in packages/extract-svg-sprite-webpack-plugin/lib/utils/helpers.js [32:42]
function getPluginFromLoaderContext(loaderContext) {
const { _compiler: compiler } = loaderContext;
const parentCompiler = compiler.isChild()
? compiler.parentCompilation.compiler
: null;
return parentCompiler
? parentCompiler.options.plugins.find(p => p.NAMESPACE && p.NAMESPACE === NAMESPACE)
: loaderContext[NAMESPACE];
}