打字稿：映射的鍵：值結構

我使用類，如：打字稿：映射的鍵：值結構

export class Countries { 
    [key: string]: ICountry; 
}

其中ICountry是：

export interface ICountry { 
    name: { 
     wiki?: string, 
     common: string, 
     official: string, 
     native: IStringToOfficialCommon 
    },  
    demonym: string, 
    capital: string, 
    iso_3166_1_alpha2: string, 
    iso_3166_1_alpha3: string, 
    iso_3166_1_numeric: string, 
    currency: any[] | { 
     [key: string]: { 
      iso_4217_code: string, 
      iso_4217_numeric: number | string, 
      iso_4217_name: string, 
      iso_4217_minor_unit: number 
     } 
    }, 
    tld: string[], 
    alt_spellings: string[], 
    languages: IStringToString | any[], 
    translations: IStringToOfficialCommon | any[], 
    geo: { 
     continent: IStringToString, 
     postal_code: boolean, 
     latitude: string, 
     latitude_dec: string, 
     longitude: string, 
     longitude_dec: string, 
     max_latitude: string, 
     max_longitude: string, 
     min_latitude: string, 
     min_longitude: string, 
     area: number, 
     region: string, 
     subregion: string, 
     world_region: string, 
     region_code: string, 
     subregion_code: string, 
     landlocked: boolean, 
     borders: string[], 
     independent: string, 
    }, 
    dialling: { 
     calling_code: string[], 
     national_prefix: string, 
     national_number_lengths: number[], 
     national_destination_code_lengths: number[], 
     international_prefix: string | number 
    }, 
    extra: { 
     geonameid: number, 
     edgar: string | number, 
     itu: string | number, 
     marc: string | number, 
     wmo: string | number, 
     ds: string | number, 
     fifa: string | number, 
     fips: string | number, 
     gaul: number, 
     ioc: string | number, 
     cowc: string | number, 
     cown: number, 
     fao: number, 
     imf: number, 
     ar5: string | number, 
     address_format: string, 
     eu_member: boolean, 
     vat_rates: { 
      standard: number, 
      reduced: number[], 
      super_reduced: number, 
      parking: number 
     } 
    }, 
    population: { 
     count: number, 
     worldPercentage: number 
    }, 
    wikiLink: string, 
    isOutlinesImgExist?: boolean, 
    isCoatOfArmsImgExist?: boolean, 
}

示例數據：

export const CountriesData: Countries = { 
    "AW": { 
    "name": { 
     "common": "Aruba", 
     "official": "Aruba", 
     "native": { 
     "nld": { 
      "official": "Aruba", 
      "common": "Aruba" 
     }, 
     "pap": { 
      "official": "Aruba", 
      "common": "Aruba" 
     } 
     } 
    }, 
    "demonym": "Aruban", 
    "capital": "Oranjestad", 
    "iso_3166_1_alpha2": "AW", 
    "iso_3166_1_alpha3": "ABW", 
    "iso_3166_1_numeric": "533", 
    "currency": { 
     "AWG": { 
     "iso_4217_code": "AWG", 
     "iso_4217_numeric": 533, 
     "iso_4217_name": "Aruban Florin", 
     "iso_4217_minor_unit": 2 
     } 
    }, 
    "tld": [ 
     ".aw" 
    ], 
    "alt_spellings": [ 
     "AW" 
    ], 
    "languages": { 
     "nld": "Dutch", 
     "pap": "Papiamento" 
    }, 
    "translations": { 
     "deu": { 
     "official": "Aruba", 
     "common": "Aruba" 
     }, 
     "fra": { 
     "official": "Aruba", 
     "common": "Aruba" 
     }, 
     "hrv": { 
     "official": "Aruba", 
     "common": "Aruba" 
     }, 
     "ita": { 
     "official": "Aruba", 
     "common": "Aruba" 
     }, 
     "jpn": { 
     "official": "\u30a2\u30eb\u30d0", 
     "common": "\u30a2\u30eb\u30d0" 
     }, 
     "nld": { 
     "official": "Aruba", 
     "common": "Aruba" 
     }, 
     "por": { 
     "official": "Aruba", 
     "common": "Aruba" 
     }, 
     "rus": { 
     "official": "\u0410\u0440\u0443\u0431\u0430", 
     "common": "\u0410\u0440\u0443\u0431\u0430" 
     }, 
     "spa": { 
     "official": "Aruba", 
     "common": "Aruba" 
     }, 
     "fin": { 
     "official": "Aruba", 
     "common": "Aruba" 
     } 
    }, 
    "geo": { 
     "continent": { 
     "NA": "North America" 
     }, 
     "postal_code": false, 
     "latitude": "12 30 N", 
     "latitude_dec": "12.506523132324219", 
     "longitude": "69 58 W", 
     "longitude_dec": "-69.96931457519531", 
     "max_latitude": "12.616667", 
     "max_longitude": "-69.85", 
     "min_latitude": "12.416667", 
     "min_longitude": "-70.066667", 
     "area": 180, 
     "region": "Americas", 
     "subregion": "Caribbean", 
     "world_region": "AMER", 
     "region_code": "019", 
     "subregion_code": "029", 
     "landlocked": false, 
     "borders": [ 

