perf(tl-pack): use subarray for checksum instead slice

men232 · men232 · commit be5383d57b6e · 2025-06-08T19:06:41.000+02:00
diff --git a/packages/tl-pack/src/BinaryReader.ts b/packages/tl-pack/src/BinaryReader.ts
@@ -534,7 +534,7 @@ export class BinaryReader {
       this.assertConstructor(CORE_TYPES.Checksum);
     }
 
-    const bytes = this.target.slice(this._checksumOffset, offset);
+    const bytes = this.target.subarray(this._checksumOffset, offset);
     const checksum = this.readInt32();
     let sum = 0;
 
diff --git a/packages/tl-pack/src/BinaryWriter.ts b/packages/tl-pack/src/BinaryWriter.ts
@@ -264,7 +264,7 @@ export class BinaryWriter {
   }
 
   writeChecksum(withConstructor: boolean = true): this {
-    const bytes = this.target.slice(this.offsetChecksum, this.offset);
+    const bytes = this.target.subarray(this.offsetChecksum, this.offset);
     let sum = 0;
 
     for (const val of bytes) {

Original file line number	Diff line number	Diff line change
`@@ -534,7 +534,7 @@ export class BinaryReader {`
`534`	`534`	`this.assertConstructor(CORE_TYPES.Checksum);`
`535`	`535`	`}`
`536`	`536`
`537`		`- const bytes = this.target.slice(this._checksumOffset, offset);`
	`537`	`+ const bytes = this.target.subarray(this._checksumOffset, offset);`
`538`	`538`	`const checksum = this.readInt32();`
`539`	`539`	`let sum = 0;`
`540`	`540`
Original file line number	Diff line number	Diff line change
`@@ -264,7 +264,7 @@ export class BinaryWriter {`
`264`	`264`	`}`
`265`	`265`
`266`	`266`	`writeChecksum(withConstructor: boolean = true): this {`
`267`		`- const bytes = this.target.slice(this.offsetChecksum, this.offset);`
	`267`	`+ const bytes = this.target.subarray(this.offsetChecksum, this.offset);`
`268`	`268`	`let sum = 0;`
`269`	`269`
`270`	`270`	`for (const val of bytes) {`