Revert "support for bigint (#80)"

This reverts commit 5130a71.

Author: okuryu

index.js

@@ -11,7 +11,7 @@ var randomBytes = require('randombytes');
 // Generate an internal UID to make the regexp pattern harder to guess.
 var UID_LENGTH          = 16;
 var UID                 = generateUID();
-var PLACE_HOLDER_REGEXP = new RegExp('(\\\\)?"@__(F|R|D|M|S|U|I|B)-' + UID + '-(\\d+)__@"', 'g');
+var PLACE_HOLDER_REGEXP = new RegExp('(\\\\)?"@__(F|R|D|M|S|U|I)-' + UID + '-(\\d+)__@"', 'g');
 
 var IS_NATIVE_CODE_REGEXP = /\{\s*\[native code\]\s*\}/g;
 var IS_PURE_FUNCTION = /function.*?\(/;
@@ -70,7 +70,6 @@ module.exports = function serialize(obj, options) {
     var sets      = [];
     var undefs    = [];
     var infinities= [];
-    var bigInts = [];
 
     // Returns placeholders for functions and regexps (identified by index)
     // which are later replaced by their string representation.
@@ -120,10 +119,6 @@ module.exports = function serialize(obj, options) {
             return '@__I-' + UID + '-' + (infinities.push(origValue) - 1) + '__@';
         }
 
-        if (type === 'bigint') {
-            return '@__B-' + UID + '-' + (bigInts.push(origValue) - 1) + '__@';
-        }
-
         return value;
     }
 
@@ -197,7 +192,7 @@ module.exports = function serialize(obj, options) {
         str = str.replace(UNSAFE_CHARS_REGEXP, escapeUnsafeChars);
     }
 
-    if (functions.length === 0 && regexps.length === 0 && dates.length === 0 && maps.length === 0 && sets.length === 0 && undefs.length === 0 && infinities.length === 0 && bigInts.length === 0) {
+    if (functions.length === 0 && regexps.length === 0 && dates.length === 0 && maps.length === 0 && sets.length === 0 && undefs.length === 0 && infinities.length === 0) {
         return str;
     }
 
@@ -236,10 +231,6 @@ module.exports = function serialize(obj, options) {
             return infinities[valueIndex];
         }
 
-        if (type === 'B') {
-            return "BigInt(\"" + bigInts[valueIndex] + "\")";
-        }
-
         var fn = functions[valueIndex];
 
         return serializeFunc(fn);

test/unit/serialize.js

@@ -414,24 +414,6 @@ describe('serialize( obj )', function () {
         });
     });
 
-    describe('BigInt', function () {
-        it('should serialize BigInt', function () {
-            var b = BigInt(9999);
-            expect(serialize(b)).to.equal('BigInt("9999")');
-            expect(serialize({t: [b]})).to.be.a('string').equal('{"t":[BigInt("9999")]}');
-        });
-
-        it('should deserialize BigInt', function () {
-            var d = eval(serialize(BigInt(9999)));
-            expect(d).to.be.a('BigInt');
-            expect(d.toString()).to.equal('9999');
-        });
-
-        it('should throw error for invalid bigint', function () {
-            expect(() => serialize(BigInt('abc'))).to.throw(Error);
-        });
-    });
-
     describe('XSS', function () {
         it('should encode unsafe HTML chars to Unicode', function () {
             expect(serialize('</script>')).to.equal('"\\u003C\\u002Fscript\\u003E"');