Method lock

components/runtime/src/ts/core_util.ts:198–211

()

    private waiting: ((arg: any) => any)[] = []

    private async lock() {
        if (this.locked) {
            await new Promise((complete) => {
                if (!this.locked) {
                    this.locked = true
                    complete(null)
                } else {
                    this.waiting.push(complete)
                }
            })
        } else {
            this.locked = true
        }
    }

    private unlock() {
        let next = this.waiting.shift()