azu/promises-book

Promise.rejectにErrorオブジェクトを渡す理由

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#287 opened on Jul 15, 2018

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Status: Proposalgood first issue

Description

https://asciidwango.github.io/js-primer/basic/error-try-catch/#error-and-debug と同じようにスタックトレースが理由の一つであることについてを追加する

Contributor guide

Tech stack
javascript
Domain
documentation
Issue type
documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
JavaScript basicsPromise conceptsJapanese reading ability
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80
Research direction
Locate the relevant section in the promises book repository (likely a markdown file) where Promise.reject is discussed. Refer to the linked js primer page (https://asciidwango.github.io/js primer/basic/error try catch/) for the explanation of stack traces. Add a note that passing an Error object to Promise.reject preserves the stack trace, improving debugging.