Generating just a witness in browser about snarkjs

[nanaknihal]

Thanks. I didn't try this but was able to get it to work via the circom_runtime package:

const { WitnessCalculatorBuilder } = require("circom_runtime");

// Loading R1CS and wasm as bytes
const r1cs = fs.readFileSync(`./zk/circuits/circom/artifacts/${circuitName}.r1cs`);
const wasm = fs.readFileSync(`./zk/circuits/circom/artifacts/${circuitName}_js/${circuitName}.wasm`);
 
// Calc witness as bytes without saving any files
const wc = await WitnessCalculatorBuilder(wasm);
const witness =  (wc.circom_version() == 1) ? await wc.calculateBinWitness(inputs) : await wc.calculateWTNSBin(inputs);

[OBrezhniev]

Hi @nanaknihal! Check the js code generated together with wasm files by circom - it works with buffers, and should work in the browser too.