diff options
Diffstat (limited to 'tools/node_modules/eslint/node_modules/fast-deep-equal/index.js')
-rw-r--r-- | tools/node_modules/eslint/node_modules/fast-deep-equal/index.js | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/node_modules/fast-deep-equal/index.js b/tools/node_modules/eslint/node_modules/fast-deep-equal/index.js new file mode 100644 index 0000000000..a29572d71d --- /dev/null +++ b/tools/node_modules/eslint/node_modules/fast-deep-equal/index.js @@ -0,0 +1,43 @@ +'use strict'; + +module.exports = function equal(a, b) { + if (a === b) return true; + + var arrA = Array.isArray(a) + , arrB = Array.isArray(b) + , i; + + if (arrA && arrB) { + if (a.length != b.length) return false; + for (i = 0; i < a.length; i++) + if (!equal(a[i], b[i])) return false; + return true; + } + + if (arrA != arrB) return false; + + if (a && b && typeof a === 'object' && typeof b === 'object') { + var keys = Object.keys(a); + if (keys.length !== Object.keys(b).length) return false; + + var dateA = a instanceof Date + , dateB = b instanceof Date; + if (dateA && dateB) return a.getTime() == b.getTime(); + if (dateA != dateB) return false; + + var regexpA = a instanceof RegExp + , regexpB = b instanceof RegExp; + if (regexpA && regexpB) return a.toString() == b.toString(); + if (regexpA != regexpB) return false; + + for (i = 0; i < keys.length; i++) + if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false; + + for (i = 0; i < keys.length; i++) + if(!equal(a[keys[i]], b[keys[i]])) return false; + + return true; + } + + return false; +}; |