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Diffstat (limited to 'node_modules/lodash/size.js')
-rw-r--r-- | node_modules/lodash/size.js | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/node_modules/lodash/size.js b/node_modules/lodash/size.js new file mode 100644 index 0000000..3561fc1 --- /dev/null +++ b/node_modules/lodash/size.js @@ -0,0 +1,46 @@ +var baseKeys = require('./_baseKeys'), + getTag = require('./_getTag'), + isArrayLike = require('./isArrayLike'), + isString = require('./isString'), + stringSize = require('./_stringSize'); + +/** `Object#toString` result references. */ +var mapTag = '[object Map]', + setTag = '[object Set]'; + +/** + * Gets the size of `collection` by returning its length for array-like + * values or the number of own enumerable string keyed properties for objects. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object|string} collection The collection to inspect. + * @returns {number} Returns the collection size. + * @example + * + * _.size([1, 2, 3]); + * // => 3 + * + * _.size({ 'a': 1, 'b': 2 }); + * // => 2 + * + * _.size('pebbles'); + * // => 7 + */ +function size(collection) { + if (collection == null) { + return 0; + } + if (isArrayLike(collection)) { + return isString(collection) ? stringSize(collection) : collection.length; + } + var tag = getTag(collection); + if (tag == mapTag || tag == setTag) { + return collection.size; + } + return baseKeys(collection).length; +} + +module.exports = size; |