Method estimate

lib/TransactionKit.ts:1275–1784

* Estimates the gas and cost for the currently selected transaction. * * This method validates the current transaction context and performs an estimation using: * - modular mode: the Etherspot Modular SDK batch and estimate flow * - delegatedEoa mode: viem account abstraction with EIP-77

({
    paymasterDetails,
    gasDetails,
    callGasLimit,
    authorization,
  }: EstimateSingleTransactionParams = {})

   *   - `paymasterDetails` and manual `userOpOverrides` are not supported.
   */
  async estimate({
    paymasterDetails,
    gasDetails,
    callGasLimit,
    authorization,
  }: EstimateSingleTransactionParams = {}): Promise<
    TransactionEstimateResult & IEstimatedTransaction
  > {
    if (this.selectedBatchName) {
      log(
        'estimate(): Batch selected, throwing error.',
        undefined,
        this.debugMode
      );
      this.throwError(
        'estimate(): Cannot estimate a batch with estimate(). Use estimateBatches() instead.'
      );
    }
    if (!this.selectedTransactionName || !this.workingTransaction) {
      const result = {
        to: '',
        chainId: this.#etherspotProvider.getChainId(),
        errorMessage: 'No named transaction to estimate. Call name() first.',
        errorType: 'VALIDATION_ERROR' as const,
        isEstimatedSuccessfully: false,
      };
      log(
        'estimate(): No named transaction, returning error result.',
        result,
        this.debugMode
      );
      return { ...result, ...this };
    }

    // Only validate provider in modular mode
    const walletMode = this.#etherspotProvider.getWalletMode();
    if (walletMode === 'modular') {
      // Reject authorization in modular mode
      if (authorization) {
        const result = {
          to: this.workingTransaction?.to || '',
          chainId:
            this.workingTransaction?.chainId ??
            this.#etherspotProvider.getChainId(),
          errorMessage:
            'authorization is only supported in delegatedEoa mode. Remove authorization or switch walletMode to delegatedEoa.',
          errorType: 'VALIDATION_ERROR' as const,
          isEstimatedSuccessfully: false,
        };
        log(
          'estimate(): authorization provided in modular mode',
          result,
          this.debugMode
        );
        this.isEstimating = false;
        this.containsEstimatingError = true;
        return { ...result, ...this };
      }