/// /// import * as React from "react"; import * as Measure from "react-measure"; class Test extends React.Component<{}, {}> { render() { return ( test ); } onMeasure(dimensions: Measure.Dimensions): void { dimensions.width; dimensions.height; } } class Test2 extends React.Component<{}, {}> { render() { return ( {(dimensions: Measure.Dimensions) => Height: {dimensions.height} } ); } }