Add SignatureHashType export

Author: gitzhou

src/index.ts

@@ -18,7 +18,7 @@ export {
 } from './internal';
 
 export {
-  Int, Bool, Bytes, SubBytes, PrivKey, PubKey, Sig, Ripemd160, Sha1, Sha256, SigHashType, SigHashPreimage,
+  Int, Bool, Bytes, SubBytes, PrivKey, PubKey, Sig, Ripemd160, Sha1, Sha256, SigHashType, SignatureHashType, SigHashPreimage,
   OpCodeType, SupportedParamType, PubKeyHash, TxContext, ContractClass, Contract, SortedItem, HashedMap, HashedSet,
   StructObject, TypeResolver, PrimitiveTypes, AsmVarValues, Flavor,
   Arguments, Argument, StructEntity, LibraryEntity, ABIEntity, ABIEntityType, ABI, ParamEntity,

src/utils.ts

@@ -10,7 +10,7 @@ export { bsv };
 
 import { ABIEntity, LibraryEntity } from '.';
 import { compileAsync, OpCode } from './compilerWrapper';
-import { AbstractContract, compile, CompileResult, findCompiler, getValidatedHexString, Script, ScryptType, StructEntity, SupportedParamType } from './internal';
+import { AbstractContract, compile, CompileResult, findCompiler, getValidatedHexString, Script, ScryptType, SignatureHashType, StructEntity, SupportedParamType } from './internal';
 import { arrayTypeAndSizeStr, isGenericType, parseGenericType } from './typeCheck';
 
 const BN = bsv.crypto.BN;
@@ -26,8 +26,7 @@ export const DEFAULT_FLAGS =
   Interp.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS |
   Interp.SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY | Interp.SCRIPT_VERIFY_CHECKSEQUENCEVERIFY | Interp.SCRIPT_VERIFY_CLEANSTACK;
 
-export const DEFAULT_SIGHASH_TYPE =
-  bsv.crypto.Signature.SIGHASH_ALL | bsv.crypto.Signature.SIGHASH_FORKID;
+export const DEFAULT_SIGHASH_TYPE: SignatureHashType = SignatureHashType.ALL;
 
 
 /**