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util: fix isPrimitive check
Previous check failed for the edge case Object.create(null). This uses the current v8 code for the check.pull/5010/head
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624938d052
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@ -506,7 +506,12 @@ function isFunction(arg) {
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exports.isFunction = isFunction;
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exports.isFunction = isFunction;
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function isPrimitive(arg) {
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function isPrimitive(arg) {
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return !(arg instanceof Object);
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return arg === null ||
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typeof arg === 'boolean' ||
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typeof arg === 'number' ||
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typeof arg === 'string' ||
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typeof arg === 'symbol' || // ES6 symbol
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typeof arg === 'undefined';
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}
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}
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exports.isPrimitive = isPrimitive;
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exports.isPrimitive = isPrimitive;
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