Function isStringObject

src/math-json/utils.ts:36–40

(
  expr: MathJsonExpression | null
)

}

export function isStringObject(
  expr: MathJsonExpression | null
): expr is MathJsonStringObject {
  return expr !== null && typeof expr === 'object' && 'str' in expr;
}

export function isDictionaryObject(
  expr: MathJsonExpression | null