block-stream2 - npm Package Compare versions

Comparing version 2.0.0 to 2.1.0

index.js

@@ -28,6 +28,25 @@ const { Transform } = require('readable-stream')
     while (this._bufferedBytes >= this.size) {
-      const b = Buffer.concat(this._buffered)
       this._bufferedBytes -= this.size
-      this.push(b.slice(0, this.size))
-      this._buffered = [ b.slice(this.size, b.length) ]
+
+      // Assemble the buffers that will compose the final block
+      const blockBufs = []
+      let blockBufsBytes = 0
+      while (blockBufsBytes < this.size) {
+        const b = this._buffered.shift()
+
+        if (blockBufsBytes + b.length <= this.size) {
+          blockBufs.push(b)
+          blockBufsBytes += b.length
+        } else {
+          // If the last buffer is larger than needed for the block, just
+          // use the needed part
+          const neededSize = this.size - blockBufsBytes
+          blockBufs.push(b.slice(0, neededSize))
+          blockBufsBytes += neededSize
+          this._buffered.unshift(b.slice(neededSize))
+        }
+      }
+
+      // Then concat just those buffers, leaving the rest untouched in _buffered
+      this.push(Buffer.concat(blockBufs, this.size))
     }
@@ -34,0 +53,0 @@ next()

package.json

 {
   "name": "block-stream2",
-  "version": "2.0.0",
+  "version": "2.1.0",
   "description": "transform input into equally-sized blocks of output",
@@ -10,6 +10,7 @@ "main": "index.js",
   "devDependencies": {
+    "standard": "^16.0.3",
     "tape": "^4.2.2"
   },
   "scripts": {
-    "test": "tape test/*.js"
+    "test": "standard && tape test/*.js"
   },
@@ -16,0 +17,0 @@ "repository": {

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Major refactor

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New author

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Improved metrics

Total package byte prevSize

5228

increased by16.49%

Lines of code

56

increased by40%

Number of medium supply chain risk alerts

0

decreased by-100%

Worsened metrics

Dev dependency count

2

increased by100%

No dependency changes