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Diffstat (limited to 'node_modules/lodash/isSafeInteger.js')
-rw-r--r-- | node_modules/lodash/isSafeInteger.js | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/node_modules/lodash/isSafeInteger.js b/node_modules/lodash/isSafeInteger.js new file mode 100644 index 0000000..2a48526 --- /dev/null +++ b/node_modules/lodash/isSafeInteger.js @@ -0,0 +1,37 @@ +var isInteger = require('./isInteger'); + +/** Used as references for various `Number` constants. */ +var MAX_SAFE_INTEGER = 9007199254740991; + +/** + * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754 + * double precision number which isn't the result of a rounded unsafe integer. + * + * **Note:** This method is based on + * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`. + * @example + * + * _.isSafeInteger(3); + * // => true + * + * _.isSafeInteger(Number.MIN_VALUE); + * // => false + * + * _.isSafeInteger(Infinity); + * // => false + * + * _.isSafeInteger('3'); + * // => false + */ +function isSafeInteger(value) { + return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER; +} + +module.exports = isSafeInteger; |