Function extract_identifiers

package/svelte/compiler.js:5614–5651

(param, nodes = [])

    return extract_identifiers(param).map((node2) => node2.name);
  }
  function extract_identifiers(param, nodes = []) {
    switch (param.type) {
      case "Identifier":
        nodes.push(param);
        break;
      case "MemberExpression":
        let object = param;
        while (object.type === "MemberExpression") {
          object = object.object;
        }
        nodes.push(object);
        break;
      case "ObjectPattern":
        const handle_prop = (prop) => {
          if (prop.type === "RestElement") {
            extract_identifiers(prop.argument, nodes);
          } else {
            extract_identifiers(prop.value, nodes);
          }
        };
        param.properties.forEach(handle_prop);
        break;
      case "ArrayPattern":
        const handle_element = (element) => {
          if (element)
            extract_identifiers(element, nodes);
        };
        param.elements.forEach(handle_element);
        break;
      case "RestElement":
        extract_identifiers(param.argument, nodes);
        break;
      case "AssignmentPattern":
        extract_identifiers(param.left, nodes);
        break;
    }
    return nodes;
  }
  function push_array(array, items) {
    for (let i = 0; i < items.length; i++) {
      array.push(items[i]);