fix: properly stringify empty arrays

src/stringify.ts

@@ -43,7 +43,7 @@ function isArrayOfTables (obj: any[]) {
 		if (extendedTypeOf(obj[i]) !== 'object') return false
 	}
 
-	return true
+	return obj.length != 0
 }
 
 function formatString (s: string) {
@@ -84,9 +84,10 @@ function stringifyValue (val: any, type = extendedTypeOf(val)) {
 }
 
 function stringifyInlineTable (obj: any) {
-	let res = '{ '
-
 	let keys = Object.keys(obj)
+	if (keys.length === 0) return '{}'
+
+	let res = '{ '
 	for (let i = 0; i < keys.length; i++) {
 		let k = keys[i]!
 		if (i) res += ', '
@@ -100,6 +101,8 @@ function stringifyInlineTable (obj: any) {
 }
 
 function stringifyArray (array: any[]) {
+	if (array.length === 0) return '[]'
+
 	let res = '[ '
 	for (let i = 0; i < array.length; i++) {
 		if (i) res += ', '

test/stringify.test.ts

@@ -26,7 +26,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-import { describe, it, expect } from 'vitest'
+import { it, expect } from 'vitest'
 import { stringify } from '../src/stringify.js'
 import TomlDate from '../src/date.js'
 
@@ -93,6 +93,19 @@ a = [ 10, 20, "30", false ]
 	expect(stringify({ a: [ 10, 20n, '30', false ] }).trim()).toBe(expected)
 })
 
+it('stringifies empty arrays', () => {
+	const expected = `
+a = []
+
+[[e]]
+a = []
+
+[[e]]
+`.trim()
+
+	expect(stringify({ a: [], e: [ { a: [] }, {} ] }).trim()).toBe(expected)
+})
+
 it('stringifies tables', () => {
 	const expected = `
 [a]