packages/instant/src/style/util.ts


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import { ObjectMap } from '@0x/types';
import * as _ from 'lodash';

export const cssRuleIfExists = (props: ObjectMap<any>, rule: string): string => {
    const camelCaseRule = _.camelCase(rule);
    const ruleValueIfExists = props[camelCaseRule];
    if (!_.isUndefined(ruleValueIfExists)) {
        return `${rule}: ${ruleValueIfExists};`;
    }
    return '';
};