the full script for the instructive page here: https://noir-lang.org/typescript

typescript_bbjs.ts

import circuit from '../target/test.json' assert { type: 'json' };
import { decompressSync } from 'fflate';
import { Crs, newBarretenbergApiAsync, RawBuffer } from '@aztec/bb.js/dest/node/index.js';
import { ethers } from 'ethers'; // I'm lazy so I'm using ethers to pad my input
import { executeCircuit, compressWitness } from '@noir-lang/acvm_js';

async function main() {

    const acirBuffer = Buffer.from(circuit.bytecode, 'base64');
    const acirBufferUncompressed = decompressSync(acirBuffer);

    const api = await newBarretenbergApiAsync(4);

    const [exact, circuitSize, subgroup] = await api.acirGetCircuitSizes(acirBufferUncompressed);
    const subgroupSize = Math.pow(2, Math.ceil(Math.log2(circuitSize)));
    const crs = await Crs.new(subgroupSize + 1);
    await api.commonInitSlabAllocator(subgroupSize);
    await api.srsInitSrs(new RawBuffer(crs.getG1Data()), crs.numPoints, new RawBuffer(crs.getG2Data()));

    const acirComposer = await api.acirNewAcirComposer(subgroupSize);

    async function generateWitness(input: any, acirBuffer: Buffer): Promise<Uint8Array> {
        const initialWitness = new Map<number, string>();
        initialWitness.set(1, ethers.utils.hexZeroPad(`0x${input.x.toString(16)}`, 32));
        initialWitness.set(2, ethers.utils.hexZeroPad(`0x${input.y.toString(16)}`, 32));
        // initialWitness.set(3, ethers.utils.hexZeroPad(`0x${input.z.toString(16)}`, 32));

        const witnessMap = await executeCircuit(acirBuffer, initialWitness, () => {
            throw Error('unexpected oracle');
        });

        const witnessBuff = compressWitness(witnessMap);
        return witnessBuff;
    }

    async function generateProof(witness: Uint8Array) {
        const proof = await api.acirCreateProof(
            acirComposer,
            acirBufferUncompressed,
            decompressSync(witness),
            false,
        );
        return proof;
    }

    async function verifyProof(proof: Uint8Array) {
        await api.acirInitProvingKey(acirComposer, acirBufferUncompressed);
        const verified = await api.acirVerifyProof(acirComposer, proof, false);
        return verified;
    }

    const input = { x: 3, y: 4 };
    const witness = await generateWitness(input, acirBuffer);
    console.log('Witness generated!');
    const proof = await generateProof(witness);
    console.log('Proof generated!');
    await verifyProof(proof);
    console.log('Proof verified!');
    api.destroy();
}

main();

I keep getting this error, from inside the node_modules after setting up tsconfig and package.json as provided in the tutorial here: https://noir-lang.org/typescript

`npx tsc index.ts
index.ts:1:21 - error TS2732: Cannot find module './target/MyCircuit.json'. Consider using '--resolveJsonModule' to import module with '.json' extension.

1 import circuit from "./target/MyCircuit.json" assert { type: "json" };
~~~~~~~~~~~~~~~~~~~~~~~~~

index.ts:1:47 - error TS2821: Import assertions are only supported when the '--module' option is set to 'esnext' or 'nodenext'.

1 import circuit from "./target/MyCircuit.json" assert { type: "json" };
~~~~~~~~~~~~~~~~~~~~~~~

node_modules/@aztec/bb.js/dest/node/barretenberg_wasm/barretenberg_wasm.d.ts:1:23 - error TS1452: 'resolution-mode' assertions are only supported when moduleResolution is node16 or nodenext.

1 ///
~~~~

node_modules/@aztec/bb.js/dest/node/types/node/point.d.ts:1:23 - error TS1452: 'resolution-mode' assertions are only supported when moduleResolution is node16 or nodenext.

1 ///
~~~~

Found 4 errors in 3 files.

Errors Files
2 index.ts:1
1 node_modules/@aztec/bb.js/dest/node/barretenberg_wasm/barretenberg_wasm.d.ts:1
1 node_modules/@aztec/bb.js/dest/node/types/node/point.d.ts:1
`

---

tsconfig: https://gist.github.com/critesjosh/6f3ba19fdc9298b24e90ba4f736247dc

package.json:

{ "name": "mycircuit", "version": "1.0.0", "type": "module", "description": "", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "keywords": [], "author": "", "license": "ISC", "devDependencies": { "@types/node": "^20.8.6", "typescript": "^5.2.2" }, "dependencies": { "@aztec/bb.js": "^0.3.6", "@noir-lang/acvm_js": "git+https://[email protected]/noir-lang/acvm-simulator-wasm.git#b9d9ca9dfc5140839f23998d9466307215607c42", "ethers": "^5.7.2", "fflate": "^0.8.1" } }

@infinitywarp I recommend trying this new guide: https://noir-lang.org/dev/noir_js/getting_started/tiny_noir_app