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stdlib-js · Jul 26, 2023 · 4b7f882 · 4b7f882
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diff --git a/streams/binomial/lib/factory.js b/streams/binomial/lib/factory.js
@@ -20,7 +20,9 @@
 
 // MODULES //
 
+var isPlainObject = require( '@stdlib/assert/is-plain-object' );
 var assign = require( '@stdlib/object/assign' );
+var format = require( '@stdlib/string/format' );
 var RandomStream = require( './main.js' );
 
 
@@ -42,6 +44,7 @@ var RandomStream = require( './main.js' );
 * @param {PRNGStateMT19937} [options.state] - pseudorandom number generator state
 * @param {boolean} [options.copy=true] - boolean indicating whether to copy a provided pseudorandom number generator state
 * @param {PositiveInteger} [options.siter] - number of iterations after which to emit the PRNG state
+* @throws {TypeError} options argument must be an object
 * @returns {Function} stream factory
 *
 * @example
@@ -68,8 +71,14 @@ function factory( n, p, options ) {
 
 	nargs = arguments.length;
 	if ( nargs === 1 ) {
+		if ( !isPlainObject( n ) ) {
+			throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', n ) );
+		}
 		opts = assign( {}, n );
 	} else if ( nargs > 2 ) {
+		if ( !isPlainObject( options ) ) {
+			throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
+		}
 		opts = assign( {}, options );
 	} else {
 		opts = {};

diff --git a/streams/cauchy/lib/factory.js b/streams/cauchy/lib/factory.js
@@ -20,7 +20,9 @@
 
 // MODULES //
 
+var isPlainObject = require( '@stdlib/assert/is-plain-object' );
 var assign = require( '@stdlib/object/assign' );
+var format = require( '@stdlib/string/format' );
 var RandomStream = require( './main.js' );
 
 
@@ -42,6 +44,7 @@ var RandomStream = require( './main.js' );
 * @param {PRNGStateMT19937} [options.state] - pseudorandom number generator state
 * @param {boolean} [options.copy=true] - boolean indicating whether to copy a provided pseudorandom number generator state
 * @param {PositiveInteger} [options.siter] - number of iterations after which to emit the PRNG state
+* @throws {TypeError} options argument must be an object
 * @returns {Function} stream factory
 *
 * @example
@@ -68,8 +71,14 @@ function factory( x0, gamma, options ) {
 
 	nargs = arguments.length;
 	if ( nargs === 1 ) {
+		if ( !isPlainObject( x0 ) ) {
+			throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', x0 ) );
+		}
 		opts = assign( {}, x0 );
 	} else if ( nargs > 2 ) {
+		if ( !isPlainObject( options ) ) {
+			throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
+		}
 		opts = assign( {}, options );
 	} else {
 		opts = {};

diff --git a/streams/chi/lib/factory.js b/streams/chi/lib/factory.js
@@ -20,8 +20,10 @@
 
 // MODULES //
 
+var isPlainObject = require( '@stdlib/assert/is-plain-object' );
 var isPositive = require( '@stdlib/assert/is-positive-number' ).isPrimitive;
 var assign = require( '@stdlib/object/assign' );
+var format = require( '@stdlib/string/format' );
 var RandomStream = require( './main.js' );
 
 
@@ -42,6 +44,7 @@ var RandomStream = require( './main.js' );
 * @param {PRNGStateMT19937} [options.state] - pseudorandom number generator state
 * @param {boolean} [options.copy=true] - boolean indicating whether to copy a provided pseudorandom number generator state
 * @param {PositiveInteger} [options.siter] - number of iterations after which to emit the PRNG state
+* @throws {TypeError} options argument must be an object
 * @returns {Function} stream factory
 *
 * @example
@@ -68,13 +71,19 @@ function factory( k, options ) {
 
 	nargs = arguments.length;
 	if ( nargs > 1 ) {
+		if ( !isPlainObject( options ) ) {
+			throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
+		}
 		fcn = createStream2;
 		opts = assign( {}, options );
 	} else if ( nargs === 1 ) {
 		if ( isPositive( k ) ) {
 			fcn = createStream2;
 			opts = {};
 		} else {
+			if ( !isPlainObject( k ) ) {
+				throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', k ) );
+			}
 			opts = assign( {}, k );
 			fcn = createStream1;
 		}