10 lines
307 B
JavaScript
10 lines
307 B
JavaScript
const isDuplexStream = val =>
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val !== null &&
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typeof val === 'object' &&
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typeof val.pipe === 'function' &&
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typeof val._read === 'function' &&
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typeof val._readableState === 'object' &&
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typeof val._write === 'function' &&
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typeof val._writableState === 'object';
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module.exports = isDuplexStream;
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