josdejong/mathjs

Indicating expression location for error

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#2,318 opened on Sep 19, 2021

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 (15 comments) (0 reactions) (0 assignees)JavaScript (13,832 stars) (1,298 forks)batch import
featurehelp wanted

Description

When evaluating with multiple expressions and one of them has an error:

math.evaluate(["1+1","2+"])

The error is:

SyntaxError: Unexpected end of expression (char 3)

I would like to know which is the expression with the error: SyntaxError: Unexpected end of expression (expr 2, char 3)

Contributor guide

Tech stack
javascriptnodejs
Domain
developer experience
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.
1-3 hours
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
Understanding of JavaScript errorsBasic mathjs usageReading source code for evaluate
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Look into the evaluate function in the mathjs source code to locate where the error is thrown when multiple expressions are given. Modify the error message to include the expression index. Check any existing tests related to error messages.