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* @license Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* eslint-disable no-underscore-dangle */
'use strict';
// MODULES //
var isNodeDuplexStreamLike = require( '@stdlib/assert/is-node-duplex-stream-like' );
// MAIN //
/**
* Tests if a value is Node transform stream-like.
*
* @param {*} value - value to test
* @returns {boolean} boolean indicating if a value is Node transform stream-like
*
* @example
* var transformStream = require( '@stdlib/streams/node/transform' );
*
* var stream = transformStream();
*
* var bool = isNodeTransformStreamLike( stream );
* // returns true
*
* bool = isNodeTransformStreamLike( {} );
* // returns false
*/
function isNodeTransformStreamLike( value ) {
return (
// Must be duplex stream-like:
isNodeDuplexStreamLike( value ) &&
// Should have transform stream methods:
typeof value._transform === 'function'
);
}
// EXPORTS //
module.exports = isNodeTransformStreamLike;
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