fix: add browser nanoseconds

__tests__/test-GitIndex.js

@@ -117,4 +117,15 @@ describe('GitIndex', () => {
       expect(index.entriesMap.get('c').stages.length).toBe(1)
     })
   })
+
+  it('ensure nanoseconds are always present', async () => {
+    const { fs, dir } = await makeFixture('test-GitIndex')
+    const buffer = await fs.read(path.join(dir, 'simple-index'))
+    const index = await GitIndex.from(buffer)
+
+    const ctimeSeconds = index.entriesMap.get('world.txt').ctimeSeconds
+    const ctimeNanoseconds = index.entriesMap.get('world.txt').ctimeNanoseconds
+    expect(ctimeSeconds).not.toBeNull()
+    expect(ctimeNanoseconds).not.toBeNull()
+  })
 })

__tests__/test-status.js

@@ -87,22 +87,19 @@ describe('status', () => {
    * Without the fix, the second write is not detected and the status is 'added'
    * instead of '*added'
    */
-  ;(process.browser ? xit : it)(
-    'status of a file changed twice within a second',
-    async () => {
-      const { fs, dir } = await makeFixture('test-empty')
-      const file = 'a.txt'
+  it('status of a file changed twice within a second', async () => {
+    const { fs, dir } = await makeFixture('test-empty')
+    const file = 'a.txt'
 
-      const start = Date.now()
-      await fs.write(path.join(dir, file), 'Hi')
-      await add({ fs, dir, filepath: file })
-      const a = await status({ fs, dir, filepath: file })
-      expect(a).toEqual('added')
-      await fs.write(path.join(dir, file), 'Ho')
+    const start = Date.now()
+    await fs.write(path.join(dir, file), 'Hi')
+    await add({ fs, dir, filepath: file })
+    const a = await status({ fs, dir, filepath: file })
+    expect(a).toEqual('added')
+    await fs.write(path.join(dir, file), 'Ho')
 
-      const b = await status({ fs, dir, filepath: file })
-      expect(b).toEqual('*added')
-      expect(Date.now() - start).toBeLessThan(1000)
-    }
-  )
+    const b = await status({ fs, dir, filepath: file })
+    expect(b).toEqual('*added')
+    expect(Date.now() - start).toBeLessThan(1000)
+  })
 })

src/models/FileSystem.js

@@ -222,6 +222,7 @@ export class FileSystem {
   async lstat(filename) {
     try {
       const stats = await this._lstat(filename)
+      // For non-browser (local) scenarios regular git 'add' command might be used to write the index. Therefore we need to have the exact nanoseconds (see. normalizeStats.js SecondsNanoseconds ).
       if (!process.browser) {
         const statsNs = await this._lstat(filename, { bigint: true })
         stats.mtimeNs = statsNs.mtimeNs

src/utils/normalizeStats.js

@@ -7,10 +7,14 @@ function SecondsNanoseconds(givenSeconds, givenNanoseconds, nanoseconds, date) {
     return [givenSeconds, givenNanoseconds]
   }
   let seconds
+  // For browser scenarios isomorphic-git 'add' will be used to write the index. Reading and writing are handled using normalizeStats ( see FileSystem.js lstat() ).
   if (nanoseconds === undefined) {
     const milliseconds = date.valueOf()
     seconds = Math.trunc(milliseconds / 1000)
-  } else {
+    nanoseconds = (milliseconds - seconds * 1000) * 1000000 // nanoseconds with millisecond precision
+  }
+  // For non-browser (local) scenarios
+  else {
     seconds = Number(nanoseconds / BigInt(1e9))
     nanoseconds = Number(nanoseconds % BigInt(1e9))
   }