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Diffstat (limited to 'tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js')
-rw-r--r--tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js14
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js
new file mode 100644
index 0000000000..cd80994a72
--- /dev/null
+++ b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js
@@ -0,0 +1,14 @@
+'use strict';
+
+var log = Math.log, LOG2E = Math.LOG2E;
+
+module.exports = function (x) {
+ if (isNaN(x)) return NaN;
+ x = Number(x);
+ if (x < 0) return NaN;
+ if (x === 0) return -Infinity;
+ if (x === 1) return 0;
+ if (x === Infinity) return Infinity;
+
+ return log(x) * LOG2E;
+};