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enable_per_file_coverage

Note

This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information.

Begin collecting code coverage on all subsequent calls into files in $files during this request

namespace HH;

function enable_per_file_coverage(
  keyset<string> $files,
): void;

The requst must be executing in non-RepoAuthoritative mode and the server must be configured with Eval.EnablePerFileCoverage = true.

Parameters​

  • keyset<string> $files a list of paths to collect coverage from

Returns​

  • void