diff --git a/lib/node_modules/@stdlib/blas/base/dgemv/test/test.dgemv.native.js b/lib/node_modules/@stdlib/blas/base/dgemv/test/test.dgemv.native.js
index 1dd8ae30868f..90b9801682d1 100644
--- a/lib/node_modules/@stdlib/blas/base/dgemv/test/test.dgemv.native.js
+++ b/lib/node_modules/@stdlib/blas/base/dgemv/test/test.dgemv.native.js
@@ -39,7 +39,6 @@ var cxpyp = require( './fixtures/column_major_xpyp.json' );
 var cx = require( './fixtures/column_major_x_zeros.json' );
 var cxb = require( './fixtures/column_major_x_zeros_beta_one.json' );
 var ca = require( './fixtures/column_major_alpha_zero.json' );
-
 var rnt = require( './fixtures/row_major_nt.json' );
 var rt = require( './fixtures/row_major_t.json' );
 var rxnyn = require( './fixtures/row_major_xnyn.json' );
diff --git a/lib/node_modules/@stdlib/ndarray/base/unary-by/lib/main.js b/lib/node_modules/@stdlib/ndarray/base/unary-by/lib/main.js
index 303ea9a09b86..32a248e8dcc3 100644
--- a/lib/node_modules/@stdlib/ndarray/base/unary-by/lib/main.js
+++ b/lib/node_modules/@stdlib/ndarray/base/unary-by/lib/main.js
@@ -20,6 +20,7 @@
 
 // MODULES //
 
+var format = require( '@stdlib/string/format' );
 var iterationOrder = require( '@stdlib/ndarray/base/iteration-order' );
 var strides2order = require( '@stdlib/ndarray/base/strides2order' );
 var minmaxViewBufferIndex = require( '@stdlib/ndarray/base/minmax-view-buffer-index' );
@@ -224,7 +225,7 @@ function unaryBy( arrays, fcn, clbk, thisArg ) {
 	shy = y.shape;
 	ndims = shx.length;
 	if ( ndims !== shy.length ) {
-		throw new Error( 'invalid arguments. Arrays must have the same number of dimensions (i.e., same rank). ndims(x) == '+ndims+'. ndims(y) == '+shy.length+'.' );
+		throw new Error( format( 'invalid arguments. Arrays must have the same number of dimensions (i.e., same rank). ndims(x) == %d. ndims(y) == %d.', ndims, shy.length ) );
 	}
 	// Determine whether we can avoid iteration altogether...
 	if ( ndims === 0 ) {