tools/node_modules/babel-eslint/node_modules/@babel/types/lib/validators/isNodesEquivalent.js


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"use strict";

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

var _definitions = require("../definitions");

function isNodesEquivalent(a, b) {
  if (typeof a !== "object" || typeof b !== "object" || a == null || b == null) {
    return a === b;
  }

  if (a.type !== b.type) {
    return false;
  }

  const fields = Object.keys(_definitions.NODE_FIELDS[a.type] || a.type);
  const visitorKeys = _definitions.VISITOR_KEYS[a.type];

  for (const field of fields) {
    if (typeof a[field] !== typeof b[field]) {
      return false;
    }

    if (a[field] == null && b[field] == null) {
      continue;
    } else if (a[field] == null || b[field] == null) {
      return false;
    }

    if (Array.isArray(a[field])) {
      if (!Array.isArray(b[field])) {
        return false;
      }

      if (a[field].length !== b[field].length) {
        return false;
      }

      for (let i = 0; i < a[field].length; i++) {
        if (!isNodesEquivalent(a[field][i], b[field][i])) {
          return false;
        }
      }

      continue;
    }

    if (typeof a[field] === "object" && (!visitorKeys || !visitorKeys.includes(field))) {
      for (const key of Object.keys(a[field])) {
        if (a[field][key] !== b[field][key]) {
          return false;
        }
      }

      continue;
    }

    if (!isNodesEquivalent(a[field], b[field])) {
      return false;
    }
  }

  return true;
}