33 lines
701 B
JavaScript
33 lines
701 B
JavaScript
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'use strict';
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function undefsafe(obj, path) {
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var parts = path.split('.');
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var key = null;
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var type = typeof obj;
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// we're dealing with a primative
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if (type !== 'object' && type !== 'function') {
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return obj;
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} else if (path.trim() === '') {
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return obj;
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}
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while ((key = parts.shift())) {
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obj = obj[key];
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if (obj === undefined || obj === null) {
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break;
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}
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}
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// if we have a null object, make sure it's the one the user was after,
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// if it's not (i.e. parts has a length) then give undefined back.
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if (obj === null && parts.length !== 0) {
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obj = undefined;
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}
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return obj;
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}
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if (typeof module !== 'undefined') {
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module.exports = undefsafe;
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}
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