function getCustomComponentTags(config) {
    let {usingComponents} = config || {};
    if (!usingComponents) {
        return;
    }

    return Object.keys(usingComponents).map(k => toHyphen(k));
}
function getCustomComponentTags(config) {
    let {usingComponents} = config || {};
    if (!usingComponents) {
        return;
    }

    return Object.keys(usingComponents).map(k => toHyphen(k));
}
function getCustomComponentTags ( config ) { let { usingComponents } = config || { } ; if ( ! usingComponents ) { return ; } return Object . keys ( usingComponents ) . map ( k => toHyphen ( k ) ) ; }
Get custom component tags

@inner
@param {Object} config the component config
@return {?Array.<string>}
Get custom component tags