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fix the case when toJSON() returns a Buffer #2

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fix the case when toJSON() returns a Buffer #2

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0af96f6
add test for object whose toJSON() returns a Buffer
chatziko Jan 8, 2016
23ee175
fix the case when toJSON() returns Buffer
chatziko Jan 8, 2016
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7 changes: 4 additions & 3 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@ module.exports = hasBinary;

function hasBinary(data) {

function _hasBinary(obj) {
function _hasBinary(obj, afterToJSON) {
if (!obj) return false;

if ( (global.Buffer && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||
Expand All @@ -41,8 +41,9 @@ function hasBinary(data) {
}
} else if (obj && 'object' == typeof obj) {
// see: https://github.com/Automattic/has-binary/pull/4
if (obj.toJSON && 'function' == typeof obj.toJSON) {
obj = obj.toJSON();
// also: toJSON() can return any type. Restart the check, but don't call toJSON twice
if (!afterToJSON && obj.toJSON && 'function' == typeof obj.toJSON) {
return _hasBinary(obj.toJSON(), true);
}

for (var key in obj) {
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5 changes: 5 additions & 0 deletions test.js
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Expand Up @@ -29,6 +29,11 @@ describe('has-binarydata', function(){
assert(hasBinary(ob));
});

it('should work with an object whose toJSON() returns a buffer', function() {
var ob = {a: 'a', b: [], c: 1234, toJSON: function() { return new Buffer('abc') }};
assert(hasBinary(ob));
});

it('should work with null', function() {
assert(!hasBinary(null));
});
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