38 lines
887 B
JavaScript
38 lines
887 B
JavaScript
'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _stream = require('stream');
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var _crypto = require('crypto');
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class HashStream extends _stream.Transform {
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constructor(algo) {
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var _ref = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];
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var _ref$encoding = _ref.encoding;
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let encoding = _ref$encoding === undefined ? 'hex' : _ref$encoding;
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super({ objectMode: true });
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this.algo = algo;
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this.digestEncoding = encoding;
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this.hashSum = (0, _crypto.createHash)(algo);
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}
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_transform(chunk, encoding, cb) {
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// Update hash sum objects
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this.hashSum.update(chunk);
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cb();
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}
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_flush(cb) {
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// Compute hash digest
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const digest = this.hashSum.digest(this.digestEncoding);
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// this.emit('hash', hash)
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this.push({ digest });
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cb(null);
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}
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}
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exports.default = HashStream; |