compareLowers (cache/is-super-range.ts)

Utility functions to compare key ranges and determine super ranges in Dexie.js.

// Source: https://github.com/dexie/Dexie.js | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
import { cmp } from '../../functions/cmp';
import { DBCoreKeyRange } from '../../public/types/dbcore';

export function compareLowers(
  lower1: any,
  lower2: any,
  lowerOpen1: boolean,
  lowerOpen2: boolean
) {
  if (lower1 === undefined) return lower2 !== undefined ? -1 : 0;
  if (lower2 === undefined) return 1; // since lower1 !== undefined
  const c = cmp(lower1, lower2);
  if (c === 0) {
    if (lowerOpen1 && lowerOpen2) return 0;
    if (lowerOpen1) return 1;
    if (lowerOpen2) return -1;
  }
  return c;
}

export function compareUppers(
  upper1: any,
  upper2: any,
  upperOpen1:

... (truncated -- full source via MCP)