Function maybeParseExpression

src/javascript/parse.ts:78–87

(input: string)

 * additional input follows the expression.
 */
export function maybeParseExpression(input: string): Expression | null {
  const parser = new (Parser as any)(acornOptions, input, 0); // private constructor
  parser.nextToken();
  try {
    const node = parser.parseExpression();
    return parser.type === tokTypes.eof ? node : null;
  } catch {
    return null;
  }
}