Dart: Formatting and Trailing Commas
Trailing commas may sound like a minor aspect of the Dart language, but they have a major impact on the formatting of your code. This article explains deterministic formatting, how trailing commas affect it, why you should use them, and how to add the dart_code_metrics package to enforce them for better formatting. Deterministic Formatting A code formatter or code beautifier is a tool that formats your code. Dart has a tool called dart format. Formatters take raw code (and sometimes configuration) as input and output formatted code. Given some raw semantically identical code, a deterministic formatter always outputs identical text. In other words, if you copy, paste a chunk of code, and put extra whitespaces in the second copy, applying the deterministic formatter will always result in the exact same text. No matter how you format the original code with whitespaces, the formatter will always...
Christian Findlay
Jul 30, 2022
