31 lines
743 B
JavaScript
31 lines
743 B
JavaScript
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module.exports = function properlyBoxed(method) {
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// Check node 0.6.21 bug where third parameter is not boxed
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var properlyBoxesNonStrict = true;
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var properlyBoxesStrict = true;
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var threwException = false;
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if (typeof method === 'function') {
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try {
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// eslint-disable-next-line max-params
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method.call('f', function (_, __, O) {
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if (typeof O !== 'object') {
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properlyBoxesNonStrict = false;
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}
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});
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method.call(
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[null],
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function () {
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'use strict';
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properlyBoxesStrict = typeof this === 'string'; // eslint-disable-line no-invalid-this
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},
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'x'
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);
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} catch (e) {
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threwException = true;
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}
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return !threwException && properlyBoxesNonStrict && properlyBoxesStrict;
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}
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return false;
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};
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