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22 lines
693 B
22 lines
693 B
import {createHash} from 'crypto';
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import * as fs from 'fs';
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/**
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* Computes hash of the file at the given path, using 'sha1' by default, or any algorithm
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* supported by crypto.createHash().
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*/
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export async function checksumFile(filePath: string, algorithm: string = 'sha1'): Promise<string> {
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const shaSum = createHash(algorithm);
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const stream = fs.createReadStream(filePath);
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try {
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stream.on('data', (data) => shaSum.update(data));
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await new Promise<void>((resolve, reject) => {
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stream.on('end', resolve);
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stream.on('error', reject);
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});
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return shaSum.digest('hex');
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} finally {
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stream.removeAllListeners(); // Isn't strictly necessary.
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}
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}
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