Conflict with format prop and SVG format attribute

[joaogranado]

With new support for SVG elements, added on react 15.0.0, format attribute is considered by the renderer a valid HTML attribute, resulting in the element being rendered with the content of the format prop, which in this case it is the raw output of the function being passed.

<div format="function format(value) {
  return format;
}">

I would suggest to remove format (and consequently every other unnecessary prop) from the props passed to React.createElement on render method. This could be easily accomplished on the destructuring assignment:

const { component, format, value, frameStyle, stepPrecision, ...rest } = this.props;

// ...

return React.createElement(
  component,
  { ...rest, style },
  format(adjustedValue)
);

Although this is a quick fix, I would suggest to rename format to something like formatValue, but it is up to you, since would lead to a breaking change. IMHO it would be a better solution in order to avoid conflicts with SVG's format attribute (considering the fact that this component supports SVG).

[nunorafaelrocha]

Agree with renaming to formatValue.

[ameyms]

I agree. I will rename it to formatValue. PRs also welcome.