fix: Support runtimes without ICU (#2331)

Author: ThaUnknown

src/util/utf8.js

@@ -7,7 +7,14 @@
  */
 var utf8 = exports,
     replacementChar = "\ufffd",
+    strictDecoder;
+
+try {
     strictDecoder = new TextDecoder("utf-8", { fatal: true, ignoreBOM: true });
+} catch (err) {
+    // "fatal" option is not supported on Node.js compiled without ICU
+    strictDecoder = new TextDecoder("utf-8", { ignoreBOM: true });
+}
 
 /**
  * Calculates the UTF8 byte length of a string.