fix: transactions populated from RPC requests retain original account key order

web3.js/.eslintrc.js

@@ -31,14 +31,6 @@ module.exports = {
         'newlines-between': 'always',
       },
     ],
-    indent: [
-      'error',
-      2,
-      {
-        MemberExpression: 1,
-        SwitchCase: 1,
-      },
-    ],
     'linebreak-style': ['error', 'unix'],
     'no-console': [0],
     'no-trailing-spaces': ['error'],

web3.js/src/transaction.ts

@@ -66,6 +66,19 @@ export type SerializeConfig = {
   verifySignatures?: boolean;
 };
 
+/**
+ * @internal
+ */
+export interface TransactionInstructionJSON {
+  keys: {
+    pubkey: string;
+    isSigner: boolean;
+    isWritable: boolean;
+  }[];
+  programId: string;
+  data: number[];
+}
+
 /**
  * Transaction Instruction class
  */
@@ -93,6 +106,21 @@ export class TransactionInstruction {
       this.data = opts.data;
     }
   }
+
+  /**
+   * @internal
+   */
+  toJSON(): TransactionInstructionJSON {
+    return {
+      keys: this.keys.map(({pubkey, isSigner, isWritable}) => ({
+        pubkey: pubkey.toJSON(),
+        isSigner,
+        isWritable,
+      })),
+      programId: this.programId.toJSON(),
+      data: [...this.data],
+    };
+  }
 }
 
 /**
@@ -128,6 +156,20 @@ export type NonceInformation = {
   nonceInstruction: TransactionInstruction;
 };
 
+/**
+ * @internal
+ */
+export interface TransactionJSON {
+  recentBlockhash: string | null;
+  feePayer: string | null;
+  nonceInfo: {
+    nonce: string;
+    nonceInstruction: TransactionInstructionJSON;
+  } | null;
+  instructions: TransactionInstructionJSON[];
+  signatures: {publicKey: string; signature: number[] | null}[];
+}
+
 /**
  * Transaction class
  */
@@ -169,13 +211,44 @@ export class Transaction {
    */
   nonceInfo?: NonceInformation;
 
+  /**
+   * @internal
+   */
+  _message?: Message;
+
+  /**
+   * @internal
+   */
+  _json?: TransactionJSON;
+
   /**
    * Construct an empty Transaction
    */
   constructor(opts?: TransactionCtorFields) {
     opts && Object.assign(this, opts);
   }
 
+  /**
+   * @internal
+   */
+  toJSON(): TransactionJSON {
+    return {
+      recentBlockhash: this.recentBlockhash || null,
+      feePayer: this.feePayer ? this.feePayer.toJSON() : null,
+      nonceInfo: this.nonceInfo
+        ? {
+            nonce: this.nonceInfo.nonce,
+            nonceInstruction: this.nonceInfo.nonceInstruction.toJSON(),
+          }
+        : null,
+      instructions: this.instructions.map(instruction => instruction.toJSON()),
+      signatures: this.signatures.map(({publicKey, signature}) => ({
+        publicKey: publicKey.toJSON(),
+        signature: signature ? [...signature] : null,
+      })),
+    };
+  }
+
   /**
    * Add one or more instructions to this Transaction
    */
@@ -204,6 +277,15 @@ export class Transaction {
    * Compile transaction data
    */
   compileMessage(): Message {
+    if (this._message) {
+      if (JSON.stringify(this.toJSON()) !== JSON.stringify(this._json)) {
+        throw new Error(
+          'Transaction mutated after being populated from Message',
+        );
+      }
+      return this._message;
+    }
+
     const {nonceInfo} = this;
     if (nonceInfo && this.instructions[0] != nonceInfo.nonceInstruction) {
       this.recentBlockhash = nonceInfo.nonce;
@@ -719,6 +801,9 @@ export class Transaction {
       );
     });
 
+    transaction._message = message;
+    transaction._json = transaction.toJSON();
+
     return transaction;
   }
 }

web3.js/test/transaction.test.ts

@@ -365,14 +365,14 @@ describe('Transaction', () => {
     }).add(transfer);
     expectedTransaction.sign(sender);
 
-    const wireTransaction = Buffer.from(
+    const serializedTransaction = Buffer.from(
       'AVuErQHaXv0SG0/PchunfxHKt8wMRfMZzqV0tkC5qO6owYxWU2v871AoWywGoFQr4z+q/7mE8lIufNl/kxj+nQ0BAAEDE5j2LG0aRXxRumpLXz29L2n8qTIWIY3ImX5Ba9F9k8r9Q5/Mtmcn8onFxt47xKj+XdXXd3C8j/FcPu7csUrz/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAxJrndgN4IFTxep3s6kO0ROug7bEsbx0xxuDkqEvwUusBAgIAAQwCAAAAMQAAAAAAAAA=',
       'base64',
     );
-    const tx = Transaction.from(wireTransaction);
+    const deserializedTransaction = Transaction.from(serializedTransaction);
 
-    expect(tx).to.eql(expectedTransaction);
-    expect(wireTransaction).to.eql(expectedTransaction.serialize());
+    expect(expectedTransaction.serialize()).to.eql(serializedTransaction);
+    expect(deserializedTransaction.serialize()).to.eql(serializedTransaction);
   });
 
   it('populate transaction', () => {
@@ -409,6 +409,11 @@ describe('Transaction', () => {
     expect(transaction.instructions).to.have.length(1);
     expect(transaction.signatures).to.have.length(2);
     expect(transaction.recentBlockhash).to.eq(recentBlockhash);
+
+    transaction.feePayer = new PublicKey(6);
+    expect(() => transaction.compileMessage()).to.throw(
+      'Transaction mutated after being populated from Message',
+    );
   });
 
   it('serialize unsigned transaction', () => {