had to change the config-builder a bit for wasm-bindgen

Author: vsubhuman

rust/pkg/cardano_serialization_lib.js.flow

@@ -265,6 +265,14 @@ declare export var NetworkIdKind: {|
   +Mainnet: 1, // 1
 |};
 
+/**
+ */
+
+declare export var StakeCredKind: {|
+  +Key: 0, // 0
+  +Script: 1, // 1
+|};
+
 /**
  */
 
@@ -293,14 +301,6 @@ declare export var RedeemerTagKind: {|
   +Reward: 3, // 3
 |};
 
-/**
- */
-
-declare export var CoinSelectionStrategyCIP2: {|
-  +LargestFirst: 0, // 0
-  +RandomImprove: 1, // 1
-|};
-
 /**
  * Used to choosed the schema for a script JSON string
  */
@@ -333,9 +333,9 @@ declare export var MetadataJsonSchema: {|
 /**
  */
 
-declare export var StakeCredKind: {|
-  +Key: 0, // 0
-  +Script: 1, // 1
+declare export var CoinSelectionStrategyCIP2: {|
+  +LargestFirst: 0, // 0
+  +RandomImprove: 1, // 1
 |};
 
 /**
@@ -5326,6 +5326,67 @@ declare export class TransactionBuilder {
 declare export class TransactionBuilderConfig {
   free(): void;
 }
+/**
+ */
+declare export class TransactionBuilderConfigBuilder {
+  free(): void;
+
+  /**
+   * @returns {TransactionBuilderConfigBuilder}
+   */
+  static new(): TransactionBuilderConfigBuilder;
+
+  /**
+   * @param {LinearFee} fee_algo
+   * @returns {TransactionBuilderConfigBuilder}
+   */
+  fee_algo(fee_algo: LinearFee): TransactionBuilderConfigBuilder;
+
+  /**
+   * @param {BigNum} pool_deposit
+   * @returns {TransactionBuilderConfigBuilder}
+   */
+  pool_deposit(pool_deposit: BigNum): TransactionBuilderConfigBuilder;
+
+  /**
+   * @param {BigNum} key_deposit
+   * @returns {TransactionBuilderConfigBuilder}
+   */
+  key_deposit(key_deposit: BigNum): TransactionBuilderConfigBuilder;
+
+  /**
+   * @param {number} max_value_size
+   * @returns {TransactionBuilderConfigBuilder}
+   */
+  max_value_size(max_value_size: number): TransactionBuilderConfigBuilder;
+
+  /**
+   * @param {number} max_tx_size
+   * @returns {TransactionBuilderConfigBuilder}
+   */
+  max_tx_size(max_tx_size: number): TransactionBuilderConfigBuilder;
+
+  /**
+   * @param {BigNum} coins_per_utxo_word
+   * @returns {TransactionBuilderConfigBuilder}
+   */
+  coins_per_utxo_word(
+    coins_per_utxo_word: BigNum
+  ): TransactionBuilderConfigBuilder;
+
+  /**
+   * @param {boolean} prefer_pure_change
+   * @returns {TransactionBuilderConfigBuilder}
+   */
+  prefer_pure_change(
+    prefer_pure_change: boolean
+  ): TransactionBuilderConfigBuilder;
+
+  /**
+   * @returns {TransactionBuilderConfig}
+   */
+  build(): TransactionBuilderConfig;
+}
 /**
  */
 declare export class TransactionHash {

rust/src/tx_builder.rs

@@ -176,8 +176,10 @@ pub struct TransactionBuilderConfigBuilder {
     prefer_pure_change: bool,
 }
 
-impl Default for TransactionBuilderConfigBuilder {
-    fn default() -> Self {
+#[wasm_bindgen]
+impl TransactionBuilderConfigBuilder {
+
+    pub fn new() -> Self {
         Self {
             fee_algo: None,
             pool_deposit: None,
@@ -188,42 +190,40 @@ impl Default for TransactionBuilderConfigBuilder {
             prefer_pure_change: false,
         }
     }
-}
 
