1 files changed, 17 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/tanh/shim.js b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/tanh/shim.js
new file mode 100644
index 0000000000..f6e948f2c5
--- /dev/null
+++ b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/tanh/shim.js
@@ -0,0 +1,17 @@
+'use strict';
+
+var exp = Math.exp;
+
+module.exports = function (x) {
+	var a, b;
+	if (isNaN(x)) return NaN;
+	x = Number(x);
+	if (x === 0) return x;
+	if (x === Infinity) return 1;
+	if (x === -Infinity) return -1;
+	a = exp(x);
+	if (a === Infinity) return 1;
+	b = exp(-x);
+	if (b === Infinity) return -1;
+	return (a - b) / (a + b);
+};