How to generate "witness.wtns" files using snarkjs? about snarkjs HOT 6 CLOSED

Witness calculation is primarily done from the code that circom generates now. SnarkJS tries to support the different versions of circom2 witness generation but there is generally a time delay between their breaking changes and our updates. So please use the witness generator that circom outputs.

from snarkjs.

That is indeed the correct command.

I presume you could run the other snarkjs commands? and snark prints its version?

$ snarkjs
[email protected]

Show the ls of that directory. Do you have a circuit.wasm and input.json? circuit.wasm comes from Step 10 https://github.com/iden3/snarkjs#10-compile-the-circuit and input.json comes from Step 22 which shows echoing some json to create the input.json

What OS and version? What version node?

from snarkjs.

That is indeed the correct command.

I presume you could run the other snarkjs commands? and snark prints its version?

$ snarkjs
[email protected]

Show the ls of that directory. Do you have a circuit.wasm and input.json? circuit.wasm comes from Step 10 https://github.com/iden3/snarkjs#10-compile-the-circuit and input.json comes from Step 22 which shows echoing some json to create the input.json

What OS and version? What version node?

OS:Linux

I have circuit.wasm and input.json

$ npm ls snarkjs
[email protected]
$ circom circuit.circom --r1cs --wasm --sym
$ snarkjs wtns calculate circuit.wasm input.json witness.wtns
Error: Invalid Command
    at run (/home/pyc/nodejs/lib/node_modules/snarkjs/cli.js:450:19)
    at Object.<anonymous> (/home/pyc/nodejs/lib/node_modules/snarkjs/cli.js:295:1)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
    at internal/main/run_main_module.js:17:47
ERROR: Error: Invalid Command

from snarkjs.

Again, what version of node are you on? node --version
The project requires node14 thats my current best guess
https://github.com/iden3/snarkjs#install-node-v14

from snarkjs.

Again, what version of node are you on? node --version
The project requires node14 thats my current best guess
https://github.com/iden3/snarkjs#install-node-v14

my node version is v14.16.1

from snarkjs.

Seems the API has changed, try something like:

snarkjs calculatewitness -c artifacts/circuits/circuit.wasm -i input.json -w witness.wtns

from snarkjs.