andreypopp/autobind-decorator

boundMethod decorator might not be usable in Angular production builds

Open

#82 建立於 2018年12月13日

在 GitHub 查看
 (5 留言) (1 反應) (0 負責人)JavaScript (1,446 star) (76 fork)batch import
help wanted

描述

I get this error when running production builds of my Angular app, which contains usages of the boundMethod decorator:

 Error encountered resolving symbol values statically. Only initialized variables and constants can be referenced because the value of this variable is needed by the template compiler (position 3:22 in the original .ts file), resolving symbol boundMethod in C:/Users/Jeff/[path to my app]/node_modules/autobind-decorator/index.d.ts

I believe it is the Angular AoT compiler which is throwing this error. Devleopment builds, which don't use AoT, don't produce these errors.

I import the decorator using import { boundMethod } from "autobind-decorator";

A workaround is to use the autobind decorator instead, though that is discouraged by this package's docs.

貢獻者指南

技術棧
typescriptjavascriptangular
領域
frontend
議題類型
bug
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。
3
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。
1-2 days
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 decoratorsAngular AoT compilationES6 classes
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。
35
研究方向
The error occurs during Angular AOT compilation when using the boundMethod decorator. Investigate the decorator implementation in the package source (likely index.d.ts or boundMethod.ts) to see how it is defined. Angular AOT requires decorators to be statically analyzable. Common workarounds include using a factory function or changing the decorator to use a static property. Also explore the lib folder or the main source to understand the structure. Check if there are any existing PRs or comments addressing this issue (none visible). Consider updating the decorator to be compatible with Angular's AOT compiler by following Angular's guidelines for decorator metadata.