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This commit implements the Web IDL USVString conversion, which mandates all unpaired Unicode surrogates be turned into U+FFFD REPLACEMENT CHARACTER. It also disallows Symbols to be used as USVString per spec. Certain functions call into C++ methods in the binding that use the Utf8Value class to access string arguments. Utf8Value already does the normalization using V8's String::Write, so in those cases, instead of doing the full USVString normalization, only a symbol check is done (`'' + val`, which uses ES's ToString, versus `String()` which has special provisions for symbols). PR-URL: https://github.com/nodejs/node/pull/11436 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: James M Snell <jasnell@gmail.com>
Internal Modules
The modules in lib/internal are intended for internal use in Node.js core only, and are not accessible with require() from user modules.
These are subject to change at any time. Reliance on these modules outside of core is not supported in any way.