summaryrefslogtreecommitdiff
path: root/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/internal/isLength.js
diff options
context:
space:
mode:
Diffstat (limited to 'tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/internal/isLength.js')
-rw-r--r--tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/internal/isLength.js20
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/internal/isLength.js b/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/internal/isLength.js
new file mode 100644
index 0000000000..1e3f11c10d
--- /dev/null
+++ b/tools/eslint/node_modules/js-yaml/node_modules/argparse/node_modules/lodash/internal/isLength.js
@@ -0,0 +1,20 @@
+/**
+ * Used as the [maximum length](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
+ * of an array-like value.
+ */
+var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
+
+/**
+ * Checks if `value` is a valid array-like length.
+ *
+ * **Note:** This function is based on [`ToLength`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength).
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
+ */
+function isLength(value) {
+ return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
+}
+
+module.exports = isLength;