Give an error indicating that the triple slash has syntax error

Description

/// <reference patj="file1.ts"/> => a syntax error that triple slash syntax

Contributor guide

Tech stack

typescript

Domain

developer experiencetoolingcli

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.

mostly clear

Prerequisites

TypeScriptCompiler parsingDiagnostics

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

20

Research direction

Investigate how triple slash directives are currently parsed in the TypeScript compiler (likely in parser.ts and scanner.ts). Identify where malformed attributes are not flagged. Then add a new diagnostic for invalid triple slash directives following the existing diagnostic pattern. Consult the issue comments for any additional context or edge cases.