diff options
Diffstat (limited to 'tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/group.js')
-rw-r--r-- | tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/group.js | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/group.js b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/group.js new file mode 100644 index 0000000000..fbb178c35c --- /dev/null +++ b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/group.js @@ -0,0 +1,23 @@ +// Inspired by Underscore's groupBy: +// http://documentcloud.github.com/underscore/#groupBy + +'use strict'; + +var callable = require('../../object/valid-callable') + , value = require('../../object/valid-value') + + , forEach = Array.prototype.forEach, apply = Function.prototype.apply; + +module.exports = function (cb/*, thisArg*/) { + var r; + + (value(this) && callable(cb)); + + r = {}; + forEach.call(this, function (v) { + var key = apply.call(cb, this, arguments); + if (!r.hasOwnProperty(key)) r[key] = []; + r[key].push(v); + }, arguments[1]); + return r; +}; |