fix(core): return promise from 'dag.resolve'

Author: tarunbatra

packages/ipfs/src/core/components/dag/resolve.js

@@ -1,16 +1,45 @@
 'use strict'
 
+const CID = require('cids')
 const { parseArgs } = require('./utils')
 const { withTimeoutOption } = require('../../utils')
 
 module.exports = ({ ipld, preload }) => {
-  return withTimeoutOption(async function * resolve (cid, path, options) { // eslint-disable-line require-await
+  return withTimeoutOption(async function resolve (cid, path, options) { // eslint-disable-line require-await
     [cid, path, options] = parseArgs(cid, path, options)
 
     if (options.preload !== false) {
       preload(cid)
     }
+    const { signal, timeout } = options
 
-    yield * ipld.resolve(cid, path, { signal: options.signal })
+    try {
+      let lastCid = cid
+      let lastRemainderPath = path
+
+      if (path) {
+        for await (const { value, remainderPath } of ipld.resolve(cid, path, {
+          signal,
+          timeout
+        })) {
+          if (!CID.isCID(value)) {
+            break
+          }
+
+          lastRemainderPath = remainderPath
+          lastCid = value
+        }
+      }
+
+      return {
+        value: lastCid,
+        remainderPath: lastRemainderPath || ''
+      }
+
+    } finally {
+      if (release) {
+        release()
+      }
+    }
   })
 }