-        disableDerivesFromReferences: true,
-      })
-
-      features.forEach(featureLocs => {
-        this.formatFeatures(featureLocs).forEach(f => {
+      for (const featureLocs of parseStringSync(gff3)) {
+        for (const featureLoc of featureLocs) {
+          const f = new SimpleFeature({
+            data: featureData(featureLoc),
+            id: `${this.id}-offset-${featureLoc.attributes?._lineHash?.[0]}`,
+          })
           if (
             doesIntersect2(
               f.get('start'),
@@ -156,8 +152,8 @@ export default class Gff3TabixAdapter extends BaseFeatureDataAdapter {
           ) {
             observer.next(f)
           }
-        })
-      })
+        }
+      }
       observer.complete()
     } catch (e) {
       observer.error(e)
@@ -180,15 +176,5 @@ export default class Gff3TabixAdapter extends BaseFeatureDataAdapter {
     }
   }
 
-  private formatFeatures(featureLocs: GFF3Feature) {
-    return featureLocs.map(
-      featureLoc =>
-        new SimpleFeature({
-          data: featureData(featureLoc),
-          id: `${this.id}-offset-${featureLoc.attributes?._lineHash?.[0]}`,
-        }),
-    )
-  }
-
   public freeResources(/* { region } */) {}
 }
diff --git a/plugins/gff3/src/featureData.ts b/plugins/gff3/src/featureData.ts
@@ -1,4 +1,4 @@
-import { GFF3FeatureLineWithRefs } from '@gmod/gff'
+import { GFF3FeatureLineWithRefs } from 'gff-nostream'
 
 export function featureData(data: GFF3FeatureLineWithRefs) {
   const f: Record<string, unknown> = { ...data }

diff --git a/plugins/gtf/package.json b/plugins/gtf/package.json
@@ -38,7 +38,7 @@
   "dependencies": {
     "@flatten-js/interval-tree": "^1.0.15",
     "@gmod/bgzf-filehandle": "^1.4.3",
-    "@gmod/gtf": "^0.0.9"
+    "gtf-nostream": "^1.0.0"
   },
   "peerDependencies": {
     "@jbrowse/core": "^2.0.0",

diff --git a/plugins/gtf/src/GtfAdapter/GtfAdapter.ts b/plugins/gtf/src/GtfAdapter/GtfAdapter.ts
@@ -13,7 +13,7 @@ import {
   isGzip,
 } from '@jbrowse/core/util'
 import { unzip } from '@gmod/bgzf-filehandle'
-import gtf from '@gmod/gtf'
+import { parseStringSync } from 'gtf-nostream'
 
 // locals
 import { FeatureLoc, featureData } from '../util'
@@ -82,14 +82,7 @@ export default class GtfAdapter extends BaseFeatureDataAdapter {
           if (!this.calculatedIntervalTreeMap[refName]) {
             sc?.('Parsing GTF data')
             const intervalTree = new IntervalTree()
-            ;(
-              gtf.parseStringSync(lines, {
-                parseFeatures: true,
-                parseComments: false,
-                parseDirectives: false,
-                parseSequences: false,
-              }) as FeatureLoc[][]
-            )
+            ;(parseStringSync(lines) as FeatureLoc[][])
               .flat()
               .map(
                 (f, i) =>

diff --git a/plugins/legacy-jbrowse/src/JBrowse1TextSearchAdapter/HttpMap.test.ts b/plugins/legacy-jbrowse/src/JBrowse1TextSearchAdapter/HttpMap.test.ts
@@ -9,10 +9,12 @@ test('read from meta', async () => {
     .join(__dirname, '..', '..', '..', '..', 'test_data', 'names')
     .replaceAll('\\', '\\\\')
 
