22 lines
585 B
JavaScript
22 lines
585 B
JavaScript
const fs = require('fs')
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const path = require('path')
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const filepath = path.join(process.cwd(), 'hello.txt')
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fs.readFile(filepath, 'utf8', function (err, contents) {
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if (err) {
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return console.log(err)
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}
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console.log('File Contents:', contents)
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const upperContents = contents.toUpperCase()
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setTimeout(() => updateFile(filepath, upperContents), 10)
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})
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function updateFile(filepath, contents) {
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fs.writeFile(filepath, contents, function (err) {
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if (err) throw err
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console.log('File updated.')
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})
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}
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setInterval(() => process.stdout.write('**** \n'), 1).unref() |