Refactor: Remove all require statements, remove ECPair, remove tiny-secp256k1 dep

src/bip66.d.ts

@@ -0,0 +1,7 @@
+/// <reference types="node" />
+export declare function check(buffer: Buffer): boolean;
+export declare function decode(buffer: Buffer): {
+    r: Buffer;
+    s: Buffer;
+};
+export declare function encode(r: Buffer, s: Buffer): Buffer;