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web3.js/src/connection.js

@@ -135,6 +135,11 @@ const SendTokensRpcResult = struct({
 
 /**
  * Information describing an account
+ *
+ * @typedef {Object} AccountInfo
+ * @property {number} tokens Number of tokens assigned to the account
+ * @property {PublicKey} programId Identifier of the program assigned to the account
+ * @property {?Buffer} userdata Optional userdata assigned to the account
  */
 type AccountInfo = {
   tokens: number,

web3.js/src/transaction.js

@@ -18,6 +18,13 @@ export type TransactionId = string;
 
 /**
  * List of Transaction object fields that may be initialized at construction
+ *
+ * @typedef {Object} TransactionCtorFields
+ * @property {?Buffer} signature
+ * @property {?Array<PublicKey>} keys
+ * @property {?PublicKey} programId
+ * @property {?number} fee
+ * @property {?Buffer} userdata
  */
 type TransactionCtorFields = {|
   signature?: Buffer;