Function lookupOrIssueError

test/fixtures/snapshot/typescript.js:48993–49005

(location, message, arg0, arg1, arg2, arg3)

            return emitResolver;
        }
        function lookupOrIssueError(location, message, arg0, arg1, arg2, arg3) {
            var diagnostic = location
                ? ts.createDiagnosticForNode(location, message, arg0, arg1, arg2, arg3)
                : ts.createCompilerDiagnostic(message, arg0, arg1, arg2, arg3);
            var existing = diagnostics.lookup(diagnostic);
            if (existing) {
                return existing;
            }
            else {
                diagnostics.add(diagnostic);
                return diagnostic;
            }
        }
        function errorSkippedOn(key, location, message, arg0, arg1, arg2, arg3) {
            var diagnostic = error(location, message, arg0, arg1, arg2, arg3);
            diagnostic.skippedOn = key;