explicitly define types on AST nodes so that rollup does't mangle them
explicitly define types on AST nodes so that rollup does't mangle them

zbraniecki/l20n.js,projectfluent/fluent.js,projectfluent/fluent.js,zbraniecki/fluent.js,stasm/l20n.js,zbraniecki/fluent.js,l20n/l20n.js,projectfluent/fluent.js