-  jest.spyOn(global, 'fetch').mockImplementation(url => {
-    const response = `${url}`.includes('names/meta.json') ? meta : {}
-    return Promise.resolve(new Response(JSON.stringify(response)))
-  })
+  jest
+    .spyOn(global, 'fetch')
+    .mockImplementation((url: string | Request | URL) => {
+      const response = `${url}`.includes('names/meta.json') ? meta : {}
+      return Promise.resolve(new Response(JSON.stringify(response)))
+    })
   const hashMap = new HttpMap({ url: rootTemplate })
   await hashMap.getBucket('apple')
 
@@ -25,20 +27,21 @@ test('get bucket contents', async () => {
     .join(__dirname, '..', '..', '..', '..', 'test_data', 'names')
     .replaceAll('\\', '\\\\')
 
-  const spy = jest.spyOn(global, 'fetch')
-  spy.mockImplementation(url => {
-    let response = {}
-    if (`${url}`.includes('names/meta.json')) {
-      response = meta
-    }
-    if (`${url}`.includes('names/0.json')) {
-      response = first
-    }
-    if (`${url}`.includes('names/f.json')) {
-      response = last
-    }
-    return Promise.resolve(new Response(JSON.stringify(response)))
-  })
+  const spy = jest
+    .spyOn(global, 'fetch')
+    .mockImplementation((url: string | Request | URL) => {
+      let response = {}
+      if (`${url}`.includes('names/meta.json')) {
+        response = meta
+      }
+      if (`${url}`.includes('names/0.json')) {
+        response = first
+      }
+      if (`${url}`.includes('names/f.json')) {
+        response = last
+      }
+      return Promise.resolve(new Response(JSON.stringify(response)))
+    })
   const hashMap = new HttpMap({ url: rootTemplate })
 
   await hashMap.getBucket('apple')

diff --git a/products/jbrowse-web/src/tests/Loader.test.tsx b/products/jbrowse-web/src/tests/Loader.test.tsx
@@ -25,62 +25,65 @@ jest.mock('../makeWorkerInstance', () => () => {})
 
