app/node_modules/@ionic/core/components/lock-controller.js

/*!
 * (C) Ionic http://ionicframework.com - MIT License
 */
/**
 * Creates a lock controller.
 *
 * Claiming a lock means that nothing else can acquire the lock until it is released.
 * This can momentarily prevent execution of code that needs to wait for the earlier code to finish.
 * For example, this can be used to prevent multiple transitions from occurring at the same time.
 */
const createLockController = () => {
    let waitPromise;
    /**
     * When lock() is called, the lock is claimed.
     * Once a lock has been claimed, it cannot be claimed again until it is released.
     * When this function gets resolved, the lock is released, allowing it to be claimed again.
     *
     * @example ```tsx
     * const unlock = await this.lockController.lock();
     * // do other stuff
     * unlock();
     * ```
     */
    const lock = async () => {
        const p = waitPromise;
        let resolve;
        waitPromise = new Promise((r) => (resolve = r));
        if (p !== undefined) {
            await p;
        }
        return resolve;
    };
    return {
        lock,
    };
};

export { createLockController as c };