➜ substrate-api-sidecar git:(master) ✗ yarn build
rimraf-exec: build/ is an invalid file path and does not exist
tsc
src/controllers/blocks/BlocksController.ts:324:47 - error TS2345: Argument of type 'IU8a' is not assignable to parameter of type 'BlockHash'.
Types of property 'buffer' are incompatible.
Type 'ArrayBufferLike' is not assignable to type 'ArrayBuffer'.
Type 'SharedArrayBuffer' is not assignable to type 'ArrayBuffer'.
Types of property '[Symbol.toStringTag]' are incompatible.
Type '"SharedArrayBuffer"' is not assignable to type '"ArrayBuffer"'.
324 const block = await this.service.fetchBlock(hash, historicApi, options);
~~~~
src/controllers/rc/blocks/RcBlocksController.ts:158:47 - error TS2345: Argument of type 'IU8a' is not assignable to parameter of type 'BlockHash'.
Types of property 'buffer' are incompatible.
Type 'ArrayBufferLike' is not assignable to type 'ArrayBuffer'.
Type 'SharedArrayBuffer' is not assignable to type 'ArrayBuffer'.
Types of property '[Symbol.toStringTag]' are incompatible.
Type '"SharedArrayBuffer"' is not assignable to type '"ArrayBuffer"'.
158 const block = await this.service.fetchBlock(hash, historicApi, options);
~~~~
