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keep worker field as Worker (type) when cloning opts #49

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keep worker field as Worker (type) when cloning opts #49

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c2de8a0
keep worker field as Worker (type) when cloning opts
Apr 8, 2018
3e43e8e
fix jshint issue
Apr 8, 2018
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18 changes: 18 additions & 0 deletions lib/shared/pouchdb-clone.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,20 @@ function isBinaryObject(object) {
(typeof Blob !== 'undefined' && object instanceof Blob);
}

var funcToString = Function.prototype.toString;
var objectCtorString = funcToString.call(Object);

function isPlainObject(value) {
var proto = Object.getPrototypeOf(value);
/* istanbul ignore if */
if (proto === null) { // not sure when this happens, but I guess it can
return true;
}
var Ctor = proto.constructor;
return (typeof Ctor === 'function' &&
Ctor instanceof Ctor && funcToString.call(Ctor) === objectCtorString);
}

function cloneArrayBuffer(buff) {
if (typeof buff.slice === 'function') {
return buff.slice(0);
Expand Down Expand Up @@ -52,6 +66,10 @@ module.exports = function clone(object) {
return cloneBinaryObject(object);
}

if (!isPlainObject(object)) {
return object; // don't clone objects like Workers
}

newObject = {};
for (i in object) {
if (Object.prototype.hasOwnProperty.call(object, i)) {
Expand Down