mirror of
https://github.com/robonen/tools.git
synced 2026-03-20 19:04:46 +00:00
23 lines
654 B
TypeScript
23 lines
654 B
TypeScript
/**
|
|
* @name flagsGenerator
|
|
* @category Bits
|
|
* @description Create a function that generates unique flags
|
|
*
|
|
* @returns {Function} A function that generates unique flags
|
|
* @throws {RangeError} If more than 31 flags are created
|
|
*
|
|
* @since 0.0.2
|
|
*/
|
|
export function flagsGenerator() {
|
|
let lastFlag = 0;
|
|
|
|
return () => {
|
|
// 31 flags is the maximum number of flags that can be created
|
|
// (without zero) because of the 32-bit integer limit in bitwise operations
|
|
if (lastFlag & 0x40000000)
|
|
throw new RangeError('Cannot create more than 31 flags');
|
|
|
|
return (lastFlag = lastFlag === 0 ? 1 : lastFlag << 1);
|
|
};
|
|
}
|