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node_modules/@parcel/watcher/src/Glob.cc

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+#include "Glob.hh"
+
+#ifdef __wasm32__
+extern "C" bool wasm_regex_match(const char *s, const char *regex);
+#endif
+
+Glob::Glob(std::string raw) {
+  mRaw = raw;
+  mHash = std::hash<std::string>()(raw);
+  #ifndef __wasm32__
+    mRegex = std::regex(raw);
+  #endif
+}
+
+bool Glob::isIgnored(std::string relative_path) const {
+  // Use native JS regex engine for wasm to reduce binary size.
+  #ifdef __wasm32__
+    return wasm_regex_match(relative_path.c_str(), mRaw.c_str());
+  #else
+    return std::regex_match(relative_path, mRegex);
+  #endif
+}