Repository: browserbase/stagehand
File: lib/StagehandPage.ts (TypeScript)

Code before:
          if (!("action" in actionOrOptions)) {
            throw new StagehandError(
              "Invalid argument. Valid arguments are: a string, an ActOptions object, " +
                "or an ObserveResult WITH 'selector' and 'method' fields.",
            );
          }
        }
      } else if (typeof actionOrOptions === "string") {
        // Convert string to ActOptions
        actionOrOptions = { action: actionOrOptions };
      } else {
        throw new StagehandError(
          "Invalid argument: you may have called act with an empty ObserveResult.\n" +
            "Valid arguments are: a string, an ActOptions object, or an ObserveResult " +
            "WITH 'selector' and 'method' fields.",
        );
      }

      const { action, modelName, modelClientOptions } = actionOrOptions;

      if (this.api) {
        const opts = {
          ...actionOrOptions,
          frameId: this.rootFrameId,
          modelClientOptions:
            modelClientOptions || this.stagehand.clientOptions,
        };
        const result = await this.api.act(opts);
        this.stagehand.addToHistory("act", actionOrOptions, result);
        return result;
      }

      const requestId = Math.random().toString(36).substring(2);
      const llmClient: LLMClient = modelName
        ? this.stagehand.llmProvider.getClient(modelName, modelClientOptions)
        : this.llmClient;

      this.stagehand.log({
        category: "act",
        message: "running act",
        level: 1,
        auxiliary: {
          action: {
            value: action,
            type: "string",
          },
          requestId: {
            value: requestId,
            type: "string",
          },
          modelName: {

Review comment (suggestion):
```suggestion
            modelClientOptions || this.stagehand["modelClientOptions"],
```

Code after:
          if (!("action" in actionOrOptions)) {
            throw new StagehandError(
              "Invalid argument. Valid arguments are: a string, an ActOptions object, " +
                "or an ObserveResult WITH 'selector' and 'method' fields.",
            );
          }
        }
      } else if (typeof actionOrOptions === "string") {
        // Convert string to ActOptions
        actionOrOptions = { action: actionOrOptions };
      } else {
        throw new StagehandError(
          "Invalid argument: you may have called act with an empty ObserveResult.\n" +
            "Valid arguments are: a string, an ActOptions object, or an ObserveResult " +
            "WITH 'selector' and 'method' fields.",
        );
      }

      const { action, modelName, modelClientOptions } = actionOrOptions;

      if (this.api) {
        const opts = {
          ...actionOrOptions,
          frameId: this.rootFrameId,
          modelClientOptions:
            modelClientOptions || this.stagehand["modelClientOptions"],
        };
        const result = await this.api.act(opts);
        this.stagehand.addToHistory("act", actionOrOptions, result);
        return result;
      }

      const requestId = Math.random().toString(36).substring(2);
      const llmClient: LLMClient = modelName
        ? this.stagehand.llmProvider.getClient(modelName, modelClientOptions)
        : this.llmClient;

      this.stagehand.log({
        category: "act",
        message: "running act",
        level: 1,
        auxiliary: {
          action: {
            value: action,
            type: "string",
          },
          requestId: {
            value: requestId,
            type: "string",
          },
          modelName: {