omit leading zero for numbers between -1 and 1

Rich-Harris · Jul 31, 2018 · d73708c · d73708c
1 parent 6dad3c3
commit d73708c
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/src/index.ts b/src/index.ts
@@ -205,7 +205,9 @@ function stringifyPrimitive(thing: any) {
 	if (typeof thing === 'string') return JSON.stringify(thing).replace(unsafe, escape);
 	if (thing === void 0) return 'void 0';
 	if (thing === 0 && 1 / thing < 0) return '-0';
-	return String(thing);
+	const str = String(thing);
+	if (typeof thing === 'number') return str.replace(/^(-)?0\./, '$1.');
+	return str;
 }
 
 function getType(thing: any) {

diff --git a/test/test.ts b/test/test.ts
@@ -14,6 +14,8 @@ describe('devalue', () => {
 		test('number', 42, '42');
 		test('negative number', -42, '-42');
 		test('negative zero', -0, '-0');
+		test('positive decimal', 0.1, '.1');
+		test('negative decimal', -0.1, '-.1');
 		test('string', 'woo!!!', '"woo!!!"');
 		test('boolean', true, 'true');
 		test('Number', new Number(42), 'Object(42)');