-impl TransactionBuilderConfigBuilder {
-    pub fn fee_algo(&mut self, fee_algo: fees::LinearFee) -> &mut Self {
+    pub fn fee_algo(&mut self, fee_algo: fees::LinearFee) -> Self {
         self.fee_algo = Some(fee_algo);
-        self
+        self.clone()
     }
 
-    pub fn pool_deposit(&mut self, pool_deposit: BigNum) -> &mut Self {
+    pub fn pool_deposit(&mut self, pool_deposit: BigNum) -> Self {
         self.pool_deposit = Some(pool_deposit);
-        self
+        self.clone()
     }
 
-    pub fn key_deposit(&mut self, key_deposit: BigNum) -> &mut Self {
+    pub fn key_deposit(&mut self, key_deposit: BigNum) -> Self {
         self.key_deposit = Some(key_deposit);
-        self
+        self.clone()
     }
 
-    pub fn max_value_size(&mut self, max_value_size: u32) -> &mut Self {
+    pub fn max_value_size(&mut self, max_value_size: u32) -> Self {
         self.max_value_size = Some(max_value_size);
-        self
+        self.clone()
     }
 
-    pub fn max_tx_size(&mut self, max_tx_size: u32) -> &mut Self {
+    pub fn max_tx_size(&mut self, max_tx_size: u32) -> Self {
         self.max_tx_size = Some(max_tx_size);
-        self
+        self.clone()
     }
 
-    pub fn coins_per_utxo_word(&mut self, coins_per_utxo_word: Coin) -> &mut Self {
+    pub fn coins_per_utxo_word(&mut self, coins_per_utxo_word: Coin) -> Self {
         self.coins_per_utxo_word = Some(coins_per_utxo_word);
-        self
+        self.clone()
     }
 
-    pub fn prefer_pure_change(&mut self, prefer_pure_change: bool) -> &mut Self {
+    pub fn prefer_pure_change(&mut self, prefer_pure_change: bool) -> Self {
         self.prefer_pure_change = prefer_pure_change;
-        self
+        self.clone()
     }
 
     pub fn build(&self) -> Result<TransactionBuilderConfig, JsError> {
@@ -1090,7 +1090,7 @@ mod tests {
         max_val_size: u32,
         coins_per_utxo_word: u64,
     ) -> TransactionBuilder {
-        let cfg = TransactionBuilderConfigBuilder::default()
+        let cfg = TransactionBuilderConfigBuilder::new()
             .fee_algo(linear_fee.clone())
             .pool_deposit(to_bignum(pool_deposit))
             .key_deposit(to_bignum(key_deposit))
@@ -1129,7 +1129,7 @@ mod tests {
     }
 
     fn create_tx_builder_with_fee_and_pure_change(linear_fee: &LinearFee) -> TransactionBuilder {
-        TransactionBuilder::new(&TransactionBuilderConfigBuilder::default()
+        TransactionBuilder::new(&TransactionBuilderConfigBuilder::new()
             .fee_algo(linear_fee.clone())
             .pool_deposit(to_bignum(1))
             .key_deposit(to_bignum(1))
@@ -2549,7 +2549,7 @@ mod tests {
     fn tx_builder_cip2_random_improve_when_using_all_available_inputs() {
         // we have a = 1 to test increasing fees when more inputs are added
         let linear_fee = LinearFee::new(&to_bignum(1), &to_bignum(0));
-        let cfg = TransactionBuilderConfigBuilder::default()
+        let cfg = TransactionBuilderConfigBuilder::new()
             .fee_algo(linear_fee)
             .pool_deposit(to_bignum(0))
             .key_deposit(to_bignum(0))
@@ -2576,7 +2576,7 @@ mod tests {
     fn tx_builder_cip2_random_improve_adds_enough_for_fees() {
         // we have a = 1 to test increasing fees when more inputs are added
         let linear_fee = LinearFee::new(&to_bignum(1), &to_bignum(0));
-        let cfg = TransactionBuilderConfigBuilder::default()
+        let cfg = TransactionBuilderConfigBuilder::new()
             .fee_algo(linear_fee)
             .pool_deposit(to_bignum(0))
             .key_deposit(to_bignum(0))