export function objectEquals()

in src/common/util/util.ts [205:232]

• 25 lines of code
• 22 McCabe index (conditional complexity)

export function objectEquals(
  x: unknown,
  y: unknown,
  distinguishSignedZero: boolean = false
): boolean {
  if (typeof x !== 'object' || typeof y !== 'object') {
    if (typeof x === 'number' && typeof y === 'number' && Number.isNaN(x) && Number.isNaN(y)) {
      return true;
    }
    // Object.is(0.0, -0.0) is false while (0.0 === -0.0) is true. Other than +/-0.0 and NaN cases,
    // Object.is works in the same way as ===.
    return distinguishSignedZero ? Object.is(x, y) : x === y;
  }
  if (x === null || y === null) return x === y;
  if (x.constructor !== y.constructor) return false;
  if (x instanceof Function) return x === y;
  if (x instanceof RegExp) return x === y;
  if (x === y || x.valueOf() === y.valueOf()) return true;
  if (Array.isArray(x) && Array.isArray(y) && x.length !== y.length) return false;
  if (x instanceof Date) return false;
  if (!(x instanceof Object)) return false;
  if (!(y instanceof Object)) return false;

  const x1 = x as { [k: string]: unknown };
  const y1 = y as { [k: string]: unknown };
  const p = Object.keys(x);
  return Object.keys(y).every(i => p.indexOf(i) !== -1) && p.every(i => objectEquals(x1[i], y1[i]));
}