Closing quicktype's stdout makes it output an error in some cases · glideapps/quicktype#864

(0 评论) (1 反应) (0 负责人)TypeScript (10,867 star) (968 fork)batch import

CLIgood first issue

描述

Marks-iMac:quicktype schani$ ./script/quickesttype --src-lang schema --lang swift --just-types ./test/inputs/schema/vega-lite.schema   | head -n 4
import Foundation

struct VegaLite {
    /// URL to [JSON schema](http://json-schema.org/) for a Vega-Lite specification. Unless you

Issue in line 1390: quicktype cannot infer this type because there is no data about it in the input.
1390:     let on: Any?

Issue in line 1537: quicktype cannot infer this type because there is no data about it in the input.
1537:     let on: Any?

Issue in line 1585: quicktype cannot infer this type because there is no data about it in the input.
1585:     let on: Any?

Issue in line 4583: quicktype cannot infer this type because there is no data about it in the input.
4583:     let on: Any?
events.js:182
      throw er; // Unhandled 'error' event
      ^

Error: write EPIPE
    at exports._errnoException (util.js:1024:11)
    at WriteWrap.afterWrite [as oncomplete] (net.js:851:14)
Marks-iMac:quicktype schani$ ./script/quickesttype --lang swift --just-types ./test/inputs/json/samples/pokedex.json   | head -n 4
import Foundation

struct Pokedex {
    let pokemon: [Pokemon]
Marks-iMac:quicktype schani$ ./script/quickesttype --quiet --src-lang schema --lang swift --just-types ./test/inputs/schema/vega-lite.schema   | head -n 4
import Foundation

struct VegaLite {
    /// URL to [JSON schema](http://json-schema.org/) for a Vega-Lite specification. Unless you
events.js:182
      throw er; // Unhandled 'error' event
      ^

Error: write EPIPE
    at exports._errnoException (util.js:1024:11)
    at WriteWrap.afterWrite [as oncomplete] (net.js:851:14)

贡献者指南

技术栈: typescriptnodejs
领域: clibackenddeveloper experience
议题类型: bug
难度: 3
预计时间: 1-3 hours
活动状态: stale
清晰度: clear
前置要求: Node.js streamsquicktype codebase familiarity
新手友好度: 75
研究方向: The issue occurs when stdout is closed early (e.g., piping to 'head'), causing an unhandled EPIPE error. The fix involves adding an error handler on process.stdout to ignore the EPIPE error. Locate where quicktype writes output, likely in the CLI entry point or output stream module, and attach a listener for 'error' event on process.stdout. Consider using process.stdout.on('error', () => {}) to suppress the error without crashing.