facebookarchive/prepack

Implement DaylightSavingTA

Open

#1,014 opened on Sep 27, 2017

View on GitHub
 (0 comments) (0 reactions) (0 assignees)JavaScript (520 forks)batch import
enhancementhelp wantedinterpreter

Repository metrics

Stars
 (14,268 stars)
PR merge metrics
 (No merged PRs in 30d)

Description

As described in http://www.ecma-international.org/ecma-262/7.0/#sec-local-time-zone-adjustment.

Most likely just find a way to get this information from the underlying implementation.

There are no abstract interpreter concerns for this particular task, but in general it must be remembered that when running the abstract interpreter, things like the time zone adjustment must be considered to be abstract, hence any function that ultimately depends on this must return an appropriate abstract value.

While looking at this code it will be helpful if such functions can be annotated with appropriate TODO comments.

Contributor guide

Research direction
Study the ECMA 262 specification for local time zone adjustment, identify how the underlying JavaScript engine provides this information (e.g., Date object methods), and implement the DaylightSavingTA function accordingly. Add TODO comments for abstract interpreter concerns.
Tech stack
javascript
Domain
compilers
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
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
JavaScriptECMAScript specification
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60