test-utils

Private package exports utilities for multiple end-to-end tests or packages.

alignedAnsiStyleSerializer

Display colors concisely and clearly so we can review changes quickly and confidently:

• reports when matchers fail
• annotation and comparison lines from differences

Raw snapshot avoids distracting \\ or \" escape sequences from default string serialization.

Tag names have consistent length to align columns like Expected and Received or comparison lines:

import {alignedAnsiStyleSerializer} from '@jest/test-utils';

expect.addSnapshotSerializer(alignedAnsiStyleSerializer);