Misc Primitive Fixes

packages/primitives/src/block-header.ts

@@ -47,8 +47,8 @@ export class BlockHeader {
    */
   public static from(blockHeader: Uint8Array | string) {
     return blockHeader instanceof Uint8Array
-      ? BlockHeader.fromBytes(blockHeader)
-      : BlockHeader.fromHex(blockHeader);
+      ? this.fromBytes(blockHeader)
+      : this.fromHex(blockHeader);
   }
 
   /**
@@ -85,7 +85,7 @@ export class BlockHeader {
       throw new Error('The given string is not valid hexadecimal.');
     }
 
-    return BlockHeader.fromBytes(hexToBin(hex));
+    return this.fromBytes(hexToBin(hex));
   }
 
   /**
@@ -97,7 +97,7 @@ export class BlockHeader {
    * @returns A new BlockHeader instance
    */
   static fromRaw(obj: BlockHeaderRaw): BlockHeader {
-    return new BlockHeader(
+    return new this(
       obj.version,
       obj.previousBlockHash,
       obj.merkleRoot,
@@ -116,7 +116,7 @@ export class BlockHeader {
    */
   public static isValid(blockHeader: Uint8Array | string): boolean {
     try {
-      BlockHeader.from(blockHeader);
+      this.from(blockHeader);
     } catch (_error) {
       return false;
     }