add buffer dependency

dist/index.js

dist/services/CryptoService/CryptoServiceNode.js

dist/services/IPFSService.js

dist/services/QrCodeDataService.js

dist/services/VerificationService/VerificationService.js

dist/utils/common.js

dist/utils/getMerkleTreeRootHash.d.ts

dist/utils/getMerkleTreeRootHash.js

dist/utils/qrCodeTemplateUtils.js

package.json

src/services/IPFSService.ts

src/services/QrCodeDataService.ts

src/services/VerificationService/VerificationService.ts

src/utils/common.ts

src/utils/getMerkleTreeRootHash.ts

yarn.lock