add estimategas optional parameter to functions

.eslintrc

@@ -16,7 +16,8 @@
   "rules": {
     "no-empty": ["error", { "allowEmptyCatch": true }],
     "prefer-destructuring": ["warn", { "object": true, "array": false }],
-    "no-dupe-class-members": ["warn"],
+    "no-dupe-class-members": "off",
+    "no-redeclare": "off",
     "no-useless-constructor": ["warn"],
     "no-unused-vars": ["warn"],
     "constructor-super": ["warn"]

src/contracts/factories/NFTFactory.ts

@@ -33,7 +33,11 @@ export class NftFactory extends SmartContractWithAddress {
    * @param {NFTCreateData} nftData
    * @return {Promise<string>} NFT datatoken address
    */
-  public async createNFT(address: string, nftData: NftCreateData): Promise<string> {
+  public async createNFT<G extends boolean = false>(
+    address: string,
+    nftData: NftCreateData,
+    estimateGas?: G
+  ): Promise<G extends false ? string : number> {
     if (!nftData.templateIndex) nftData.templateIndex = 1
 
     if (!nftData.name || !nftData.symbol) {
@@ -63,6 +67,7 @@ export class NftFactory extends SmartContractWithAddress {
       nftData.transferable,
       nftData.owner
     )
+    if (estimateGas) return estGas
 
     // Invoke createToken function of the contract
     const trxReceipt = await this.contract.methods
@@ -180,10 +185,11 @@ export class NftFactory extends SmartContractWithAddress {
    * @param {String} templateAddress template address to add
    * @return {Promise<TransactionReceipt>}
    */
-  public async addNFTTemplate(
+  public async addNFTTemplate<G extends boolean = false>(
     address: string,
-    templateAddress: string
-  ): Promise<TransactionReceipt> {
+    templateAddress: string,
+    estimateGas?: G
+  ): Promise<G extends false ? TransactionReceipt : number> {
     if ((await this.getOwner()) !== address) {
       throw new Error(`Caller is not Factory Owner`)
     }
@@ -196,6 +202,7 @@ export class NftFactory extends SmartContractWithAddress {
       this.contract.methods.add721TokenTemplate,
       templateAddress
     )
+    if (estimateGas) return estGas
 
     // Invoke add721TokenTemplate function of the contract
     const trxReceipt = await this.contract.methods