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20 lines
599 B
20 lines
599 B
const fs = require('fs').promises;
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// you have to do nested calls any time you need the result of the previous calculation
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const read_file = (fname) => {
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fs.open(fname, 'r').then((fh) => {
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fh.stat().then((stat) => {
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let buf = Buffer.alloc(stat.size);
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fh.read(buf, 0, stat.size, null)
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.then((result) => {
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console.log(`Read ${result.bytesRead} bytes: ${result.buffer.toString()}`);
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}).catch((err) => {
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console.error(err);
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});
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}).catch((err) => console.error(err));
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}).catch((err) => console.error(err));
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}
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read_file('test.txt');
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