Avoid for-in loop

Planeshifter · Planeshifter · commit 66e6314a99fc · 2018-04-25T20:05:38.000-04:00
diff --git a/lib/node_modules/@stdlib/nlp/expand-contractions/lib/expand_contractions.js b/lib/node_modules/@stdlib/nlp/expand-contractions/lib/expand_contractions.js
@@ -20,6 +20,7 @@
 
 // MODULES //
 
+var objectKeys = require( 'object-keys' ).shim();
 var isCapitalized = require( '@stdlib/assert/is-capitalized' );
 var uncapitalize = require( '@stdlib/string/uncapitalize' );
 var capitalize = require( '@stdlib/string/capitalize' );
@@ -28,6 +29,11 @@ var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
 var CONTRACTIONS = require( './contractions.json' );
 
 
+// VARIABLES //
+
+var KEYS = objectKeys( CONTRACTIONS );
+
+
 // MAIN //
 
 /**
@@ -53,6 +59,8 @@ function expandContractions( str ) {
 	var out;
 	var key;
 	var i;
+	var j;
+
 	if ( !isString( str ) ) {
 		throw new TypeError( 'invalid input argument. Must provide a primitive string. Value: `'+str+'`.' );
 	}
@@ -61,14 +69,16 @@ function expandContractions( str ) {
 	for ( i = 0; i < tokens.length; i++ ) {
 		token = tokens[ i ];
 		if ( isCapitalized( token ) ) {
-			for ( key in CONTRACTIONS ) {
+			for ( j = 0; j < KEYS.length; j++ ) {
+				key = KEYS[ j ];
 				if ( uncapitalize( token ) === key ) {
 					token = capitalize( CONTRACTIONS[ key ] );
 					break;
 				}
 			}
 		} else {
-			for ( key in CONTRACTIONS ) {
+			for ( j = 0; j < KEYS.length; j++ ) {
+				key = KEYS[ j ];
 				if ( token === key ) {
 					token = CONTRACTIONS[ key ];
 					break;