 const delay = { timeout: 20000 }
 
-jest.spyOn(global, 'fetch').mockImplementation(async (url, args) => {
-  if (/plugin-store/.exec(`${url}`)) {
-    return new Response(
-      JSON.stringify({
-        plugins: [
-          {
-            url: 'https://unpkg.com/jbrowse-plugin-msaview/dist/jbrowse-plugin-msaview.umd.production.min.js',
-          },
-        ],
-      }),
-    )
-  }
-  if (`${url}`.includes('testid')) {
-    return new Response(
-      `{"session":"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"}`,
-    )
-  }
-  if (`${url}`.includes('testcustomcallback')) {
-    return new Response(
-      `{"session":"eJzVVm1v2zYQ_isCvzQB7NiK4zTQt9TNVm9p59puUmANAlo6SdwoSiPptwb-7zuSsiw7dhpk2YB9MGAe7-W5e053fCAsIgHRX5fwOfslnJAGETQDFPWFhkRSzXLhaVDagwXNCg6e37ponbZP_YbXDfyLoPvWG3xEs4zKhAkStBskknQO8pZFOiVB5-KsQWYM5ooEvz-4cGzj-974RnO9LEzUayaAyp9B5BncoBHe5HGsQA8WJDhtt9H7pBiANMf2SbuLwZgqOF1CNIQE_bkoEuJPLo1QJ5foRGkqtQUHAhF00ZPfQLUZSAUoiClX0CBUKcgmfFkaz3I-yxdkdYf4JA3_rKUwHOpr-XF0c7PBfslZIjIQWo2NMl6EuYhZMnWZVv6aPBdJUwKNVFPNmhOaNf1zv312cX7WOe-87TQVKIUGay9lhrXgf_XTL1dt6Y-Gu5XbYHjvrFBhwDhMi_U5KH2o3kD9OhmLSO362NZvkBRYkmLxfFP9nZQenjYtofejp5I_gHy7KPeFdX2_WH43zZZPFeRIHvqNpyI0YI5ioHoq4dh7-CY8TwIehFcKTxLQR28UsiiiN8ffxIoY9kUEEhvApOGQD0tRLbGdi1WDjGbJT87rHvU9l6sVGqk0n4_yWPc4KwomkqrlYsY1yHeWmJjTpC9CPo3A9qo5Xy3Ks9_tnBtPo0-DnkmdJrDLaZq__0qv2Kw72eV0j9GG2LMf8rrX_BXJVaIIS___GsO1HPbxtufWEQccQm3Gi5Fa5oh1rXI-dcXybflMaBxsJtbqBbQ-e1Y8q6I1dk-7bdd-6_xIoOUUnMx1t5Os7sygS1kEHzCeqU7ZohvRb-jBzPLqyo7FkS1RLseulCnDMDJMWUg5KVWu6QQ4loYYDJy6T6CEhUmANFmVXg2KOYuQT8tb3d24Hm7T9gc1qq_gwyGVWxvIzmqOuOwy2PA3hoV2fLusH2-uirmriNUxbQkrGL06ye6yAoAbyvx52ZZAGCwrcqlHTlp6XaPZd1eB6u-5NB1J8aObwW3FhEtVgP0W-9jvVIRQXtTBuEV1cCnafnh6aDy5DkV9N1tjzxp7c6ZTb3TjHYV5sTwm29vcgFrvc-wvGtFCbw2AdzS7LIX4xqDZdR5Ws3Aq2QG4J6hp9RV8sUqp1kXQanG05mmudNDBp0bLtMp9RDVtOSct1x4nfygMYLjD2bIwkfizo-KP_ePIhuat58UPHxOvN_T_d2u88cIV8npvpC3TR9X8L98zr_w-eGz_dHYvIsKut3KY9KpBZvr-bvU3l2iNHA"}`,
-    )
-  }
-  if (`${url}`.includes('nonexist')) {
-    return new Response('', {
-      status: 404,
-      statusText: 'failed to find session',
-    })
-  }
-  // this is the analytics
-  if (`${url}`.includes('jb2=true')) {
-    return new Response('{}')
-  }
-  try {
-    const file = getFile(`${url}`)
-    const maxRangeRequest = 2000000 // kind of arbitrary, part of the rangeParser
-    if (args?.headers && 'range' in args.headers) {
-      const range = rangeParser(maxRangeRequest, args.headers.range)
-      if (range === -2 || range === -1) {
-        throw new Error(`Error parsing range "${args.headers.range}"`)
-      }
-      const { start, end } = range[0]!
-      const len = end - start + 1
-      const buf = Buffer.alloc(len)
-      const { bytesRead } = await file.read(buf, 0, len, start)
-      const stat = await file.stat()
-      return new Response(buf.subarray(0, bytesRead), {
-        status: 206,
-        headers: [['content-range', `${start}-${end}/${stat.size}`]],
+jest
+  .spyOn(global, 'fetch')
+
+  .mockImplementation(async (url: any, args: any) => {
+    if (/plugin-store/.exec(`${url}`)) {
+      return new Response(
+        JSON.stringify({
+          plugins: [
+            {
