Store resolved path to file

Author: Septh

source/magic-json.test.ts

@@ -1,5 +1,6 @@
 import { describe, test } from 'node:test'
 import assert from 'node:assert/strict'
+import path from 'node:path'
 import json, { type Metadata } from './magic-json.js'
 
 type IndentationPattern = [ indent: string, description: string, eol: string ]
@@ -141,3 +142,12 @@ describe('Line endings', () => {
         assert.equal(meta.useCRLF, true)
     })
 })
+
+describe('metadata', () => {
+
+    test('Stores resolved path to file', async () => {
+        const obj = await json.fromFile('./package.json')
+        const meta = json['getMetadata'](obj)
+        assert(meta?.filepath === path.resolve('./package.json'))
+    })
+})

source/magic-json.ts

@@ -1,3 +1,4 @@
+import path from 'node:path'
 import { readFile, writeFile } from 'node:fs/promises'
 import { deprecate } from 'node:util'
 
@@ -42,7 +43,7 @@ export default abstract class MagicJSON {
         const json = this.parse(text)
         const meta = this.#metas.get(json)
         if (meta)
-            meta.filepath = filepath
+            meta.filepath = path.resolve(filepath)
         return json
     }