z-pattern-matching/z

does not work with typescript

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#35 opened on Dec 1, 2017

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bughelp wanted

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Description

Strange but when I use some of the snippets with typescript, it always returns the result of the first param. For example

import {matches} from 'z';

const person = { name: 'Maria' }
matches(person)(
  (x = { name: 'John' }) => console.log('John you are not welcome!'),
  (x)                    => console.log(`Hey ${x.name}, you are welcome!`)
)

returns John you are not welcome.

Contributor guide

Research direction
Investigate why the pattern matching with TypeScript always matches the first parameter. Check if default parameter value in destructuring causes the issue, or if TypeScript compilation alters behavior.
Tech stack
javascripttypescript
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaScriptTypeScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65