react-native-svg/lib/extract/extractClipPath.js

import clipReg from "./patternReg";

const clipRules = {
    evenodd: 0,
    nonzero: 1
};

export default function(props) {
    let { clipPath, clipRule } = props;
    let clipPathProps = {};

    if (clipPath) {
        clipPathProps.clipRule = clipRules[clipRule] === 0 ? 0 : 1;

        let matched = clipPath.match(clipReg);

        if (matched) {
            clipPathProps.clipPath = matched[1];
        } else {
            console.warn(
                'Invalid `clipPath` prop, expected a clipPath like `"#id"`, but got: "' +
                    clipPath +
                    '"'
            );
        }
    }

    return clipPathProps;
}