Microsoft/TypeScript

Support column limit in formatter

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#1,988 建立於 2015年2月9日

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 (7 留言) (0 反應) (0 負責人)TypeScript (48,455 star) (6,726 fork)batch import
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描述

Currently, running the formatter (eg via the compiler API: https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API#pretty-printer-using-the-ls-formatter) produces code which is arbitrarily wide, for statements which are nested, complex, etc.

Our style guide requires a maximum columns, which means the formatter should take a configuration for how wide this is. Line breaks should probably be added at the highest point in the AST on the long line.

貢獻者指南

技術棧
typescript
領域
tooling
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
4
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
over 1 week
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
TypeScript compilerAST understandingformatter codeNode.js environment
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
25
研究方向
Start by examining the formatting code in the TypeScript compiler, specifically in the src/services/formatting/ directory. Understand how the current formatter works by looking at the 'pretty printer' documentation (https://github.com/Microsoft/TypeScript/wiki/Using the Compiler API#pretty printer using the ls formatter). The 7 comments in the issue may provide additional context or rejected approaches. The goal is to add a configuration option for maximum column width and implement line breaking logic at the highest AST node that exceeds the limit.