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'use strict';

const fromIterable = (iterable) =>

new ReadableStream({

start(controller) {

for (const value of iterable) {

controller.enqueue(value);

}

controller.close();

});

// Usage

const main = async () => {

const stream = fromIterable(['a', 'b', 'c', 'd']);

const reader = stream.getReader();

while (true) {

const { done, value } = await reader.read();

if (done) break;

console.log('chunk:', value);

}

};

main();