feat: add ipfsHash helper

package.json

@@ -79,6 +79,7 @@
     "tslib": "^2.3.0",
     "tweetnacl": "^1.0.3",
     "tweetnacl-util": "^0.15.1",
+    "typestub-ipfs-only-hash": "^4.0.0",
     "uint8arrays": "^4.0.3"
   },
   "devDependencies": {

packages/lit-node-client-nodejs/src/lib/lit-node-client-nodejs.ts

@@ -2,6 +2,7 @@ import { computeAddress } from '@ethersproject/transactions';
 import { BigNumber, ethers } from 'ethers';
 import { joinSignature, sha256 } from 'ethers/lib/utils';
 import { SiweMessage } from 'siwe';
+import Hash from 'typestub-ipfs-only-hash';
 
 import {
   ILitResource,
@@ -654,40 +655,8 @@ export class LitNodeClientNodeJs
   };
 
   // ========== Promise Handlers ==========
-  getIpfsId = async ({
-    dataToHash,
-    sessionSigs,
-  }: {
-    dataToHash: string;
-    sessionSigs: SessionSigsMap;
-    debug?: boolean;
-  }) => {
-    const res = await this.executeJs({
-      ipfsId: LIT_ACTION_IPFS_HASH,
-      sessionSigs,
-      jsParams: {
-        dataToHash,
-      },
-    }).catch((e) => {
-      logError('Error getting IPFS ID', e);
-      throw e;
-    });
-
-    let data;
-
-    if (typeof res.response === 'string') {
-      try {
-        data = JSON.parse(res.response).res;
-      } catch (e) {
-        data = res.response;
-      }
-    }
-
-    if (!data.success) {
-      logError('Error getting IPFS ID', data.data);
-    }
-
-    return data.data;
+  getIpfsId = async ({ str }: { str: string }): Promise<`Qm${string}`> => {
+    return (await Hash.of(Buffer.from(str))) as `Qm${string}`;
   };
 
   /**
@@ -716,10 +685,17 @@ export class LitNodeClientNodeJs
       });
     }
 
+    if (!params.code) {
+      return throwError({
+        message: 'code is required',
+        errorKind: LIT_ERROR.INVALID_PARAM_TYPE.kind,
+        errorCode: LIT_ERROR.INVALID_PARAM_TYPE.name,
+      });
+    }
+
     // determine which node to run on
     const ipfsId = await this.getIpfsId({
-      dataToHash: params.code!,
-      sessionSigs: params.sessionSigs,
+      str: params.code,
     });
 
     // select targetNodeRange number of random index of the bootstrapUrls.length