26 lines
561 B
JavaScript
26 lines
561 B
JavaScript
const fs = require("fs");
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const stream = require("stream");
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const util = require("util");
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const pipeline = util.promisify(stream.pipeline);
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const uppercase = new stream.Transform({
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transform(chunk, encoding, callback) {
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// Data processing
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callback(null, chunk.toString().toUpperCase());
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},
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});
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async function run() {
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await pipeline(
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fs.createReadStream("./file.txt"),
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uppercase,
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fs.createWriteStream("./newFile.txt")
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);
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console.log("Pipeline succeeded.");
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}
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run().catch((err) => {
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console.error("Pipeline failed.", err);
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});
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