21 lines
393 B
JavaScript
21 lines
393 B
JavaScript
const { Transform } = require('stream');
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class Limiter extends Transform {
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constructor(limit) {
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super();
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this.limit = limit;
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this.length = 0;
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}
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_transform(chunk, encoding, callback) {
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this.length += chunk.length;
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this.push(chunk);
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if (this.length > this.limit) {
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return callback(new Error('limit'));
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}
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callback();
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}
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}
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module.exports = Limiter;
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