getBlockHeadersByHash Error: Extension "json" is not supported

[educob]

Hello.

I am receiving block notifications (via zmq) and by calling client.getBlockByHash (json extension) but when running:
client.getBlockHeadersByHash( '00000xxxxx...', 1, { extension: 'json'})

I get: Error: Extension "json" is not supported

It works with extensions bin and hex.

solution:
line 220: if (!_lodash.default.includes(['bin', 'hex'], extension)) {
Must be changed to: if (!_lodash.default.includes(['bin', 'hex', 'json'], extension)) {

[maflcko]

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