feat: support dot notation like coordinates.1 for headers to parse …

…into a nested array

src/csv2json.test.ts

@@ -228,6 +228,10 @@ describe('csv2json', () => {
     ])
   })
 
+  test('should parser nested fields with dot notation for indexes', () => {
+    expect(csv2json('"nested.geo.0"\r\n42\r\n')).toEqual([{ nested: { geo: [42] } }])
+  })
+
   test('should parser nested fields containing the key separator and a control character', () => {
     expect(csv2json('"nested[""field.,name""]"\r\n42\r\n')).toEqual([
       { nested: { 'field.,name': 42 } }

src/path.test.ts

@@ -21,7 +21,11 @@ describe('path', () => {
     expect(parsePath('name')).toEqual(['name'])
     expect(parsePath('address.location[0]')).toEqual(['address', 'location', 0])
     expect(parsePath('[0].name')).toEqual([0, 'name'])
+    expect(parsePath('0.name')).toEqual([0, 'name'])
+    expect(parsePath('address.location.1')).toEqual(['address', 'location', 1])
+    expect(parsePath('users.2.name')).toEqual(['users', 2, 'name'])
     expect(parsePath('[90].name')).toEqual([90, 'name'])
+    expect(parsePath('["90"].name')).toEqual(['90', 'name'])
     expect(parsePath('["prop.with.dot"]')).toEqual(['prop.with.dot'])
     expect(parsePath('["prop with space"]')).toEqual(['prop with space'])
     expect(parsePath('["prop with \'\\"]["]')).toEqual(['prop with \'"]['])

src/path.ts

@@ -46,9 +46,8 @@ export function parsePath(pathStr: string): Path {
         eatCharacter('"')
       } else {
         const prop = parseProp((c) => c === ']')
-        const index = Number(prop)
 
-        path.push(isNaN(index) ? prop : index)
+        path.push(prop)
       }
       eatCharacter(']')
     } else {
@@ -70,7 +69,10 @@ export function parsePath(pathStr: string): Path {
       }
     }
 
-    return prop
+    // match a string with only digits and optional spacing at the start and the end
+    const digitsRegex = /^ *\d+ *$/
+
+    return !unescape && digitsRegex.test(prop) ? parseInt(prop) : prop
   }
 
   function eatCharacter(char: string) {