fix: inline snapshot if not called inside suite

closes #484

packages/vitest/src/integrations/snapshot/port/inlineSnapshot.ts

@@ -26,7 +26,7 @@ export async function saveInlineSnapshots(
       const pos = await getOriginalPos(map, snap)
       const index = posToNumber(code, pos!)
       const { indent } = detectIndent(code.slice(index - pos!.column))
-      replaceInlineSnap(code, s, index, snap.snapshot, indent + indent)
+      replaceInlineSnap(code, s, index, snap.snapshot, indent)
     }
 
     const transformed = s.toString()

packages/vitest/src/integrations/snapshot/port/state.ts

@@ -97,7 +97,8 @@ export default class SnapshotState {
       const error = options.error || new Error('Unknown error')
       const stacks = parseStacktrace(error)
       stacks.forEach(i => i.file = slash(i.file))
-      const stack = stacks.find(i => process.__vitest_worker__.ctx.files.includes(i.file))
+      const stackIndex = stacks.findIndex(i => i.method === 'Proxy.methodWrapper')
+      const stack = stackIndex !== -1 ? stacks[stackIndex + 1] : null
       if (!stack) {
         throw new Error(
           'Vitest: Couldn\'t infer stack frame for inline snapshot.',

test/core/test/snapshot.test.ts

@@ -1,11 +1,16 @@
 import { expect, test } from 'vitest'
+import { testOutsideInlineSnapshot } from './snapshots-outside'
 
 test('snapshot', () => {
   expect({
     this: { is: new Set(['of', 'snapshot']) },
   }).toMatchSnapshot()
 })
 
+test('outside snapshot', () => {
+  testOutsideInlineSnapshot()
+})
+
 test('inline snapshot', () => {
   expect('inline string').toMatchInlineSnapshot('"inline string"')
   expect({ foo: { type: 'object', map: new Map() } }).toMatchInlineSnapshot(`

test/core/test/snapshots-outside.ts

@@ -0,0 +1,11 @@
+import { expect } from 'vitest'
+
+export function testOutsideInlineSnapshot() {
+  return (() => {
+    expect({ foo: 'bar' }).toMatchInlineSnapshot(`
+    {
+      "foo": "bar",
+    }
+    `)
+  })()
+}