som-exp-sdk1 v1.0.0

et-nd-exp-sdk

This SDK comes bundled with a range of methods that are useful in parsing and evaluating the expressions of the following kind:

• numeric operations
• date validation
• time expressions
• financial expressions
• loop and logical expression
• sentence expression

Table of Contents

1. Getting Started
2. Installation
3. Initialization
4. APIs
   1. Class: EvalSdkCore
   2. Methods
   3. init(host: string, port?: number, basePath?: string): EvalSdkCore
   4. Example
   5. evaluateExpression(expression: string): Promise
   6. Example
5. Release Notes & Breaking Changes
6. License
7. Contributing

Getting Started

Installation

 $ npm install et-nd-exp-sdk

Initialization

Initialize the module before accessing its methods. (Note: host and port values must be valid.)

  // @ts-ignore
  const sdk = require("et-nd-epr-sdk");
  const opts = { 
    host: "localhost", 
    port: 9999, 
    basePath: ""
  }

  const etExprSDK = sdk.init(opts);

APIs

Class: EvalSdkCore

Methods

init(host: string, port: number, basePath: string): Promise<EvalSdkCore>

init() method initializes and returns an instance of the class EvalSdkCore

Example

  // @ts-ignore
  const sdk = require("et-nd-epr-sdk");
  const etExprSDK = sdk.init("localhost", 9999, "");

evaluateExpression(expression: string): Promise<string>

Example

  etExprSDK.evaluateExpression("4==2") // returns false

pmt(interestRate: number, loanTerm: number, loanAmount: number): Promise<string>

This method calculates the repayment amount based on the given loan amount, interest rate, and loan term.

Example

  etExprSDK.pmt(5/100/12, 5 * 12, 100000) // returns 1887

duration(dateExpr: string): Promise<string>

This method calculates the duration lapsed between the start date and end date in years months days pattern.

Example

  etExprSDK.duration("21-11-2022 - 21-11-1960") // returns 62 years, 0 month, 0 day

Release Notes & Breaking Changes

License

Contributing