one/dist/esm/platform/data-scanner/recognizedItems.mjs

One is a React framework for web, iOS, and Android apps.

function recognizedItems(native) {
	return { [Symbol.asyncIterator]() {
		const queue = [];
		const waiting = [];
		let ended = false;
		let canceled = false;
		const end = () => {
			ended = true;
			for (const resolve of waiting.splice(0)) resolve({
				done: true,
				value: void 0
			});
		};
		const id = native.subscribeRecognizedItems((items) => {
			if (ended) return;
			const resolve = waiting.shift();
			if (resolve) resolve({
				done: false,
				value: items
			});
			else queue.push(items);
		}, end);
		return {
			next() {
				const value = queue.shift();
				if (value) return Promise.resolve({
					done: false,
					value
				});
				if (ended) return Promise.resolve({
					done: true,
					value: void 0
				});
				return new Promise((resolve) => waiting.push(resolve));
			},
			async return() {
				queue.length = 0;
				end();
				if (!canceled) {
					canceled = true;
					native.unsubscribeRecognizedItems(id);
				}
				return {
					done: true,
					value: void 0
				};
			}
		};
	} };
}

export { recognizedItems };
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