removeTypeDuplicates.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = removeTypeDuplicates;

var _generated = require("../../validators/generated");

function removeTypeDuplicates(nodes) {
  const generics = {};
  const bases = {};
  const typeGroups = new Set();
  const types = [];

  for (let i = 0; i < nodes.length; i++) {
    const node = nodes[i];
    if (!node) continue;

    if (types.indexOf(node) >= 0) {
      continue;
    }

    if ((0, _generated.isTSAnyKeyword)(node)) {
      return [node];
    }

    if ((0, _generated.isTSBaseType)(node)) {
      bases[node.type] = node;
      continue;
    }

    if ((0, _generated.isTSUnionType)(node)) {
      if (!typeGroups.has(node.types)) {
        nodes.push(...node.types);
        typeGroups.add(node.types);
      }

      continue;
    }

    types.push(node);
  }

  for (const type of Object.keys(bases)) {
    types.push(bases[type]);
  }

  for (const name of Object.keys(generics)) {
    types.push(generics[name]);
  }

  return types;
}