From jestjs/jest#14045 (comment)

The linked PR is about to add .toMatchNamedSnapshot() matcher to Jest. The matcher works similar to .toMatchSnapshot(), but requires setting snapshot name explicitly that allows snapshot testing in concurrent mode (details of the problem jestjs/jest#2180).

After the PR lands, eslint-plugin-jest could be helpful by adding these rules:

• no-duplicate-snapshot-names: show error if the same snapshot name was used twice in a test file
• prefer-named-snapshots: require to use .toMatchNamedSnapshot() matcher with test.concurrent (or always)

This is just a note for discussion. No action required at the moment (;