Use named capture group

lib/stackparser.js

@@ -1,14 +1,9 @@
-const regAssertParser = /(.*?)\n+(.*?)\n+((    at.*?file:\/\/(.*?):(\d+):(\d+).*?\n).*)/s
+const regAssertParser = /(?<title>.*?)\n+(?<diff>.*?)\n+(?<stacktrace>    (?<where>at.*?file:\/\/(?<file>.*?):(?<line>\d+):(?<column>\d+)\)?)\n.*)/s
 
 const stackParser = (stack) => {
   const m = stack.match(regAssertParser)
 
-  const info = m
-    .slice(1)
-    .map(x => x.trim())
-  const [title, diff, stacktrace, where, file, line, column] = info
-
-  return { title, diff, where, file, line, column, stacktrace }
+  return m.groups
 }
 
 export { stackParser }

lib/stackparser.test.js

@@ -11,9 +11,14 @@ test('Diff', () => {
   }
   catch (e) {
     const stack = stackParser(e.stack)
+    assert.equal(stack.title, 'AssertionError [ERR_ASSERTION]: Expected values to be strictly deep-equal:')
     assert.ok(stack.diff.includes("name: 'Name'"))
     assert.ok(stack.diff.includes("name: 'Name2'"))
-    assert.ok(stack.where.includes('stackparser.test.js'))
+    assert.equal(stack.where, 'at Object.fn (file:///home/taz/code/metaltest/lib/stackparser.test.js:10:12)')
+    assert.equal(stack.file, '/home/taz/code/metaltest/lib/stackparser.test.js')
+    assert.equal(stack.line, '10')
+    assert.equal(stack.column, '12')
+    assert.ok(stack.stacktrace.startsWith('    at Object.fn (file:///home/taz/code/metaltest/lib/stackparser.test.js:10:12)'))
   }
 })