diff options
Diffstat (limited to 'tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/first-index.js')
-rw-r--r-- | tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/first-index.js | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/first-index.js b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/first-index.js new file mode 100644 index 0000000000..7a9e4c3473 --- /dev/null +++ b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/array/#/first-index.js @@ -0,0 +1,16 @@ +'use strict'; + +var toPosInt = require('../../number/to-pos-integer') + , value = require('../../object/valid-value') + + , hasOwnProperty = Object.prototype.hasOwnProperty; + +module.exports = function () { + var i, l; + if (!(l = toPosInt(value(this).length))) return null; + i = 0; + while (!hasOwnProperty.call(this, i)) { + if (++i === l) return null; + } + return i; +}; |