TypeScript constructor public cause duplicate bug

TypeScript constructor public cause duplicate bug

constructor public

const log = console.log;

// constructor public
class TS4x {
  constructor(public version: string, public author: string) {
    this.version = version;
    this.author = author;
    this.init();
  }
  init() {
    log(`init`);
  }
}

var log = console.log;
// constructor public
var TS4x = /** @class */ (function () {
    function TS4x(version, author) {
        this.version = version;
        this.author = author;
        this.version = version;
        this.author = author;
        this.init();
    }
    TS4x.prototype.init = function () {
        log("init");
    };
    return TS4x;
}());

solution

https://github.com/microsoft/TypeScript/issues/41876

const log = console.log;

class TS4x1 {
  constructor(public version: string, public author: string) {
    // auto assignment
    this.init();
  }
  init() {
    log(`init`);
  }
}

var log = console.log;

// constructor public
var TS4x1 = /** @class */ (function () {
    function TS4x1(version, author) {
        this.version = version;
        this.author = author;
        // auto assignment
        this.init();
    }
    TS4x1.prototype.init = function () {
        log("init");
    };
    return TS4x1;
}());

demos

"use strict";

/**
 *
 * @author xgqfrms
 * @license MIT
 * @copyright xgqfrms
 * @created 2020-12-07
 * @modified
 *
 * @description
 * @augments
 * @example
 * @link
 *
 */

const log = console.log;

// constructor public
class TS4x {
  constructor(public version: string, public author: string) {
    this.version = version;
    this.author = author;
    this.init();
  }
  init() {
    log(`init`);
  }
}

// public
class TS4x2 {
  public version: string;
  public author: string;
  constructor(version: string, author: string) {
    this.version = version;
    this.author = author;
    this.init();
  }
  init() {
    log(`init`);
  }
}

// private
class TS4x3 {
  private version: string;
  private author: string;
  constructor(version: string, author: string) {
    this.version = version;
    this.author = author;
    this.init();
  }
  init() {
    log(`init`, this.version);
    log(`init`, this.author);
  }
}

// protected
class TS4x4 {
  protected version: string;
  protected author: string;
  constructor(version: string, author: string) {
    this.version = version;
    this.author = author;
    this.init();
  }
  init() {
    log(`init`, this.version);
    log(`init`, this.author);
  }
}

export default TS4x;

export {
  TS4x,
  TS4x2,
  TS4x3,
  TS4x4,
};

refs

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