@thi.ng/associative/internal/equiv.js

ES Map/Set-compatible implementations with customizable equality semantics & supporting operations

import { equiv } from "@thi.ng/equiv";
const __equivMap = (a, b) => {
  if (a === b) {
    return true;
  }
  if (!(b instanceof Map) || a.size !== b.size) {
    return false;
  }
  for (let p of a.entries()) {
    if (!equiv(b.get(p[0]), p[1])) {
      return false;
    }
  }
  return true;
};
const __equivSet = (a, b) => {
  if (a === b) {
    return true;
  }
  if (!(b instanceof Set) || a.size !== b.size) {
    return false;
  }
  for (let k of a.keys()) {
    if (!b.has(k)) {
      return false;
    }
  }
  return true;
};
export {
  __equivMap,
  __equivSet
};