proposal: countries/states under countries dir

malaysia.ts

import { Country } from './country.interface';
import { State } from './state.interface';

export class Malaysia implements Country {
    constructor(public readonly code = 'MY', public readonly name = 'Malaysia', public readonly states: State[] = [
        new Perlis(),
        new Kedah(),
        new Penang(),
        new Kelantan(),
        new Terengganu(),
        new Pahang(),
        new Perak(),
        new KualaLumpur(),
        new Selangor(),
        new Putrajaya(),
        new NegeriSembilan(),
        new Johor(),
        new Melaka(),
        new Sabah(),
        new Labuan(),
        new Sarawak(),
    ]) { }
}

export class Perlis implements State {
    constructor(public readonly name: string = 'Perlis') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'01000' && postalCode <= +'02800');
    }
}

export class Kedah implements State {
    constructor(public readonly name: string = 'Kedah') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'05000' && postalCode <= +'09810');
    }
}

export class Penang implements State {
    constructor(public readonly name: string = 'Penang') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'10000' && postalCode <= +'14400');
    }
}

export class Kelantan implements State {
    constructor(public readonly name: string = 'Kelantan') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'15000' && postalCode <= +'18500');
    }
}

export class Terengganu implements State {
    constructor(public readonly name: string = 'Terengganu') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'20000' && postalCode <= +'24300');
    }
}

export class Pahang implements State {
    constructor(public readonly name: string = 'Pahang') { }
    hasPostalCode(postalCode: number): boolean {
        return (
            (postalCode >= +'25000' && postalCode <= +'28800') ||
            (postalCode >= +'39000' && postalCode <= +'39200') ||
            postalCode === +'49000' ||
            postalCode === +'69000'
        );
    }
}

export class Perak implements State {
    constructor(public readonly name: string = 'Perak') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'30000' && postalCode <= +'36810');
    }
}

export class Selangor implements State {
    constructor(public readonly name: string = 'Selangor') { }
    hasPostalCode(postalCode: number): boolean {
        return (
            postalCode >= +'40000' && postalCode <= +'48300' ||
            postalCode >= +'63000' && postalCode <= +'68100'
        );
    }
}

export class KualaLumpur implements State {
    constructor(public readonly name: string = 'KualaLumpur') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'50000' && postalCode <= +'60000');
    }
}

export class Putrajaya implements State {
    constructor(public readonly name: string = 'KualaLumpur') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'62000' && postalCode <= +'62988');
    }
}

export class NegeriSembilan implements State {
    constructor(public readonly name: string = 'NegeriSembilan') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'70000' && postalCode <= +'73509');
    }
}

export class Melaka implements State {
    constructor(public readonly name: string = 'Melaka') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'75000' && postalCode <= +'78309');
    }
}

export class Johor implements State {
    constructor(public readonly name: string = 'Johor') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'79000' && postalCode <= +'86900');
    }
}

export class Labuan implements State {
    constructor(public readonly name: string = 'Labuan') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'87000' && postalCode <= +'87033');
    }
}

export class Sabah implements State {
    constructor(public readonly name: string = 'Sabah') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'88000' && postalCode <= +'91309');
    }
}

export class Sarawak implements State {
    constructor(public readonly name: string = 'Sarawak') { }
    hasPostalCode(postalCode: number): boolean {
        return (postalCode >= +'93000' && postalCode <= +'98859');
    }
}