Krzysztof ManszSet save flag for npm installor if we want exact version of package useAug 16, 2017Aug 16, 2017
Krzysztof ManszCompatibility checkerhttp://kangax.github.io/compat-table/es6/Aug 16, 2017Aug 16, 2017
Krzysztof ManszDuplicatesIf in your function there are duplicates in a parameter list- USE STRICT MODE. Without this you could have this output:Aug 10, 2017Aug 10, 2017
Krzysztof ManszDeletingUsing delete keyword is good to remove something from an object but not for deleting variables or objects (you cannot do this). Without…Aug 10, 2017Aug 10, 2017
Krzysztof ManszRead only propertiesFor read only properties use the Object.defineProperty method, set the writable property to false and use strict mode.Aug 10, 2017Aug 10, 2017
Krzysztof ManszHoistingAll var declarations should be at the top of your scope!Aug 8, 2017Aug 8, 2017