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    Function register

    • Registers a new extension function. Extensions are functions that help initialize blocks, usually adding dynamic behavior such as onchange handlers and mutators. These are applied using Block.applyExtension(), or the JSON "extensions" array attribute.

      Parameters

      • name: string

        The name of this extension.

      • initFn: Function

        The function to initialize an extended block.

      Returns void

      if the extension name is empty, the extension is already registered, or extensionFn is not a function.

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