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Tighten isIndex and isIterateeCall.

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This commit is contained in:
John-David Dalton
2015-01-15 20:07:41 -08:00
committed by jdalton
parent dffad444c3
commit 8a6dab03c4
1 changed files with 4 additions and 3 deletions
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7
lodash.src.js
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@@ -520,12 +520,13 @@
*
* @private
* @param {*} value The value to check.
* @param {number} [length] The upper bounds of a valid index.
* @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
* @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
*/
function isIndex(value, length) {
value = +value;
return value > -1 && value % 1 == 0 && (length == null || value < length);
length = length == null ? MAX_SAFE_INTEGER : length;
return value > -1 && value % 1 == 0 && value < length;
}
/**
@@ -3750,7 +3751,7 @@
var length = object.length,
prereq = isLength(length) && isIndex(index, length);
} else {
prereq = type == 'string';
prereq = type == 'string' && index in value;
}
return prereq && object[index] === value;
}