Force unorm shim when String.prototype.normalize is broken (ethers-io#338).

Author: ricmoo

dist/shims.js

@@ -152,7 +152,9 @@ function taskBundle(name, options) {
         if (options.minify) {
             result = result.pipe(buffer())
             .pipe(sourcemaps.init({ loadMaps: true }))
-            .pipe(uglify())
+            .pipe(uglify({
+                output: { ascii_only: true }
+            }))
             .pipe(sourcemaps.write('./'))
         }
 
@@ -190,7 +192,9 @@ gulp.task('shims', function () {
         .bundle()
         .pipe(source('shims.js'))
         .pipe(buffer())
-        .pipe(uglify())
+        .pipe(uglify({
+            output: { ascii_only: true }
+        }))
         .pipe(gulp.dest('dist'));
 
         return result;
@@ -287,7 +291,9 @@ function taskLang(locale) {
         .bundle()
         .pipe(source("wordlist-" + locale + ".js"))
         .pipe(buffer())
-        .pipe(uglify())
+        .pipe(uglify({
+            output: { ascii_only: true }
+        }))
         .pipe(gulp.dest("dist"));
     });
 }

gulpfile.js

@@ -1,7 +1,20 @@
 'use strict';
 
 // Shim String.prototype.normalize
-var unorm = require('./unorm.js');
+try {
+    // Some platforms have a native normalize, but it is broken; so we force our shim
+    if (String.fromCharCode(0xe9).normalize('NFD') !== String.fromCharCode(0x65, 0x0301)) {
+        throw new Error('bad normalize');
+    }
+} catch (error) {
+    var unorm = require('./unorm.js');
+    console.log("Broken String.prototype.normalize... Forcing shim.");
+    String.prototype.normalize = function(form) {
+        var func = unorm[(form || 'NFC').toLowerCase()];
+        if (!func) { throw new RangeError('invalid form - ' + form); }
+        return func(this);
+    }
+}
 
 // Shim atob and btoa
 var base64 = require('./base64.js');