TypeScript function to create semantic version number

semver.ts

/**
 * Generates a semantic version number from the given {@link major},
 * {@link minor}, and {@link patch} numbers.
 *
 * @remarks
 * Inspired by the PHP [`PHP_VERSION_ID`][l2] constant to get the current
 * version as an integer.
 *
 * See:
 *
 * - [PHP: phpversion - Manual][l1]
 * - [PHP: Predefined Constants - Manual][l2]
 *
 * [l1]: https://php.net/manual/function.phpversion.php
 * [l2]: https://php.net/manual/reserved.constants.php#constant.php-version-id
 *
 * @example
 * ```typescript
 * getSemVer(1, 2, 3); // Returns: 10203
 * getSemVer(1); // Returns: 10000
 * getSemVer(1, 101); // Throws Error: Minor must be less than or equal to 100.
 * getSemVer(1, 0.3, 5); // Throws Error: All parameters must be integers.
 *
 * // Comparing versions
 * const version1 = getSemVer(1, 2, 3); // 10203
 * const version2 = getSemVer(1, 3, 0); // 10300
 * console.log(version1 < version2); // true
 * ```
 *
 * @throws If any of the parameters are not integers.
 * @throws If the minor or patch numbers are greater than 100.
 * @param major - The major version number.
 * @param minor - The minor version number. Defaults to `0`.
 * @param patch - The patch version number. Defaults to `0`.
 * @returns The semantic version number as a single integer.
 */
export function createSemVer(
	major: number,
	minor: number = 0,
	patch: number = 0
): number
{
	const isIntegers: boolean = Number.isInteger(major) && Number.isInteger(
		minor
	) && Number.isInteger(patch);

	if (!isIntegers) {
		throw new Error('All parameters must be integers.');
	}
	else if (minor > 100 || patch > 100) {
		throw new Error(
			'Minor and patch numbers must be less than or equal to 100.'
		);
	}
	return (major * 10_000) + (minor * 100) + patch;
}