static async loadFromFile(filePath)

Loads JSON data from a file and returns a JsonManager instance.

Parameters:

• filePath (string) – Path to the JSON file.

Returns: Promise<JsonManager> – A new instance containing the loaded data.

Example:

          
            1const jm = await JsonManager.loadFromFile("./data.json");
          
        

Edge Cases:

• Throws an error if the file does not exist or contains invalid JSON.

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