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node_modules/es5-ext/math/log2/implement.js

@@ -0,0 +1,10 @@
+"use strict";
+
+if (!require("./is-implemented")()) {
+	Object.defineProperty(Math, "log2", {
+		value: require("./shim"),
+		configurable: true,
+		enumerable: false,
+		writable: true
+	});
+}

node_modules/es5-ext/math/log2/index.js

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+"use strict";
+
+module.exports = require("./is-implemented")() ? Math.log2 : require("./shim");

node_modules/es5-ext/math/log2/is-implemented.js

@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = function () {
+	var log2 = Math.log2;
+	if (typeof log2 !== "function") return false;
+	return log2(3).toFixed(15) === "1.584962500721156";
+};

node_modules/es5-ext/math/log2/shim.js

@@ -0,0 +1,14 @@
+"use strict";
+
+var log = Math.log, LOG2E = Math.LOG2E;
+
+module.exports = function (value) {
+	if (isNaN(value)) return NaN;
+	value = Number(value);
+	if (value < 0) return NaN;
+	if (value === 0) return -Infinity;
+	if (value === 1) return 0;
+	if (value === Infinity) return Infinity;
+
+	return log(value) * LOG2E;
+};