How to delete the text behind each validation error msg?

[durianwaffle]

I find that there is a text, which is grammar name at the end of each validation error msg.
Is there any way to delete it?

[msujew]

Hey @durianwaffle,

you can override the DocumentValidator#getSource method to return an empty string to remove/change the text:

langium/packages/langium/src/validation/document-validator.ts

Lines 197 to 213 in 2e39701

	protected toDiagnostic<N extends AstNode>(severity: ValidationSeverity, message: string, info: DiagnosticInfo<N, string>): Diagnostic {
	return {
	message,
	range: getDiagnosticRange(info),
	severity: toDiagnosticSeverity(severity),
	code: info.code,
	codeDescription: info.codeDescription,
	tags: info.tags,
	relatedInformation: info.relatedInformation,
	data: info.data,
	source: this.getSource()
	};
	}
	protected getSource(): string | undefined {
	return this.metadata.languageId;
	}

[durianwaffle]

Thank you @msujew !