+              url: 'https://unpkg.com/jbrowse-plugin-msaview/dist/jbrowse-plugin-msaview.umd.production.min.js',
+            },
+          ],
+        }),
+      )
+    }
+    if (`${url}`.includes('testid')) {
+      return new Response(
+        `{"session":"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"}`,
+      )
+    }
+    if (`${url}`.includes('testcustomcallback')) {
+      return new Response(
+        `{"session":"eJzVVm1v2zYQ_isCvzQB7NiK4zTQt9TNVm9p59puUmANAlo6SdwoSiPptwb-7zuSsiw7dhpk2YB9MGAe7-W5e053fCAsIgHRX5fwOfslnJAGETQDFPWFhkRSzXLhaVDagwXNCg6e37ponbZP_YbXDfyLoPvWG3xEs4zKhAkStBskknQO8pZFOiVB5-KsQWYM5ooEvz-4cGzj-974RnO9LEzUayaAyp9B5BncoBHe5HGsQA8WJDhtt9H7pBiANMf2SbuLwZgqOF1CNIQE_bkoEuJPLo1QJ5foRGkqtQUHAhF00ZPfQLUZSAUoiClX0CBUKcgmfFkaz3I-yxdkdYf4JA3_rKUwHOpr-XF0c7PBfslZIjIQWo2NMl6EuYhZMnWZVv6aPBdJUwKNVFPNmhOaNf1zv312cX7WOe-87TQVKIUGay9lhrXgf_XTL1dt6Y-Gu5XbYHjvrFBhwDhMi_U5KH2o3kD9OhmLSO362NZvkBRYkmLxfFP9nZQenjYtofejp5I_gHy7KPeFdX2_WH43zZZPFeRIHvqNpyI0YI5ioHoq4dh7-CY8TwIehFcKTxLQR28UsiiiN8ffxIoY9kUEEhvApOGQD0tRLbGdi1WDjGbJT87rHvU9l6sVGqk0n4_yWPc4KwomkqrlYsY1yHeWmJjTpC9CPo3A9qo5Xy3Ks9_tnBtPo0-DnkmdJrDLaZq__0qv2Kw72eV0j9GG2LMf8rrX_BXJVaIIS___GsO1HPbxtufWEQccQm3Gi5Fa5oh1rXI-dcXybflMaBxsJtbqBbQ-e1Y8q6I1dk-7bdd-6_xIoOUUnMx1t5Os7sygS1kEHzCeqU7ZohvRb-jBzPLqyo7FkS1RLseulCnDMDJMWUg5KVWu6QQ4loYYDJy6T6CEhUmANFmVXg2KOYuQT8tb3d24Hm7T9gc1qq_gwyGVWxvIzmqOuOwy2PA3hoV2fLusH2-uirmriNUxbQkrGL06ye6yAoAbyvx52ZZAGCwrcqlHTlp6XaPZd1eB6u-5NB1J8aObwW3FhEtVgP0W-9jvVIRQXtTBuEV1cCnafnh6aDy5DkV9N1tjzxp7c6ZTb3TjHYV5sTwm29vcgFrvc-wvGtFCbw2AdzS7LIX4xqDZdR5Ws3Aq2QG4J6hp9RV8sUqp1kXQanG05mmudNDBp0bLtMp9RDVtOSct1x4nfygMYLjD2bIwkfizo-KP_ePIhuat58UPHxOvN_T_d2u88cIV8npvpC3TR9X8L98zr_w-eGz_dHYvIsKut3KY9KpBZvr-bvU3l2iNHA"}`,
+      )
+    }
+    if (`${url}`.includes('nonexist')) {
+      return new Response('', {
+        status: 404,
+        statusText: 'failed to find session',
       })
     }
-    return new Response(await file.readFile(), { status: 200 })
-  } catch (e) {
-    console.error(e)
-    return new Response(undefined, { status: 404 })
-  }
-})
+    // this is the analytics
+    if (`${url}`.includes('jb2=true')) {
+      return new Response('{}')
+    }
+    try {
+      const file = getFile(`${url}`)
+      const maxRangeRequest = 2000000 // kind of arbitrary, part of the rangeParser
+      if (args?.headers && 'range' in args.headers) {
+        const range = rangeParser(maxRangeRequest, args.headers.range)
+        if (range === -2 || range === -1) {
+          throw new Error(`Error parsing range "${args.headers.range}"`)
+        }
+        const { start, end } = range[0]!
+        const len = end - start + 1
+        const buf = Buffer.alloc(len)
+        const { bytesRead } = await file.read(buf, 0, len, start)
+        const stat = await file.stat()
+        return new Response(buf.subarray(0, bytesRead), {
+          status: 206,
+          headers: [['content-range', `${start}-${end}/${stat.size}`]],
+        })
+      }
+      return new Response(await file.readFile(), { status: 200 })
+    } catch (e) {
+      console.error(e)
+      return new Response(undefined, { status: 404 })
+    }
+  })
 
 afterEach(() => {
   localStorage.clear()