Function assertEquals

examples/acceptance/area-style-color.ts:22–32

(actual: unknown, expected: unknown, message: string)

let failed = 0;

function assertEquals(actual: unknown, expected: unknown, message: string): void {
  if (actual === expected) {
    console.log(`${GREEN}✓${RESET} ${message}`);
    passed++;
  } else {
    console.error(`${RED}✗${RESET} ${message}`);
    console.error(`  Expected: ${expected}`);
    console.error(`  Actual:   ${actual}`);
    failed++;
  }
}

function testAreaSeriesColorPrecedence() {
  console.log('\n=== Area Series Color Precedence Tests ===\n');