babel-plugin-transform-modules-ui5/dist/classes/helpers/decorators.js

An unofficial babel plugin for SAP UI5.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getDecoratorClassInfo = getDecoratorClassInfo;
const classInfoValueTags = ["alias", "name", "namespace", "metadata", "renderer"];
const classInfoBoolTags = ["nonUI5"];
function getDecoratorClassInfo(node) {
  const decorators = node.decorators;
  if (!decorators || !decorators.length) {
    return {};
  }
  const decoratorsByName = groupByName(decorators);
  const info = {};
  for (const tagName of classInfoValueTags) {
    const value = getDecoratorValue(decoratorsByName[tagName.toLowerCase()]);
    if (value) {
      info[tagName] = value;
    }
  }
  for (const tagName of classInfoBoolTags) {
    const value = !!decoratorsByName[tagName.toLowerCase()];
    if (value) {
      info[tagName] = value;
    }
  }
  return info;
}
function groupByName(decorators) {
  return decorators.reduce((accumulator, decorator) => {
    const expression = decorator.expression;
    const name = expression.name || expression.callee && expression.callee.name;
    accumulator[name.toLowerCase()] = decorator;
    return accumulator;
  }, {});
}
function getDecoratorValue(decorator) {
  return (decorator && decorator.expression.arguments[0] || {}).value;
}