4 files changed, 36 insertions, 0 deletions
diff --git a/node_modules/es5-ext/math/expm1/implement.js b/node_modules/es5-ext/math/expm1/implement.js
new file mode 100644
index 000000000..8c9d81113
--- /dev/null
+++ b/node_modules/es5-ext/math/expm1/implement.js
@@ -0,0 +1,8 @@
+"use strict";
+
+if (!require("./is-implemented")()) {
+	Object.defineProperty(Math, "expm1", { value: require("./shim"),
+		configurable: true,
+enumerable: false,
+writable: true });
+}
diff --git a/node_modules/es5-ext/math/expm1/index.js b/node_modules/es5-ext/math/expm1/index.js
new file mode 100644
index 000000000..5b5dff6b2
--- /dev/null
+++ b/node_modules/es5-ext/math/expm1/index.js
@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = require("./is-implemented")()
+	? Math.expm1
+	: require("./shim");
diff --git a/node_modules/es5-ext/math/expm1/is-implemented.js b/node_modules/es5-ext/math/expm1/is-implemented.js
new file mode 100644
index 000000000..dfd056e0a
--- /dev/null
+++ b/node_modules/es5-ext/math/expm1/is-implemented.js
@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = function () {
+	var expm1 = Math.expm1;
+	if (typeof expm1 !== "function") return false;
+	return expm1(1).toFixed(15) === "1.718281828459045";
+};
diff --git a/node_modules/es5-ext/math/expm1/shim.js b/node_modules/es5-ext/math/expm1/shim.js
new file mode 100644
index 000000000..ce737b3bc
--- /dev/null
+++ b/node_modules/es5-ext/math/expm1/shim.js
@@ -0,0 +1,16 @@
+// Thanks: https://github.com/monolithed/ECMAScript-6
+
+"use strict";
+
+var exp = Math.exp;
+
+module.exports = function (value) {
+	if (isNaN(value)) return NaN;
+	value = Number(value);
+	if (value === 0) return value;
+	if (value === Infinity) return Infinity;
+	if (value === -Infinity) return -1;
+
+	if (value > -1.0e-6 && value < 1.0e-6) return value + value * value / 2;
+	return exp(value) - 1;
+};