Method calculate

calc/calc.ts:192–196

(expression: string)

  private static isNumber(token: string): boolean {
    return /^-?\d+(\.\d+)?$/.test(token);
  }

  static calculate(expression: string): number {
    const tokens = this.tokenize(expression);
    const postfix = this.infixToPostfix(tokens);
    return this.evaluatePostfix(postfix);
  }
}