     ], 
     "independent": "Part of NL" 
    }, 
    "dialling": { 
     "calling_code": [ 
     "297" 
     ], 
     "national_prefix": null, 
     "national_number_lengths": [ 
     7 
     ], 
     "national_destination_code_lengths": [ 
     2 
     ], 
     "international_prefix": "00" 
    }, 
    "extra": { 
     "geonameid": 3577279, 
     "edgar": "1C", 
     "itu": "ABW", 
     "marc": "aw", 
     "wmo": "NU", 
     "ds": 0, 
     "fifa": "ARU", 
     "fips": "AA", 
     "gaul": 14, 
     "ioc": "ARU", 
     "cowc": 0, 
     "cown": 0, 
     "fao": 0, 
     "imf": 314, 
     "ar5": "LAM", 
     "address_format": null, 
     "eu_member": null, 
     "vat_rates": null 
    }, 
    "population": { 
     "count": 110108, 
     "worldPercentage": 0.0015 
    }, 
    "wikiLink": "\/wiki\/Aruba" 
    }, 
    "AF": { 
    "name": { 
     "common": "Afghanistan", 
     "official": "Islamic Republic of Afghanistan", 
     "native": { 
     "pus": { 
      "official": "\u062f \u0627\u0641\u063a\u0627\u0646\u0633\u062a\u0627\u0646 \u0627\u0633\u0644\u0627\u0645\u064a \u062c\u0645\u0647\u0648\u0631\u06cc\u062a", 
      "common": "\u0627\u0641\u063a\u0627\u0646\u0633\u062a\u0627\u0646" 
     }, 
     "prs": { 
      "official": "\u062c\u0645\u0647\u0648\u0631\u06cc \u0627\u0633\u0644\u0627\u0645\u06cc \u0627\u0641\u063a\u0627\u0646\u0633\u062a\u0627\u0646", 
      "common": "\u0627\u0641\u063a\u0627\u0646\u0633\u062a\u0627\u0646" 
     }, 
     "tuk": { 
      "official": "Owganystan Yslam Respublikasy", 
      "common": "Owganystan" 
     } 
     } 
    }, 
    "demonym": "Afghan", 
    "capital": "Kabul", 
    "iso_3166_1_alpha2": "AF", 
    ...

所以，我需要將countriesData轉換爲Array<ICustomCountry>，其中ICustomCountry將是：

interface ICustomCountry { 
    name: string; 
    code: string; 
}

所以，ICustomCountry.name從ICountry.name.common映射和ICustomCountry.code從ICountry.iso_3166_1_alpha2映射。

任何想法？

來源

2017-04-04 Jordi

使用Object.keys和Array.prototype.map()

let out = Object.keys(countriesData).map(key=>{ 
    let country= countriesData[key] 
    return {name:country.name.common,code:country.iso_3166_1_alpha2} 
});

來源

2017-04-04 13:54:38 n00dl3

如果我理解你的權利，那麼：

let countries: ICustomCountry[] = Object.keys(CountriesData).map(name => { 
    const country = CountriesData[name]; 

    return { 
     name: country.name.common, 
     code: country.iso_3166_1_alpha2 
    } 
});

另一件事是，Countries應該不是一個類，你不實例化它（不使用new），你只能給它分配一個對象。
它應該是一個接口。

來源

2017-04-04 13:56:10

打字稿：映射的鍵：值結構

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