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Rich Trott
d7aa8fa088
Update ESLint to 2.1.0. ESLint has a number of potentially-useful new features but this change attempts to be minimal in its changes. However, some things could not be avoided reasonably. ESLint 2.1.0 found a few lint issues that ESLing 1.x missed with template strings that did not take advantage of any features of template strings, and `let` declarations where `const` sufficed. Additionally, ESLint 2.1.0 removes some granularity around enabling ES6 features. Some features (e.g., spread operator) that had been turned off in our configuration for ESLint 1.x are now permitted. PR-URL: https://github.com/nodejs/node/pull/5214 Reviewed-By: Michaël Zasso <mic.besace@gmail.com> Reviewed-By: jbergstroem - Johan Bergström <bugs@bergstroem.nu> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Roman Reiss <me@silverwind.io> Reviewed-By: Myles Borins <myles.borins@gmail.com>
15 lines
403 B
JavaScript
15 lines
403 B
JavaScript
/**
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* Checks if `value` is suitable for use as unique object key.
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*
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* @private
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is suitable, else `false`.
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*/
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function isKeyable(value) {
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var type = typeof value;
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return type == 'number' || type == 'boolean' ||
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(type == 'string' && value !== '__proto__') || value == null;
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}
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module.exports = isKeyable;
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