1 files changed, 33 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/_unpack-ieee754.js b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/_unpack-ieee754.js
new file mode 100644
index 0000000000..c9f26f2bb6
--- /dev/null
+++ b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/_unpack-ieee754.js
@@ -0,0 +1,33 @@
+// Credit: https://github.com/paulmillr/es6-shim/
+
+'use strict';
+
+var pow = Math.pow;
+
+module.exports = function (bytes, ebits, fbits) {
+	// Bytes to bits
+	var bits = [], i, j, b, str,
+	bias, s, e, f;
+
+	for (i = bytes.length; i; i -= 1) {
+		b = bytes[i - 1];
+		for (j = 8; j; j -= 1) {
+			bits.push(b % 2 ? 1 : 0);
+			b = b >> 1;
+		}
+	}
+	bits.reverse();
+	str = bits.join('');
+
+	// Unpack sign, exponent, fraction
+	bias = (1 << (ebits - 1)) - 1;
+	s = parseInt(str.substring(0, 1), 2) ? -1 : 1;
+	e = parseInt(str.substring(1, 1 + ebits), 2);
+	f = parseInt(str.substring(1 + ebits), 2);
+
+	// Produce number
+	if (e === (1 << ebits) - 1) return f !== 0 ? NaN : s * Infinity;
+	if (e > 0) return s * pow(2, e - bias) * (1 + f / pow(2, fbits));
+	if (f !== 0) return s * pow(2, -(bias - 1)) * (f / pow(2, fbits));
+	return s < 0 ? -0 : 0;
+};