LegacyImporter<sync>

A callback that implements custom Sass loading logic for @import rules and @use rules. For renderSync, this must be a LegacySyncImporter which returns its result directly; for render, it may be either a LegacySyncImporter or a LegacyAsyncImporter which calls a callback with its result.

See importer for more details.

Deprecated

This only works with the legacy render and renderSync APIs. Use Importer with compile, compileString, compileAsync, and compileStringAsync instead.