Recursively replaces %key% strings in value with translations. callback is used when only default (package.nls.json) exists; e.g. backend passes Theia's Localization.localize for fallback, build-time can use (_, d) => d.
Recursively replaces %key% strings in value with translations. callback is used when only default (package.nls.json) exists; e.g. backend passes Theia's Localization.localize for fallback, build-time can use (_, d) => d.