Fix Node <8 compatibility

Author: Kai Cataldo

index.js

@@ -140,11 +140,8 @@ function plugin(options, Parser) {
         case 125: // '}'
           this.raise(
             this.pos,
-            `Unexpected token \`${
-              this.input[this.pos]
-            }\`. Did you mean \`${ch === 125 ? "}" : ">"}\`, or \`{"${
-              this.input[this.pos]
-            }"}\`?`,
+            "Unexpected token `" + this.input[this.pos] + "`. Did you mean `" +
+              (ch === 62 ? ">" : "}") + "` or " + "`{\"" + this.input[this.pos] + "\"}" + "`?"
           );
 
         default:

test/tests-jsx.js

@@ -3881,11 +3881,11 @@ for (var ns in fbTestFixture) {
   }
 }
 
-testFail("<LeftRight left=<a /> right=<b>monkeys /> gorillas</b> />", 'Unexpected token `>`. Did you mean `&gt;`, or `{">"}`? (1:40)')
+testFail("<LeftRight left=<a /> right=<b>monkeys /> gorillas</b> />", 'Unexpected token `>`. Did you mean `&gt;` or `{">"}`? (1:40)')
 testFail("<A>foo{</A>", "Unexpected token (1:8)")
 testFail("<A>foo<</A>", "Unexpected token (1:7)")
-testFail("<A>foo}</A>", 'Unexpected token `}`. Did you mean `&rbrace;`, or `{"}"}`? (1:6)')
-testFail("<A>foo></A>", 'Unexpected token `>`. Did you mean `&gt;`, or `{">"}`? (1:6)')
+testFail("<A>foo}</A>", 'Unexpected token `}`. Did you mean `&rbrace;` or `{"}"}`? (1:6)')
+testFail("<A>foo></A>", 'Unexpected token `>`. Did you mean `&gt;` or `{">"}`? (1:6)')
 test('<A>foo{"{"}</A>', {
   "type": "Program",
   "start": 0,