fix: accept empty String as issue message

Author: pvdlg

index.js

@@ -98,7 +98,7 @@ module.exports = options => {
 	const mentionRegexp = buildMentionRegexp(opts);
 
 	return text => {
-		if (!isString(text) || !text.trim()) {
+		if (!isString(text)) {
 			throw new TypeError('The issue text must be a String');
 		}
 

test/index.test.js

@@ -214,6 +214,13 @@ test('Empty options', t => {
 	);
 });
 
+test('Empty String', t => {
+	const empty = {actions: [], duplicates: [], mentions: [], refs: []};
+
+	t.deepEqual(m()('   '), empty);
+	t.deepEqual(m()(''), empty);
+});
+
 test('Throw TypeError for invalid options', t => {
 	t.throws(() => m([]), TypeError);
 	t.throws(() => m(1), TypeError);
@@ -226,5 +233,4 @@ test('Throw TypeError for invalid input', t => {
 	t.throws(() => m()(1), TypeError);
 	t.throws(() => m()({}), TypeError);
 	t.throws(() => m()([]), TypeError);
-	t.throws(() => m()(''), TypeError);
 });