mixed + non-empty-literal-string = string

Repository metrics

Stars

5,369 stars (5,369 stars)

PR merge metrics

Avg merge 3d 12h (Avg merge 3d 12h)5 merged PRs in 30d (5 merged PRs in 30d)

Description

Contributor guide

Research direction

Investigate how Psalm handles type inference when mixing 'mixed' and 'non empty literal string' types, especially in addition. Look at the reported test case and trace the type resolver.

Tech stack

php

Domain

tooling

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.

Mostly clear

Prerequisites

PHPPsalm basics

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

40